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Interface</span></a></li><li class="level-2"><a class="final" 
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class="level-2"><a class="final" href="/deploy/enginevariants/"><span>Deploying 
Multiple Engine Variants</span></a></li></ul></li><li class="level-1"><a 
class="expandible" href="#"><span>Customizing an Engine</span></a><ul><li 
class="level-2"><a class="final" href="/customize/"><span>Learning 
DASE</span></a></li><li class="level-2"><a class="final" 
href="/customize/dase/"><span>Implement DASE</span></a></li><li 
class="level-2"><a class="final" 
href="/customize/troubleshooting/"><span>Troubleshooting Engine 
Development</span></a></li><li class="level-2"><a class="final" 
href="/api/current/#package"><span>Engine Scala 
APIs</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>Collecting and Analyzing Data</span></a
 ><ul><li class="level-2"><a class="final" href="/datacollection/"><span>Event 
 >Server Overview</span></a></li><li class="level-2"><a class="final" 
 >href="/cli/#event-server-commands"><span>Event Server Command-line 
 >Interface</span></a></li><li class="level-2"><a class="final" 
 >href="/datacollection/eventapi/"><span>Collecting Data with 
 >REST/SDKs</span></a></li><li class="level-2"><a class="final" 
 >href="/datacollection/eventmodel/"><span>Events Modeling</span></a></li><li 
 >class="level-2"><a class="final" 
 >href="/datacollection/webhooks/"><span>Unifying Multichannel Data with 
 >Webhooks</span></a></li><li class="level-2"><a class="final" 
 >href="/datacollection/channel/"><span>Channel</span></a></li><li 
 >class="level-2"><a class="final" 
 >href="/datacollection/batchimport/"><span>Importing Data in 
 >Batch</span></a></li><li class="level-2"><a class="final" 
 >href="/datacollection/analytics/"><span>Using Analytics 
 >Tools</span></a></li></ul></li><li class="level-1"><a class="expandible" 
 >href="#"><span
 >Choosing an Algorithm(s)</span></a><ul><li class="level-2"><a class="final" 
 >href="/algorithm/"><span>Built-in Algorithm Libraries</span></a></li><li 
 >class="level-2"><a class="final" href="/algorithm/switch/"><span>Switching to 
 >Another Algorithm</span></a></li><li class="level-2"><a class="final" 
 >href="/algorithm/multiple/"><span>Combining Multiple 
 >Algorithms</span></a></li><li class="level-2"><a class="final" 
 >href="/algorithm/custom/"><span>Adding Your Own 
 >Algorithms</span></a></li></ul></li><li class="level-1"><a class="expandible" 
 >href="#"><span>ML Tuning and Evaluation</span></a><ul><li class="level-2"><a 
 >class="final" href="/evaluation/"><span>Overview</span></a></li><li 
 >class="level-2"><a class="final" 
 >href="/evaluation/paramtuning/"><span>Hyperparameter 
 >Tuning</span></a></li><li class="level-2"><a class="final" 
 >href="/evaluation/evaluationdashboard/"><span>Evaluation 
 >Dashboard</span></a></li><li class="level-2"><a class="final" 
 >href="/evaluation/metricchoose/"><span>Choosing 
 Evaluation Metrics</span></a></li><li class="level-2"><a class="final" 
href="/evaluation/metricbuild/"><span>Building Evaluation 
Metrics</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>System Architecture</span></a><ul><li class="level-2"><a 
class="final" href="/system/"><span>Architecture Overview</span></a></li><li 
class="level-2"><a class="final" href="/system/anotherdatastore/"><span>Using 
Another Data Store</span></a></li></ul></li><li class="level-1"><a 
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href="http://templates.prediction.io";><span>Browse</span></a></li><li 
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href="/community/submit-template/"><span>Submit your Engine as a 
Template</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>Demo Tutorials</span></a><ul><li class="level-2"><a 
class="final" href="/demo/tapster/"><span>Comics Recommendation Demo</span></a>
 </li><li class="level-2"><a class="final" 
href="/demo/community/"><span>Community Contributed Demo</span></a></li><li 
class="level-2"><a class="final" href="/demo/textclassification/"><span>Text 
Classification Engine Tutorial</span></a></li></ul></li><li class="level-1"><a 
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class="level-2"><a class="final" 
href="/community/contribute-code/"><span>Contribute Code</span></a></li><li 
class="level-2"><a class="final active" 
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class="level-2"><a class="final" 
href="/community/contribute-webhook/"><span>Contribute a 
Webhook</span></a></li><li class="level-2"><a class="final" 
href="/community/projects/"><span>Community 
Projects</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>Getting
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href="#"><span>Resources</span></a><ul><li class="level-2"><a class="final" 
href="/resources/intellij/"><span>Developing Engines with IntelliJ 
IDEA</span></a></li><li class="level-2"><a class="final" 
href="/resources/upgrade/"><span>Upgrade Instructions</span></a></li><li 
class="level-2"><a class="final" 
href="/resources/glossary/"><span>Glossary</span></a></li></ul></li></ul></nav></div><div
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hidden-lg"><div id="breadcrumbs" class="hidden-sm hidden xs"><ul><li><a 
href="/community/">Getting Involved</a><span 
class="spacer">&gt;</span></li><li><span class="last">Co
 ntribute Documentation</span></li></ul></div><div 
id="page-title"><h1>Contribute Documentation</h1></div></div><div 
id="table-of-content-wrapper"><h5>On this page</h5><aside 
id="table-of-contents"><ul> <li> <a href="#how-to-write-documentation">How to 
Write Documentation</a> </li> <li> <a href="#branching">Branching</a> </li> 
<li> <a href="#installing-locally">Installing Locally</a> </li> <li> <a 
href="#starting-the-server">Starting the Server</a> </li> <li> <a 
href="#building-the-site">Building the Site</a> </li> <li> <a 
href="#styleguide">Styleguide</a> </li> <li> <a 
href="#important-files">Important Files</a> </li> <li> <a 
href="#going-live">Going Live</a> </li> <li> <a 
href="#checking-the-site">Checking the Site</a> </li> <li> <a 
href="#license">License</a> </li> </ul> </aside><hr/><a id="edit-page-link" 
href="https://github.com/apache/incubator-predictionio/tree/livedoc/docs/manual/source/community/contribute-documentation.html.md";><img
 src="/images/icons/edit-pencil-d6c1bb3d.p
 ng"/>Edit this page</a></div><div class="content-header hidden-sm 
hidden-xs"><div id="breadcrumbs" class="hidden-sm hidden xs"><ul><li><a 
href="/community/">Getting Involved</a><span 
class="spacer">&gt;</span></li><li><span class="last">Contribute 
Documentation</span></li></ul></div><div id="page-title"><h1>Contribute 
Documentation</h1></div></div><div class="content"><h2 
id='how-to-write-documentation' class='header-anchors'>How to Write 
Documentation</h2><p>You can help improve the Apache PredictionIO (incubating) 
documentation by submitting tutorials, writing how-tos, fixing errors, and 
adding missing information. You can edit any page live on <a 
href="https://github.com/apache/incubator-predictionio";>GitHub</a> by clicking 
the pencil icon on any page or open a <a 
href="https://help.github.com/articles/creating-a-pull-request/";>Pull 
Request</a>.</p><h2 id='branching' class='header-anchors'>Branching</h2><p>Use 
