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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" 
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class="final" href="/system/"><span>Architecture Overview</span></a></li><li 
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Templates</span></a><ul><li class="level-2"><a class="final" 
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Start</span></a></li><li class="level-3"><a class="final" 
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 n/dase/"><span>DASE</span></a></li><li class="level-3"><a class="final" 
href="/templates/recommendation/evaluation/"><span>Evaluation 
Explained</span></a></li><li class="level-3"><a class="final" 
href="/templates/recommendation/how-to/"><span>How-To</span></a></li><li 
class="level-3"><a class="final" 
href="/templates/recommendation/reading-custom-events/"><span>Read Custom 
Events</span></a></li><li class="level-3"><a class="final" 
href="/templates/recommendation/customize-data-prep/"><span>Customize Data 
Preparator</span></a></li><li class="level-3"><a class="final" 
href="/templates/recommendation/customize-serving/"><span>Customize 
Serving</span></a></li><li class="level-3"><a class="final" 
href="/templates/recommendation/training-with-implicit-preference/"><span>Train 
with Implicit Preference</span></a></li><li class="level-3"><a class="final" 
href="/templates/recommendation/blacklist-items/"><span>Filter Recommended 
Items by Blacklist in Query</span></a></li><li class="level-3"><
 a class="final" href="/templates/recommendation/batch-evaluator/"><span>Batch 
Persistable Evaluator</span></a></li></ul></li><li class="level-2"><a 
class="expandible" href="#"><span>E-Commerce Recommendation</span></a><ul><li 
class="level-3"><a class="final" 
href="/templates/ecommercerecommendation/quickstart/"><span>Quick 
Start</span></a></li><li class="level-3"><a class="final" 
href="/templates/ecommercerecommendation/dase/"><span>DASE</span></a></li><li 
class="level-3"><a class="final" 
href="/templates/ecommercerecommendation/how-to/"><span>How-To</span></a></li><li
 class="level-3"><a class="final" 
href="/templates/ecommercerecommendation/train-with-rate-event/"><span>Train 
with Rate Event</span></a></li><li class="level-3"><a class="final" 
href="/templates/ecommercerecommendation/adjust-score/"><span>Adjust 
Score</span></a></li></ul></li><li class="level-2"><a class="expandible" 
href="#"><span>Similar Product</span></a><ul><li class="level-3"><a 
class="final" href="/templates/si
 milarproduct/quickstart/"><span>Quick Start</span></a></li><li 
class="level-3"><a class="final" 
href="/templates/similarproduct/dase/"><span>DASE</span></a></li><li 
class="level-3"><a class="final" 
href="/templates/similarproduct/how-to/"><span>How-To</span></a></li><li 
class="level-3"><a class="final" 
href="/templates/similarproduct/multi-events-multi-algos/"><span>Multiple 
Events and Multiple Algorithms</span></a></li><li class="level-3"><a 
class="final" 
href="/templates/similarproduct/return-item-properties/"><span>Returns Item 
Properties</span></a></li><li class="level-3"><a class="final" 
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Event</span></a></li><li class="level-3"><a class="final" 
href="/templates/similarproduct/rid-user-set-event/"><span>Get Rid of Events 
for Users</span></a></li><li class="level-3"><a class="final" 
href="/templates/similarproduct/recommended-user/"><span>Recommend 
Users</span></a></li></ul></li><li class="level-2"><a c
 lass="expandible" href="#"><span>Classification</span></a><ul><li 
class="level-3"><a class="final" 
href="/templates/classification/quickstart/"><span>Quick 
Start</span></a></li><li class="level-3"><a class="final" 
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class="level-3"><a class="final" 
href="/templates/classification/how-to/"><span>How-To</span></a></li><li 
class="level-3"><a class="final" 
href="/templates/classification/add-algorithm/"><span>Use Alternative 
Algorithm</span></a></li><li class="level-3"><a class="final" 
href="/templates/classification/reading-custom-properties/"><span>Read Custom 
Properties</span></a></li></ul></li></ul></li><li class="level-1"><a 
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class="level-2"><a class="final" 
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class="level-2"><a class="final" 
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Template</span></a></li
 ></ul></li><li class="level-1"><a class="expandible" href="#"><span>Demo 
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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" 
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class="final" href="/resources/release/"><span>Release 
Cadence</span></a></li><li class="level-2"><a class="final" 
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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></l
 i></ul></li><li class="level-1"><a class="expandible" href="#"><span>Apache 
Software Foundation</span></a><ul><li class="level-2"><a class="final" 
href="https://www.apache.org/";><span>Apache Homepage</span></a></li><li 
class="level-2"><a class="final" 
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href="https://www.apache.org/foundation/thanks.html";><span>Thanks</span></a></li><li