the <code>livedoc</code> branch if you want to update the current docu
 mentation.</p><p>Use the <code>develop</code> branch if you want to write 
documentation for the next release.</p><h2 id='installing-locally' 
class='header-anchors'>Installing Locally</h2><p>Apache PredictionIO 
(incubating) documentation uses <a 
href="http://middlemanapp.com/";>Middleman</a> and is hosted on Apache.</p><p><a 
href="http://rubygems.org/";>Gems</a> are managed with <a 
href="http://bundler.io/";>Bundler</a>. Front end code with <a 
href="http://bower.io/";>Bower</a>.</p><p>Requires <a 
href="https://www.ruby-lang.org/en/";>Ruby</a> 2.1 or greater. We recommend <a 
href="http://rvm.io/";>RVM</a> or <a 
href="https://github.com/sstephenson/rbenv";>rbenv</a>.</p><div 
class="alert-message warning"><p><strong>OS X</strong> users you will need to 
install <a href="https://developer.apple.com/xcode/downloads/";>Xcode Command 
Line Tools</a> with: <code>$ xcode-select --install</code> 
first.</p></div><p>You can install everything with the following 
commands:</p><div class="highlight shell"><t
 able style="border-spacing: 0"><tbody><tr><td class="gutter gl" 
style="text-align: right"><pre class="lineno">1
+<!DOCTYPE html><html><head><title>Contribute Documentation</title><meta 
charset="utf-8"/><meta content="IE=edge,chrome=1" 
http-equiv="X-UA-Compatible"/><meta name="viewport" 
content="width=device-width, initial-scale=1.0"/><meta class="swiftype" 
name="title" data-type="string" content="Contribute Documentation"/><link 
rel="canonical" 
href="https://docs.prediction.io/community/contribute-documentation/"/><link 
href="/images/favicon/normal-b330020a.png" rel="shortcut icon"/><link 
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true });}catch(e){}</script></head><body><div id="global"><header><div 
class="container" id="header-wrapper"><div class="row"><div 
class="col-sm-12"><div id="logo-wrapper"><span id="drawer-toggle"></span><a 
href="#"></a><a href="http://predictionio.incubator.apache.org/";><img 
alt="PredictionIO" id="logo" 
src="/images/logos/logo-ee2b9bb3.png"/></a></div><div id="menu-wrapper"><div 
id="pill-wrapper"><a class="pill left" 
href="//templates.prediction.io/">TEMPLATES</a> <a class="pill right" 
href="//github.com/apache/incubator-predictionio/">OPEN 
SOURCE</a></div></div><img class="mobile-search-bar-toggler hidden-md 
hidden-lg" 
src="/images/icons/search-glass-704bd4ff.png"/></div></div></div></header><div 
id="search-bar-row-wrapper"><div class="container-fluid" 
id="search-bar-row"><div class="row"><div class="col-md-9 col-sm-11 col-xs-11"
 ><div class="hidden-md hidden-lg" 
 >id="mobile-page-heading-wrapper"><p>PredictionIO Docs</p><h4>Contribute 
 >Documentation</h4></div><h4 class="hidden-sm hidden-xs">PredictionIO 
 >Docs</h4></div><div class="col-md-3 col-sm-1 col-xs-1 hidden-md 
 >hidden-lg"><img id="left-menu-indicator" 
 >src="/images/icons/down-arrow-dfe9f7fe.png"/></div><div class="col-md-3 
 >col-sm-12 col-xs-12 swiftype-wrapper"><div class="swiftype"><form 
 >class="search-form"><img class="search-box-toggler hidden-xs hidden-sm" 
 >src="/images/icons/search-glass-704bd4ff.png"/><div class="search-box"><img 
 >src="/images/icons/search-glass-704bd4ff.png"/><input type="text" 
 >id="st-search-input" class="st-search-input" placeholder="Search 
 >Doc..."/></div><img class="swiftype-row-hider hidden-md hidden-lg" 
 >src="/images/icons/drawer-toggle-active-fcbef12a.png"/></form></div></div><div
 > class="mobile-left-menu-toggler hidden-md 
 >hidden-lg"></div></div></div></div><div id="page" 
 >class="container-fluid"><div class="row"><div id="left-menu-wr
 apper" class="col-md-3"><nav id="nav-main"><ul><li class="level-1"><a 
class="expandible" href="/"><span>Apache PredictionIO (incubating) 
Documentation</span></a><ul><li class="level-2"><a class="final" 
href="/"><span>Welcome to Apache PredictionIO 
(incubating)</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>Getting Started</span></a><ul><li class="level-2"><a 
class="final" href="/start/"><span>A Quick Intro</span></a></li><li 
class="level-2"><a class="final" href="/install/"><span>Installing Apache 
PredictionIO (incubating)</span></a></li><li class="level-2"><a class="final" 
href="/start/download/"><span>Downloading an Engine Template</span></a></li><li 
class="level-2"><a class="final" href="/start/deploy/"><span>Deploying Your 
First Engine</span></a></li><li class="level-2"><a class="final" 
href="/start/customize/"><span>Customizing the 
Engine</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>Integrating with Your Ap
 p</span></a><ul><li class="level-2"><a class="final" 
href="/appintegration/"><span>App Integration Overview</span></a></li><li 
class="level-2"><a class="expandible" href="/sdk/"><span>List of 
SDKs</span></a><ul><li class="level-3"><a class="final" 
href="/sdk/java/"><span>Java & Android SDK</span></a></li><li 
class="level-3"><a class="final" href="/sdk/php/"><span>PHP 
SDK</span></a></li><li class="level-3"><a class="final" 
href="/sdk/python/"><span>Python SDK</span></a></li><li class="level-3"><a 
class="final" href="/sdk/ruby/"><span>Ruby SDK</span></a></li><li 
class="level-3"><a class="final" href="/sdk/community/"><span>Community Powered 
SDKs</span></a></li></ul></li></ul></li><li class="level-1"><a 
class="expandible" href="#"><span>Deploying an Engine</span></a><ul><li 
class="level-2"><a class="final" href="/deploy/"><span>Deploying as a Web 
Service</span></a></li><li class="level-2"><a class="final" 
href="/cli/#engine-commands"><span>Engine Command-line 
Interface</span></a></li><
 li class="level-2"><a class="final" 
href="/deploy/monitoring/"><span>Monitoring Engine</span></a></li><li 
class="level-2"><a class="final" href="/deploy/engineparams/"><span>Setting 
Engine Parameters</span></a></li><li class="level-2"><a class="final" 
href="/deploy/enginevariants/"><span>Deploying Multiple Engine 
Variants</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>Customizing an Engine</span></a><ul><li class="level-2"><a 
class="final" href="/customize/"><span>Learning DASE</span></a></li><li 
class="level-2"><a class="final" href="/customize/dase/"><span>Implement 
DASE</span></a></li><li class="level-2"><a class="final" 
href="/customize/troubleshooting/"><span>Troubleshooting Engine 
Development</span></a></li><li class="level-2"><a class="final" 
href="/api/current/#package"><span>Engine Scala 
APIs</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>Collecting and Analyzing Data</span></a><ul><li 
class="level-2"><a 
 class="final" href="/datacollection/"><span>Event Server 
Overview</span></a></li><li class="level-2"><a class="final" 
href="/cli/#event-server-commands"><span>Event Server Command-line 
Interface</span></a></li><li class="level-2"><a class="final" 
href="/datacollection/eventapi/"><span>Collecting Data with 
REST/SDKs</span></a></li><li class="level-2"><a class="final" 
href="/datacollection/eventmodel/"><span>Events Modeling</span></a></li><li 
class="level-2"><a class="final" 
href="/datacollection/webhooks/"><span>Unifying Multichannel Data with 
Webhooks</span></a></li><li class="level-2"><a class="final" 
href="/datacollection/channel/"><span>Channel</span></a></li><li 
class="level-2"><a class="final" 
href="/datacollection/batchimport/"><span>Importing Data in 
Batch</span></a></li><li class="level-2"><a class="final" 
href="/datacollection/analytics/"><span>Using Analytics 
Tools</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>Choosing an Algorithm(s)</s
 pan></a><ul><li class="level-2"><a class="final" 
href="/algorithm/"><span>Built-in Algorithm Libraries</span></a></li><li 
class="level-2"><a class="final" href="/algorithm/switch/"><span>Switching to 
Another Algorithm</span></a></li><li class="level-2"><a class="final" 
href="/algorithm/multiple/"><span>Combining Multiple 
Algorithms</span></a></li><li class="level-2"><a class="final" 
href="/algorithm/custom/"><span>Adding Your Own 
Algorithms</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>ML Tuning and Evaluation</span></a><ul><li class="level-2"><a 
class="final" href="/evaluation/"><span>Overview</span></a></li><li 
class="level-2"><a class="final" 
href="/evaluation/paramtuning/"><span>Hyperparameter Tuning</span></a></li><li 
class="level-2"><a class="final" 
href="/evaluation/evaluationdashboard/"><span>Evaluation 
Dashboard</span></a></li><li class="level-2"><a class="final" 
href="/evaluation/metricchoose/"><span>Choosing Evaluation Metrics</span></a
 ></li><li class="level-2"><a class="final" 
 >href="/evaluation/metricbuild/"><span>Building Evaluation 
 >Metrics</span></a></li></ul></li><li class="level-1"><a class="expandible" 
 >href="#"><span>System Architecture</span></a><ul><li class="level-2"><a 
 >class="final" href="/system/"><span>Architecture Overview</span></a></li><li 
 >class="level-2"><a class="final" href="/system/anotherdatastore/"><span>Using 
 >Another Data Store</span></a></li></ul></li><li class="level-1"><a 
 >class="expandible" href="#"><span>Engine Template Gallery</span></a><ul><li 
 >class="level-2"><a class="final" 
 >href="http://templates.prediction.io";><span>Browse</span></a></li><li 
 >class="level-2"><a class="final" 
 >href="/community/submit-template/"><span>Submit your Engine as a 
 >Template</span></a></li></ul></li><li class="level-1"><a class="expandible" 
 >href="#"><span>Demo Tutorials</span></a><ul><li class="level-2"><a 
 >class="final" href="/demo/tapster/"><span>Comics Recommendation 
 >Demo</span></a></li><li class="level-2"><a 
 class="final" href="/demo/community/"><span>Community Contributed 
Demo</span></a></li><li class="level-2"><a class="final" 
href="/demo/textclassification/"><span>Text Classification Engine 
Tutorial</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="/community/"><span>Getting Involved</span></a><ul><li class="level-2"><a 
class="final" href="/community/contribute-code/"><span>Contribute 
Code</span></a></li><li class="level-2"><a class="final active" 
href="/community/contribute-documentation/"><span>Contribute 
Documentation</span></a></li><li class="level-2"><a class="final" 
href="/community/contribute-sdk/"><span>Contribute a SDK</span></a></li><li 
class="level-2"><a class="final" 
href="/community/contribute-webhook/"><span>Contribute a 
Webhook</span></a></li><li class="level-2"><a class="final" 
href="/community/projects/"><span>Community 
Projects</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>Getting Help</span></a><ul><li clas
 s="level-2"><a class="final" 
href="/resources/faq/"><span>FAQs</span></a></li><li class="level-2"><a 
class="final" href="/support/"><span>Support</span></a></li></ul></li><li 
class="level-1"><a class="expandible" 
href="#"><span>Resources</span></a><ul><li class="level-2"><a class="final" 
href="/resources/intellij/"><span>Developing Engines with IntelliJ 
IDEA</span></a></li><li class="level-2"><a class="final" 
href="/resources/upgrade/"><span>Upgrade Instructions</span></a></li><li 
class="level-2"><a class="final" 
href="/resources/glossary/"><span>Glossary</span></a></li></ul></li></ul></nav></div><div
 class="col-md-9 col-sm-12"><div class="content-header hidden-md 
hidden-lg"><div id="breadcrumbs" class="hidden-sm hidden xs"><ul><li><a 
href="/community/">Getting Involved</a><span 
class="spacer">&gt;</span></li><li><span class="last">Contribute 
Documentation</span></li></ul></div><div id="page-title"><h1>Contribute 
Documentation</h1></div></div><div id="table-of-content-wrapper"><h5>O
 n this page</h5><aside id="table-of-contents"><ul> <li> <a 
href="#how-to-write-documentation">How to Write Documentation</a> </li> <li> <a 
href="#branching">Branching</a> </li> <li> <a 
href="#installing-locally">Installing Locally</a> </li> <li> <a 
href="#starting-the-server">Starting the Server</a> </li> <li> <a 
href="#building-the-site">Building the Site</a> </li> <li> <a 
href="#styleguide">Styleguide</a> </li> <li> <a 
href="#important-files">Important Files</a> </li> <li> <a 
href="#going-live">Going Live</a> </li> <li> <a 
href="#checking-the-site">Checking the Site</a> </li> <li> <a 
href="#license">License</a> </li> </ul> </aside><hr/><a id="edit-page-link" 
href="https://github.com/apache/incubator-predictionio/tree/livedoc/docs/manual/source/community/contribute-documentation.html.md";><img
 src="/images/icons/edit-pencil-d6c1bb3d.png"/>Edit this page</a></div><div 
class="content-header hidden-sm hidden-xs"><div id="breadcrumbs" 
class="hidden-sm hidden xs"><ul><li><a href="/commun
 ity/">Getting Involved</a><span class="spacer">&gt;</span></li><li><span 
class="last">Contribute Documentation</span></li></ul></div><div 
id="page-title"><h1>Contribute Documentation</h1></div></div><div 
class="content"><h2 id='how-to-write-documentation' class='header-anchors'>How 
to Write Documentation</h2><p>You can help improve the Apache PredictionIO 
(incubating) documentation by submitting tutorials, writing how-tos, fixing 
errors, and adding missing information. You can edit any page live on <a 
href="https://github.com/apache/incubator-predictionio";>GitHub</a> by clicking 
the pencil icon on any page or open a <a 
href="https://help.github.com/articles/creating-a-pull-request/";>Pull 
Request</a>.</p><h2 id='branching' class='header-anchors'>Branching</h2><p>Use 
the <code>livedoc</code> branch if you want to update the current 
documentation.</p><p>Use the <code>develop</code> branch if you want to write 
documentation for the next release.</p><h2 id='installing-locally' class='hea
 der-anchors'>Installing Locally</h2><p>Apache PredictionIO (incubating) 
documentation uses <a href="http://middlemanapp.com/";>Middleman</a> and is 
hosted on Apache.</p><p><a href="http://rubygems.org/";>Gems</a> are managed 
with <a href="http://bundler.io/";>Bundler</a>. Front end code with <a 
href="http://bower.io/";>Bower</a>.</p><p>Requires <a 
href="https://www.ruby-lang.org/en/";>Ruby</a> 2.1 or greater. We recommend <a 
href="http://rvm.io/";>RVM</a> or <a 
href="https://github.com/sstephenson/rbenv";>rbenv</a>.</p><div 
class="alert-message warning"><p><strong>OS X</strong> users you will need to 
install <a href="https://developer.apple.com/xcode/downloads/";>Xcode Command 
Line Tools</a> with: <code>$ xcode-select --install</code> 
first.</p></div><p>You can install everything with the following 
commands:</p><div class="highlight shell"><table style="border-spacing: 
0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre 
class="lineno">1
 2
 3</pre></td><td class="code"><pre><span class="gp">$ </span><span 
class="nb">cd </span>docs/manual
 <span class="gp">$ </span>gem install bundler

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@@ -1,4 +1,4 @@
-<!DOCTYPE html><html><head><title>Contribute a SDK</title><meta 
charset="utf-8"/><meta content="IE=edge,chrome=1" 
http-equiv="X-UA-Compatible"/><meta name="viewport" 
content="width=device-width, initial-scale=1.0"/><meta class="swiftype" 
name="title" data-type="string" content="Contribute a SDK"/><link 
rel="canonical" 
href="https://docs.prediction.io/community/contribute-sdk/"/><link 
href="/images/favicon/normal-b330020a.png" rel="shortcut icon"/><link 
href="/images/favicon/apple-c0febcf2.png" rel="apple-touch-icon"/><link 
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src="//cdnjs.cloudflare.com/ajax/libs/html5shiv/3.7.2/html5shiv.min.js"></script><script
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src="//use.typekit.net/pqo0itb.js"></script><script>try{Typekit.load({ async: 
true });}catch(e){}</script></head><body><div id="global"><header><div 
class="container" id="header-wrapper"><div class="row"><div 
class="col-sm-12"><div id="logo-wrapper"><span id="drawer-toggle"></span><a 
href="#"></a><a href="http://predictionio.incubator.apache.org/";><img 
alt="PredictionIO" id="logo" 
src="/images/logos/logo-ee2b9bb3.png"/></a></div><div id="menu-wrapper"><div 
id="header-nav-options-wrapper"><ul><li><a href="/">Install & Doc</a></li> 
<li><a href="/support">Support</a></li> </ul></div><div id="pill-wrapper"><a 
class="pill left" href="//templates.prediction.io/">TEMPLATES</a> <a 
class="pill right" href="//github.com/apache/incubator-predictionio/">OPEN 
SOURCE</a></div></div><img class="mobile-search-bar-toggler hidden-md 
hidden-lg" 
src="/images/icons/search-glass-704bd4ff.png"/></div></div></div></header><div 
id="search-bar-row-wrapper"><d
 iv class="container-fluid" id="search-bar-row"><div class="row"><div 
class="col-md-9 col-sm-11 col-xs-11"><div class="hidden-md hidden-lg" 
id="mobile-page-heading-wrapper"><p>PredictionIO Docs</p><h4>Contribute a 
SDK</h4></div><h4 class="hidden-sm hidden-xs">PredictionIO Docs</h4></div><div 
class="col-md-3 col-sm-1 col-xs-1 hidden-md hidden-lg"><img 
id="left-menu-indicator" 
src="/images/icons/down-arrow-dfe9f7fe.png"/></div><div class="col-md-3 
col-sm-12 col-xs-12 swiftype-wrapper"><div class="swiftype"><form 
class="search-form"><img class="search-box-toggler hidden-xs hidden-sm" 
src="/images/icons/search-glass-704bd4ff.png"/><div class="search-box"><img 
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id="st-search-input" class="st-search-input" placeholder="Search 
Doc..."/></div><img class="swiftype-row-hider hidden-md hidden-lg" 
src="/images/icons/drawer-toggle-active-fcbef12a.png"/></form></div></div><div 
class="mobile-left-menu-toggler hidden-md hidden-lg"></di
 v></div></div></div><div id="page" class="container-fluid"><div 
class="row"><div id="left-menu-wrapper" class="col-md-3"><nav 
id="nav-main"><ul><li class="level-1"><a class="expandible" 
href="/"><span>Apache PredictionIO (incubating) Documentation</span></a><ul><li 
class="level-2"><a class="final" href="/"><span>Welcome to Apache PredictionIO 
(incubating)</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>Getting Started</span></a><ul><li class="level-2"><a 
class="final" href="/start/"><span>A Quick Intro</span></a></li><li 
class="level-2"><a class="final" href="/install/"><span>Installing Apache 
PredictionIO (incubating)</span></a></li><li class="level-2"><a class="final" 
href="/start/download/"><span>Downloading an Engine Template</span></a></li><li 
class="level-2"><a class="final" href="/start/deploy/"><span>Deploying Your 
First Engine</span></a></li><li class="level-2"><a class="final" 
href="/start/customize/"><span>Customizing the Engine</span></a
 ></li></ul></li><li class="level-1"><a class="expandible" 
 >href="#"><span>Integrating with Your App</span></a><ul><li class="level-2"><a 
 >class="final" href="/appintegration/"><span>App Integration 
 >Overview</span></a></li><li class="level-2"><a class="expandible" 
 >href="/sdk/"><span>List of SDKs</span></a><ul><li class="level-3"><a 
 >class="final" href="/sdk/java/"><span>Java & Android SDK</span></a></li><li 
 >class="level-3"><a class="final" href="/sdk/php/"><span>PHP 
 >SDK</span></a></li><li class="level-3"><a class="final" 
 >href="/sdk/python/"><span>Python SDK</span></a></li><li class="level-3"><a 
 >class="final" href="/sdk/ruby/"><span>Ruby SDK</span></a></li><li 
 >class="level-3"><a class="final" href="/sdk/community/"><span>Community 
 >Powered SDKs</span></a></li></ul></li></ul></li><li class="level-1"><a 
 >class="expandible" href="#"><span>Deploying an Engine</span></a><ul><li 
 >class="level-2"><a class="final" href="/deploy/"><span>Deploying as a Web 
 >Service</span></a></li><li class="level-2"><
 a class="final" href="/cli/#engine-commands"><span>Engine Command-line 
Interface</span></a></li><li class="level-2"><a class="final" 
href="/deploy/engineparams/"><span>Setting Engine Parameters</span></a></li><li 
class="level-2"><a class="final" href="/deploy/enginevariants/"><span>Deploying 
Multiple Engine Variants</span></a></li></ul></li><li class="level-1"><a 
class="expandible" href="#"><span>Customizing an Engine</span></a><ul><li 
class="level-2"><a class="final" href="/customize/"><span>Learning 
DASE</span></a></li><li class="level-2"><a class="final" 
href="/customize/dase/"><span>Implement DASE</span></a></li><li 
class="level-2"><a class="final" 
href="/customize/troubleshooting/"><span>Troubleshooting Engine 
Development</span></a></li><li class="level-2"><a class="final" 
href="/api/current/#package"><span>Engine Scala 
APIs</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>Collecting and Analyzing Data</span></a><ul><li 
class="level-2"><a class=
 "final" href="/datacollection/"><span>Event Server Overview</span></a></li><li 
class="level-2"><a class="final" href="/cli/#event-server-commands"><span>Event 
Server Command-line Interface</span></a></li><li class="level-2"><a 
class="final" href="/datacollection/eventapi/"><span>Collecting Data with 
REST/SDKs</span></a></li><li class="level-2"><a class="final" 
href="/datacollection/eventmodel/"><span>Events Modeling</span></a></li><li 
class="level-2"><a class="final" 
href="/datacollection/webhooks/"><span>Unifying Multichannel Data with 
Webhooks</span></a></li><li class="level-2"><a class="final" 
href="/datacollection/channel/"><span>Channel</span></a></li><li 
class="level-2"><a class="final" 
href="/datacollection/batchimport/"><span>Importing Data in 
Batch</span></a></li><li class="level-2"><a class="final" 
href="/datacollection/analytics/"><span>Using Analytics 
Tools</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>Choosing an Algorithm(s)</span></
 a><ul><li class="level-2"><a class="final" href="/algorithm/"><span>Built-in 
Algorithm Libraries</span></a></li><li class="level-2"><a class="final" 
href="/algorithm/switch/"><span>Switching to Another 
Algorithm</span></a></li><li class="level-2"><a class="final" 
href="/algorithm/multiple/"><span>Combining Multiple 
Algorithms</span></a></li><li class="level-2"><a class="final" 
href="/algorithm/custom/"><span>Adding Your Own 
Algorithms</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>ML Tuning and Evaluation</span></a><ul><li class="level-2"><a 
class="final" href="/evaluation/"><span>Overview</span></a></li><li 
class="level-2"><a class="final" 
href="/evaluation/paramtuning/"><span>Hyperparameter Tuning</span></a></li><li 
class="level-2"><a class="final" 
href="/evaluation/evaluationdashboard/"><span>Evaluation 
Dashboard</span></a></li><li class="level-2"><a class="final" 
href="/evaluation/metricchoose/"><span>Choosing Evaluation 
Metrics</span></a></li>
 <li class="level-2"><a class="final" 
href="/evaluation/metricbuild/"><span>Building Evaluation 
Metrics</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>System Architecture</span></a><ul><li class="level-2"><a 
class="final" href="/system/"><span>Architecture Overview</span></a></li><li 
class="level-2"><a class="final" href="/system/anotherdatastore/"><span>Using 
Another Data Store</span></a></li></ul></li><li class="level-1"><a 
class="expandible" href="#"><span>Engine Template Gallery</span></a><ul><li 
class="level-2"><a class="final" 
href="http://templates.prediction.io";><span>Browse</span></a></li><li 
class="level-2"><a class="final" 
href="/community/submit-template/"><span>Submit your Engine as a 
Template</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>Demo Tutorials</span></a><ul><li class="level-2"><a 
class="final" href="/demo/tapster/"><span>Comics Recommendation 
Demo</span></a></li><li class="level-2"><a class=
 "final" href="/demo/community/"><span>Community Contributed 
Demo</span></a></li><li class="level-2"><a class="final" 
href="/demo/textclassification/"><span>Text Classification Engine 
Tutorial</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="/community/"><span>Getting Involved</span></a><ul><li class="level-2"><a 
class="final" href="/community/contribute-code/"><span>Contribute 
Code</span></a></li><li class="level-2"><a class="final" 
href="/community/contribute-documentation/"><span>Contribute 
Documentation</span></a></li><li class="level-2"><a class="final active" 
href="/community/contribute-sdk/"><span>Contribute a SDK</span></a></li><li 
class="level-2"><a class="final" 
href="/community/contribute-webhook/"><span>Contribute a 
Webhook</span></a></li><li class="level-2"><a class="final" 
href="/community/projects/"><span>Community 
Projects</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>Getting Help</span></a><ul><li class="lev
 el-2"><a class="final" href="/resources/faq/"><span>FAQs</span></a></li><li 
class="level-2"><a class="final" href="/support/"><span>Community 
Support</span></a></li><li class="level-2"><a class="final" 
href="/support/#enterprise-support"><span>Enterprise 
Support</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>Resources</span></a><ul><li class="level-2"><a class="final" 
href="/resources/intellij/"><span>Developing Engines with IntelliJ 
IDEA</span></a></li><li class="level-2"><a class="final" 
href="/resources/upgrade/"><span>Upgrade Instructions</span></a></li><li 
class="level-2"><a class="final" 
href="/resources/glossary/"><span>Glossary</span></a></li></ul></li></ul></nav></div><div
 class="col-md-9 col-sm-12"><div class="content-header hidden-md 
hidden-lg"><div id="breadcrumbs" class="hidden-sm hidden xs"><ul><li><a 
href="/community/">Getting Involved</a><span 
class="spacer">&gt;</span></li><li><span class="last">Contribute a 
SDK</span></li></ul></d
 iv><div id="page-title"><h1>Contribute a SDK</h1></div></div><div 
id="table-of-content-wrapper"><h5>On this page</h5><aside 
id="table-of-contents"><ul> <li> <a href="#event-client">Event Client</a> </li> 
<li> <a href="#engine-client">Engine Client</a> </li> <li> <a 
href="#testing-your-sdk">Testing Your SDK</a> </li> </ul> </aside><hr/><a 
id="edit-page-link" 
href="https://github.com/apache/incubator-predictionio/tree/livedoc/docs/manual/source/community/contribute-sdk.html.md";><img
 src="/images/icons/edit-pencil-d6c1bb3d.png"/>Edit this page</a></div><div 
class="content-header hidden-sm hidden-xs"><div id="breadcrumbs" 
class="hidden-sm hidden xs"><ul><li><a href="/community/">Getting 
Involved</a><span class="spacer">&gt;</span></li><li><span 
class="last">Contribute a SDK</span></li></ul></div><div 
id="page-title"><h1>Contribute a SDK</h1></div></div><div class="content"><p>A 
SDK should provide convenient methods for client applications to easily record 
users&#39; behaviors in Apache 
 PredictionIO (incubating)&#39;s Event Server and also query recommendations 
from the ML Engines. Therefore, a SDK typically has 2 corresponding clients: 
<code>Event Client</code> and <code>Engine Client</code>.</p><p>The following 
guideline bases on the REST API provided by Apache PredictionIO 
(incubating)&#39;s Event Client which details can be found <a 
href="http://docs.prediction.io/datacollection/eventapi/";>here</a>.</p><h2 
id='event-client' class='header-anchors'>Event Client</h2><p>Because the Event 
Server has only 1 connection point, the <code>Event Client</code> needs to 
implement this core request first. The core request has the following 
rules.</p> <ul> <li><p><strong>URL</strong>: <code>&lt;base 
URL&gt;/events.json?accessKey=&lt;your access key&gt;</code> (e.g. <a 
href="http://localhost:7070/events.json?accessKey=1234567890";>http://localhost:7070/events.json?accessKey=1234567890</a>)</p></li>
 <li><p><strong>Request</strong>: <code>POST</code> + JSON data. Please refer 
to 
 the <a href="http://docs.prediction.io/datacollection/eventapi/";>Event 
Creation API</a> for the details on the fields of the JSON data 
object.</p></li> <li><p><strong>Response</strong>:</p> <ul> 
<li><strong>Success</strong>: status code <code>201</code> with a JSON result 
containing the <code>eventId</code>.</li> <li><strong>Failure</strong>: a JSON 
result containing a <code>message</code> field describing the error. <ul> 
<li>Status code <code>401</code>: invalid access key.</li> <li>Status code 
<code>400</code>: fail to parse the JSON request e.g. missing required fields 
like <code>event</code>, or invalid <code>eventTime</code> format.</li> 
</ul></li> </ul></li> </ul> <p>Other convenient methods are just shortcut. They 
could simply build the event&#39;s parameters and call the core request. 
<code>Event Client</code> should support the following 7 shorthand 
operations:</p> <ul> <li><p><strong>User entities</strong></p> <ul> 
<li><p><strong>Sets properties of a user</strong>: with th
 e JSON object</p><div class="highlight json"><table style="border-spacing: 
0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre 
class="lineno">1
+<!DOCTYPE html><html><head><title>Contribute a SDK</title><meta 
charset="utf-8"/><meta content="IE=edge,chrome=1" 
http-equiv="X-UA-Compatible"/><meta name="viewport" 
content="width=device-width, initial-scale=1.0"/><meta class="swiftype" 
name="title" data-type="string" content="Contribute a SDK"/><link 
rel="canonical" 
href="https://docs.prediction.io/community/contribute-sdk/"/><link 
href="/images/favicon/normal-b330020a.png" rel="shortcut icon"/><link 
href="/images/favicon/apple-c0febcf2.png" rel="apple-touch-icon"/><link 
href="//fonts.googleapis.com/css?family=Open+Sans:300italic,400italic,600italic,700italic,800italic,400,300,600,700,800"
 rel="stylesheet"/><link 
href="//maxcdn.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css" 
rel="stylesheet"/><link href="/stylesheets/application-a2a2f408.css" 
rel="stylesheet" type="text/css"/><script 
src="//cdnjs.cloudflare.com/ajax/libs/html5shiv/3.7.2/html5shiv.min.js"></script><script
 src="//cdn.mathjax.org/mathjax/latest/MathJax.
 js?config=TeX-AMS-MML_HTMLorMML"></script><script 
src="//use.typekit.net/pqo0itb.js"></script><script>try{Typekit.load({ async: 
true });}catch(e){}</script></head><body><div id="global"><header><div 
class="container" id="header-wrapper"><div class="row"><div 
class="col-sm-12"><div id="logo-wrapper"><span id="drawer-toggle"></span><a 
href="#"></a><a href="http://predictionio.incubator.apache.org/";><img 
alt="PredictionIO" id="logo" 
src="/images/logos/logo-ee2b9bb3.png"/></a></div><div id="menu-wrapper"><div 
id="pill-wrapper"><a class="pill left" 
href="//templates.prediction.io/">TEMPLATES</a> <a class="pill right" 
href="//github.com/apache/incubator-predictionio/">OPEN 
SOURCE</a></div></div><img class="mobile-search-bar-toggler hidden-md 
hidden-lg" 
src="/images/icons/search-glass-704bd4ff.png"/></div></div></div></header><div 
id="search-bar-row-wrapper"><div class="container-fluid" 
id="search-bar-row"><div class="row"><div class="col-md-9 col-sm-11 
col-xs-11"><div class="hidden-md hid
 den-lg" id="mobile-page-heading-wrapper"><p>PredictionIO 
Docs</p><h4>Contribute a SDK</h4></div><h4 class="hidden-sm 
hidden-xs">PredictionIO Docs</h4></div><div class="col-md-3 col-sm-1 col-xs-1 
hidden-md hidden-lg"><img id="left-menu-indicator" 
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class="row"><div id="left-menu-wrapper" class="col-md-3"><nav id="n
 av-main"><ul><li class="level-1"><a class="expandible" href="/"><span>Apache 
PredictionIO (incubating) Documentation</span></a><ul><li class="level-2"><a 
class="final" href="/"><span>Welcome to Apache PredictionIO 
(incubating)</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>Getting Started</span></a><ul><li class="level-2"><a 
class="final" href="/start/"><span>A Quick Intro</span></a></li><li 
class="level-2"><a class="final" href="/install/"><span>Installing Apache 
PredictionIO (incubating)</span></a></li><li class="level-2"><a class="final" 
href="/start/download/"><span>Downloading an Engine Template</span></a></li><li 
class="level-2"><a class="final" href="/start/deploy/"><span>Deploying Your 
First Engine</span></a></li><li class="level-2"><a class="final" 
href="/start/customize/"><span>Customizing the 
Engine</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>Integrating with Your App</span></a><ul><li class="level-2
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class="level-3"><a class="final" href="/sdk/php/"><span>PHP 
SDK</span></a></li><li class="level-3"><a class="final" 
href="/sdk/python/"><span>Python SDK</span></a></li><li class="level-3"><a 
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class="level-3"><a class="final" href="/sdk/community/"><span>Community Powered 
SDKs</span></a></li></ul></li></ul></li><li class="level-1"><a 
class="expandible" href="#"><span>Deploying an Engine</span></a><ul><li 
class="level-2"><a class="final" href="/deploy/"><span>Deploying as a Web 
Service</span></a></li><li class="level-2"><a class="final" 
href="/cli/#engine-commands"><span>Engine Command-line 
Interface</span></a></li><li class="level-2"><a class="final
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class="level-2"><a class="final" href="/deploy/engineparams/"><span>Setting 
Engine Parameters</span></a></li><li class="level-2"><a class="final" 
href="/deploy/enginevariants/"><span>Deploying Multiple Engine 
Variants</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>Customizing an Engine</span></a><ul><li class="level-2"><a 
class="final" href="/customize/"><span>Learning DASE</span></a></li><li 
class="level-2"><a class="final" href="/customize/dase/"><span>Implement 
DASE</span></a></li><li class="level-2"><a class="final" 
href="/customize/troubleshooting/"><span>Troubleshooting Engine 
Development</span></a></li><li class="level-2"><a class="final" 
href="/api/current/#package"><span>Engine Scala 
APIs</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>Collecting and Analyzing Data</span></a><ul><li 
class="level-2"><a class="final" href="/datacollectio
 n/"><span>Event Server Overview</span></a></li><li class="level-2"><a 
class="final" href="/cli/#event-server-commands"><span>Event Server 
Command-line Interface</span></a></li><li class="level-2"><a class="final" 
href="/datacollection/eventapi/"><span>Collecting Data with 
REST/SDKs</span></a></li><li class="level-2"><a class="final" 
href="/datacollection/eventmodel/"><span>Events Modeling</span></a></li><li 
class="level-2"><a class="final" 
href="/datacollection/webhooks/"><span>Unifying Multichannel Data with 
Webhooks</span></a></li><li class="level-2"><a class="final" 
href="/datacollection/channel/"><span>Channel</span></a></li><li 
class="level-2"><a class="final" 
href="/datacollection/batchimport/"><span>Importing Data in 
Batch</span></a></li><li class="level-2"><a class="final" 
href="/datacollection/analytics/"><span>Using Analytics 
Tools</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>Choosing an Algorithm(s)</span></a><ul><li class="level-2"><a
  class="final" href="/algorithm/"><span>Built-in Algorithm 
Libraries</span></a></li><li class="level-2"><a class="final" 
href="/algorithm/switch/"><span>Switching to Another 
Algorithm</span></a></li><li class="level-2"><a class="final" 
href="/algorithm/multiple/"><span>Combining Multiple 
Algorithms</span></a></li><li class="level-2"><a class="final" 
href="/algorithm/custom/"><span>Adding Your Own 
Algorithms</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>ML Tuning and Evaluation</span></a><ul><li class="level-2"><a 
class="final" href="/evaluation/"><span>Overview</span></a></li><li 
class="level-2"><a class="final" 
href="/evaluation/paramtuning/"><span>Hyperparameter Tuning</span></a></li><li 
class="level-2"><a class="final" 
href="/evaluation/evaluationdashboard/"><span>Evaluation 
Dashboard</span></a></li><li class="level-2"><a class="final" 
href="/evaluation/metricchoose/"><span>Choosing Evaluation 
Metrics</span></a></li><li class="level-2"><a class
 ="final" href="/evaluation/metricbuild/"><span>Building Evaluation 
Metrics</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>System Architecture</span></a><ul><li class="level-2"><a 
class="final" href="/system/"><span>Architecture Overview</span></a></li><li 
class="level-2"><a class="final" href="/system/anotherdatastore/"><span>Using 
Another Data Store</span></a></li></ul></li><li class="level-1"><a 
class="expandible" href="#"><span>Engine Template Gallery</span></a><ul><li 
class="level-2"><a class="final" 
href="http://templates.prediction.io";><span>Browse</span></a></li><li 
class="level-2"><a class="final" 
href="/community/submit-template/"><span>Submit your Engine as a 
Template</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>Demo Tutorials</span></a><ul><li class="level-2"><a 
class="final" href="/demo/tapster/"><span>Comics Recommendation 
Demo</span></a></li><li class="level-2"><a class="final" href="/demo/communit
 y/"><span>Community Contributed Demo</span></a></li><li class="level-2"><a 
class="final" href="/demo/textclassification/"><span>Text Classification Engine 
Tutorial</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="/community/"><span>Getting Involved</span></a><ul><li class="level-2"><a 
class="final" href="/community/contribute-code/"><span>Contribute 
Code</span></a></li><li class="level-2"><a class="final" 
href="/community/contribute-documentation/"><span>Contribute 
Documentation</span></a></li><li class="level-2"><a class="final active" 
href="/community/contribute-sdk/"><span>Contribute a SDK</span></a></li><li 
class="level-2"><a class="final" 
href="/community/contribute-webhook/"><span>Contribute a 
Webhook</span></a></li><li class="level-2"><a class="final" 
href="/community/projects/"><span>Community 
Projects</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>Getting Help</span></a><ul><li class="level-2"><a class="final" 
href=
 "/resources/faq/"><span>FAQs</span></a></li><li class="level-2"><a 
class="final" href="/support/"><span>Support</span></a></li></ul></li><li 
class="level-1"><a class="expandible" 
href="#"><span>Resources</span></a><ul><li class="level-2"><a class="final" 
href="/resources/intellij/"><span>Developing Engines with IntelliJ 
IDEA</span></a></li><li class="level-2"><a class="final" 
href="/resources/upgrade/"><span>Upgrade Instructions</span></a></li><li 
class="level-2"><a class="final" 
href="/resources/glossary/"><span>Glossary</span></a></li></ul></li></ul></nav></div><div
 class="col-md-9 col-sm-12"><div class="content-header hidden-md 
hidden-lg"><div id="breadcrumbs" class="hidden-sm hidden xs"><ul><li><a 
href="/community/">Getting Involved</a><span 
class="spacer">&gt;</span></li><li><span class="last">Contribute a 
SDK</span></li></ul></div><div id="page-title"><h1>Contribute a 
SDK</h1></div></div><div id="table-of-content-wrapper"><h5>On this 
page</h5><aside id="table-of-contents"><ul>
  <li> <a href="#event-client">Event Client</a> </li> <li> <a 
href="#engine-client">Engine Client</a> </li> <li> <a 
href="#testing-your-sdk">Testing Your SDK</a> </li> </ul> </aside><hr/><a 
id="edit-page-link" 
href="https://github.com/apache/incubator-predictionio/tree/livedoc/docs/manual/source/community/contribute-sdk.html.md";><img
 src="/images/icons/edit-pencil-d6c1bb3d.png"/>Edit this page</a></div><div 
class="content-header hidden-sm hidden-xs"><div id="breadcrumbs" 
class="hidden-sm hidden xs"><ul><li><a href="/community/">Getting 
Involved</a><span class="spacer">&gt;</span></li><li><span 
class="last">Contribute a SDK</span></li></ul></div><div 
id="page-title"><h1>Contribute a SDK</h1></div></div><div class="content"><p>A 
SDK should provide convenient methods for client applications to easily record 
users&#39; behaviors in Apache PredictionIO (incubating)&#39;s Event Server and 
also query recommendations from the ML Engines. Therefore, a SDK typically has 
2 corresponding clients
 : <code>Event Client</code> and <code>Engine Client</code>.</p><p>The 
following guideline bases on the REST API provided by Apache PredictionIO 
(incubating)&#39;s Event Client which details can be found <a 
href="http://docs.prediction.io/datacollection/eventapi/";>here</a>.</p><h2 
id='event-client' class='header-anchors'>Event Client</h2><p>Because the Event 
Server has only 1 connection point, the <code>Event Client</code> needs to 
implement this core request first. The core request has the following 
rules.</p> <ul> <li><p><strong>URL</strong>: <code>&lt;base 
URL&gt;/events.json?accessKey=&lt;your access key&gt;</code> (e.g. <a 
href="http://localhost:7070/events.json?accessKey=1234567890";>http://localhost:7070/events.json?accessKey=1234567890</a>)</p></li>
 <li><p><strong>Request</strong>: <code>POST</code> + JSON data. Please refer 
to the <a href="http://docs.prediction.io/datacollection/eventapi/";>Event 
Creation API</a> for the details on the fields of the JSON data object.</p></li>
  <li><p><strong>Response</strong>:</p> <ul> <li><strong>Success</strong>: 
status code <code>201</code> with a JSON result containing the 
<code>eventId</code>.</li> <li><strong>Failure</strong>: a JSON result 
containing a <code>message</code> field describing the error. <ul> <li>Status 
code <code>401</code>: invalid access key.</li> <li>Status code 
<code>400</code>: fail to parse the JSON request e.g. missing required fields 
like <code>event</code>, or invalid <code>eventTime</code> format.</li> 
</ul></li> </ul></li> </ul> <p>Other convenient methods are just shortcut. They 
could simply build the event&#39;s parameters and call the core request. 
<code>Event Client</code> should support the following 7 shorthand 
operations:</p> <ul> <li><p><strong>User entities</strong></p> <ul> 
<li><p><strong>Sets properties of a user</strong>: with the JSON object</p><div 
class="highlight json"><table style="border-spacing: 0"><tbody><tr><td 
class="gutter gl" style="text-align: right"><pre class="li
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-<!DOCTYPE html><html><head><title>Contribute a Webhooks Connector</title><meta 
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(incubating)</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>Getting Started</span></a><ul><li class="level-2"><a 
class="final" href="/start/"><span>A Quick Intro</span></a></li><li 
class="level-2"><a class="final" href="/install/"><span>Installing Apache 
PredictionIO (incubating)</span></a></li><li class="level-2"><a class="final" 
href="/start/download/"><span>Downloading an Engine Template</span></a></li><li 
class="level-2"><a class="final" href="/start/deploy/"><span>Deploying Your 
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href="/start/customize/">
 <span>Customizing the Engine</span></a></li></ul></li><li class="level-1"><a 
class="expandible" href="#"><span>Integrating with Your App</span></a><ul><li 
class="level-2"><a class="final" href="/appintegration/"><span>App Integration 
Overview</span></a></li><li class="level-2"><a class="expandible" 
href="/sdk/"><span>List of SDKs</span></a><ul><li class="level-3"><a 
class="final" href="/sdk/java/"><span>Java & Android SDK</span></a></li><li 
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class="level-2"><a class="final" href="/deploy/"><span>Deploying as a Web Servic
 e</span></a></li><li class="level-2"><a class="final" 
href="/cli/#engine-commands"><span>Engine Command-line 
Interface</span></a></li><li class="level-2"><a class="final" 
href="/deploy/engineparams/"><span>Setting Engine Parameters</span></a></li><li 
class="level-2"><a class="final" href="/deploy/enginevariants/"><span>Deploying 
Multiple Engine Variants</span></a></li></ul></li><li class="level-1"><a 
class="expandible" href="#"><span>Customizing an Engine</span></a><ul><li 
class="level-2"><a class="final" href="/customize/"><span>Learning 
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href="/api/current/#package"><span>Engine Scala 
APIs</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>Collecting and Analyzing Data</span
 ></a><ul><li class="level-2"><a class="final" 
 >href="/datacollection/"><span>Event Server Overview</span></a></li><li 
 >class="level-2"><a class="final" 
 >href="/cli/#event-server-commands"><span>Event Server Command-line 
 >Interface</span></a></li><li class="level-2"><a class="final" 
 >href="/datacollection/eventapi/"><span>Collecting Data with 
 >REST/SDKs</span></a></li><li class="level-2"><a class="final" 
 >href="/datacollection/eventmodel/"><span>Events Modeling</span></a></li><li 
 >class="level-2"><a class="final" 
 >href="/datacollection/webhooks/"><span>Unifying Multichannel Data with 
 >Webhooks</span></a></li><li class="level-2"><a class="final" 
 >href="/datacollection/channel/"><span>Channel</span></a></li><li 
 >class="level-2"><a class="final" 
 >href="/datacollection/batchimport/"><span>Importing Data in 
 >Batch</span></a></li><li class="level-2"><a class="final" 
 >href="/datacollection/analytics/"><span>Using Analytics 
 >Tools</span></a></li></ul></li><li class="level-1"><a class="expandible" 
 >href="#"><
 span>Choosing an Algorithm(s)</span></a><ul><li class="level-2"><a 
class="final" href="/algorithm/"><span>Built-in Algorithm 
Libraries</span></a></li><li class="level-2"><a class="final" 
href="/algorithm/switch/"><span>Switching to Another 
Algorithm</span></a></li><li class="level-2"><a class="final" 
href="/algorithm/multiple/"><span>Combining Multiple 
Algorithms</span></a></li><li class="level-2"><a class="final" 
href="/algorithm/custom/"><span>Adding Your Own 
Algorithms</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>ML Tuning and Evaluation</span></a><ul><li class="level-2"><a 
class="final" href="/evaluation/"><span>Overview</span></a></li><li 
class="level-2"><a class="final" 
href="/evaluation/paramtuning/"><span>Hyperparameter Tuning</span></a></li><li 
class="level-2"><a class="final" 
href="/evaluation/evaluationdashboard/"><span>Evaluation 
Dashboard</span></a></li><li class="level-2"><a class="final" 
href="/evaluation/metricchoose/"><span>Choos
 ing Evaluation Metrics</span></a></li><li class="level-2"><a class="final" 
href="/evaluation/metricbuild/"><span>Building Evaluation 
Metrics</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>System Architecture</span></a><ul><li class="level-2"><a 
class="final" href="/system/"><span>Architecture Overview</span></a></li><li 
class="level-2"><a class="final" href="/system/anotherdatastore/"><span>Using 
Another Data Store</span></a></li></ul></li><li class="level-1"><a 
class="expandible" href="#"><span>Engine Template Gallery</span></a><ul><li 
class="level-2"><a class="final" 
href="http://templates.prediction.io";><span>Browse</span></a></li><li 
class="level-2"><a class="final" 
href="/community/submit-template/"><span>Submit your Engine as a 
Template</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>Demo Tutorials</span></a><ul><li class="level-2"><a 
class="final" href="/demo/tapster/"><span>Comics Recommendation Demo</span>
 </a></li><li class="level-2"><a class="final" 
href="/demo/community/"><span>Community Contributed Demo</span></a></li><li 
class="level-2"><a class="final" href="/demo/textclassification/"><span>Text 
Classification Engine Tutorial</span></a></li></ul></li><li class="level-1"><a 
class="expandible" href="/community/"><span>Getting Involved</span></a><ul><li 
class="level-2"><a class="final" 
href="/community/contribute-code/"><span>Contribute Code</span></a></li><li 
class="level-2"><a class="final" 
href="/community/contribute-documentation/"><span>Contribute 
Documentation</span></a></li><li class="level-2"><a class="final" 
href="/community/contribute-sdk/"><span>Contribute a SDK</span></a></li><li 
class="level-2"><a class="final active" 
href="/community/contribute-webhook/"><span>Contribute a 
Webhook</span></a></li><li class="level-2"><a class="final" 
href="/community/projects/"><span>Community 
Projects</span></a></li></ul></li><li class="level-1"><a class="expandible" 
href="#"><span>Get
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href="/resources/intellij/"><span>Developing Engines with IntelliJ 
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hidden-lg"><div id="breadcrumbs" class="hidden-sm hidden xs"><ul><li><a 
href="/community/">Getting Involved</a><span 
class="spacer">&gt;</span></li><li><span class="last
 ">Contribute a Webhook</span></li></ul></div><div 
id="page-title"><h1>Contribute a Webhooks Connector</h1></div></div><div 
id="table-of-content-wrapper"><h5>On this page</h5><aside 
id="table-of-contents"><ul> <li> <a href="#example">Example</a> <ul> <li> <a 
href="#1-implement-webhooks-connector">1. Implement Webhooks Connector</a> 
</li> <li> <a href="#2-integrate-the-connector-into-event-server">2. Integrate 
the Connector into Event Server</a> </li> </ul> </li> </ul> </aside><hr/><a 
id="edit-page-link" 
href="https://github.com/apache/incubator-predictionio/tree/livedoc/docs/manual/source/community/contribute-webhook.html.md";><img
 src="/images/icons/edit-pencil-d6c1bb3d.png"/>Edit this page</a></div><div 
class="content-header hidden-sm hidden-xs"><div id="breadcrumbs" 
class="hidden-sm hidden xs"><ul><li><a href="/community/">Getting 
Involved</a><span class="spacer">&gt;</span></li><li><span 
class="last">Contribute a Webhook</span></li></ul></div><div 
id="page-title"><h1>Contribute a 
 Webhooks Connector</h1></div></div><div class="content"><div 
class="alert-message note"><p>Please check out the <a 
href="https://github.com/apache/incubator-predictionio";>latest develop 
branch</a>.</p></div><p>Event server can collect data from other third-party 
sites or software through their webhooks services (for example, SegmentIO, 
MailChimp). To support that, a <em>Webhooks Connector</em> for the third-party 
data is needed to be integrated into Event Server. The job of the <em>Webhooks 
Connector</em> is as simply as converting the third-party data into Event JSON. 
You can find an example below.</p><p>Currently we support two types of 
connectors: <code>JsonConnector</code> and <code>FormConnector</code>, which is 
responsible for accepting <em>JSON</em> data and <em>Form-submission</em> data, 
respectively.</p><p><strong>JsonConnector</strong>:</p><div class="highlight 
scala"><table style="border-spacing: 0"><tbody><tr><td class="gutter gl" 
style="text-align: right"><pre class="li
 neno">1
+<!DOCTYPE html><html><head><title>Contribute a Webhooks Connector</title><meta 
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 >href="/community/contribute-sdk/"><span>Contribute a SDK</span></a></li><li 
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href="/resources/upgrade/"><span>Upgrade Instructions</span></a></li><li 
class="level-2"><a class="final" 
href="/resources/glossary/"><span>Glossary</span></a></li></ul></li></ul></nav></div><div
 class="col-md-9 col-sm-12"><div class="content-header hidden-md 
hidden-lg"><div id="breadcrumbs" class="hidden-sm hidden xs"><ul><li><a 
href="/community/">Getting Involved</a><span 
class="spacer">&gt;</span></li><li><span class="last">Contribute a 
Webhook</span></li></ul></div><div id="page-title"><h1>Contribute a Webhooks 
Connector</h1></div></div><div id="table-of-content-wrapper
 "><h5>On this page</h5><aside id="table-of-contents"><ul> <li> <a 
href="#example">Example</a> <ul> <li> <a 
href="#1-implement-webhooks-connector">1. Implement Webhooks Connector</a> 
</li> <li> <a href="#2-integrate-the-connector-into-event-server">2. Integrate 
the Connector into Event Server</a> </li> </ul> </li> </ul> </aside><hr/><a 
id="edit-page-link" 
href="https://github.com/apache/incubator-predictionio/tree/livedoc/docs/manual/source/community/contribute-webhook.html.md";><img
 src="/images/icons/edit-pencil-d6c1bb3d.png"/>Edit this page</a></div><div 
class="content-header hidden-sm hidden-xs"><div id="breadcrumbs" 
class="hidden-sm hidden xs"><ul><li><a href="/community/">Getting 
Involved</a><span class="spacer">&gt;</span></li><li><span 
class="last">Contribute a Webhook</span></li></ul></div><div 
id="page-title"><h1>Contribute a Webhooks Connector</h1></div></div><div 
class="content"><div class="alert-message note"><p>Please check out the <a 
href="https://github.com/apache/incu
 bator-predictionio">latest develop branch</a>.</p></div><p>Event server can 
collect data from other third-party sites or software through their webhooks 
services (for example, SegmentIO, MailChimp). To support that, a <em>Webhooks 
Connector</em> for the third-party data is needed to be integrated into Event 
Server. The job of the <em>Webhooks Connector</em> is as simply as converting 
the third-party data into Event JSON. You can find an example 
below.</p><p>Currently we support two types of connectors: 
<code>JsonConnector</code> and <code>FormConnector</code>, which is responsible 
for accepting <em>JSON</em> data and <em>Form-submission</em> data, 
respectively.</p><p><strong>JsonConnector</strong>:</p><div class="highlight 
scala"><table style="border-spacing: 0"><tbody><tr><td class="gutter gl" 
style="text-align: right"><pre class="lineno">1
 2
 3
 4

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