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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 
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
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class="content-heade
 r 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 
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='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"><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 Documentation</title><meta 
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PredictionIO" id="logo" 
src="/images/logos/logo-ee2b9bb3.png"/></a><span>™</span></div><div 
id="menu-wrapper"><div id="pill-wrapper"><a class="pill left" 
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href="//github.com/apache/incubator-predictionio/">OPEN 
SOURCE</a></div></div><img class="mobile-search-bar-toggler hidden-md 
hidden-lg" 
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id="search-bar-row"><div class="row"><div class="col-md-9 col
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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" 
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  id="left-menu-wrapper" class="col-md-3"><nav id="nav-main"><ul><li 
class="level-1"><a class="expandible" href="/"><span>Apache PredictionIO™ 
Documentation</span></a><ul><li class="level-2"><a class="final" 
href="/"><span>Welcome to Apache PredictionIO</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</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="/batchpredict/"><span>Batch Predictions</span></a></li><li 
class="level-2"><a class="final" hr
 ef="/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><li class="level-2"><a class="final" 
href="/deploy/plugin/"><span>Engine Server Plugin</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>Col
 lecting 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="/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><li class="level-2"><a class="final" 
href="/datacollection/plugin/"><span>Event Server 
Plugin</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>PredictionIO Official 
 >Templates</span></a><ul><li class="level-2"><a class="final" 
 >href="/templates/"><span>Intro</span></a></li><li class="level-2"><a 
 >class="expandible" href="#"><span>Recommendation</span></a><ul><li 
 >class="level-3"><a class="final" 
 >href="/templates/recommendation/quickstart/"><span>Quick 
 >Start</span></a></li><li class="level-3"><a class="final" 
 >href="/templates/recommendation/dase/"><span>DASE</span></a></li><li 
 >class="level-
 3"><a class="final" 
href="/templates/recommendation/evaluation/"><span>Evaluation 
Explained</span></a></li><li class="level-3"><a class="final" 
href="/templates/recommendation/how-to/"><span>How-To</span></a></li><li 
class="level-3"><a class="final" 
href="/templates/recommendation/reading-custom-events/"><span>Read Custom 
Events</span></a></li><li class="level-3"><a class="final" 
href="/templates/recommendation/customize-data-prep/"><span>Customize Data 
Preparator</span></a></li><li class="level-3"><a class="final" 
href="/templates/recommendation/customize-serving/"><span>Customize 
Serving</span></a></li><li class="level-3"><a class="final" 
href="/templates/recommendation/training-with-implicit-preference/"><span>Train 
with Implicit Preference</span></a></li><li class="level-3"><a class="final" 
href="/templates/recommendation/blacklist-items/"><span>Filter Recommended 
Items by Blacklist in Query</span></a></li><li class="level-3"><a class="final" 
href="/templates/recommendation/batc
 h-evaluator/"><span>Batch Persistable Evaluator</span></a></li></ul></li><li 
class="level-2"><a class="expandible" href="#"><span>E-Commerce 
Recommendation</span></a><ul><li class="level-3"><a class="final" 
href="/templates/ecommercerecommendation/quickstart/"><span>Quick 
Start</span></a></li><li class="level-3"><a class="final" 
href="/templates/ecommercerecommendation/dase/"><span>DASE</span></a></li><li 
class="level-3"><a class="final" 
href="/templates/ecommercerecommendation/how-to/"><span>How-To</span></a></li><li
 class="level-3"><a class="final" 
href="/templates/ecommercerecommendation/train-with-rate-event/"><span>Train 
with Rate Event</span></a></li><li class="level-3"><a class="final" 
href="/templates/ecommercerecommendation/adjust-score/"><span>Adjust 
Score</span></a></li></ul></li><li class="level-2"><a class="expandible" 
href="#"><span>Similar Product</span></a><ul><li class="level-3"><a 
class="final" href="/templates/similarproduct/quickstart/"><span>Quick 
Start</span></
 a></li><li class="level-3"><a class="final" 
href="/templates/similarproduct/dase/"><span>DASE</span></a></li><li 
class="level-3"><a class="final" 
href="/templates/similarproduct/how-to/"><span>How-To</span></a></li><li 
class="level-3"><a class="final" 
href="/templates/similarproduct/multi-events-multi-algos/"><span>Multiple 
Events and Multiple Algorithms</span></a></li><li class="level-3"><a 
class="final" 
href="/templates/similarproduct/return-item-properties/"><span>Returns Item 
Properties</span></a></li><li class="level-3"><a class="final" 
href="/templates/similarproduct/train-with-rate-event/"><span>Train with Rate 
Event</span></a></li><li class="level-3"><a class="final" 
href="/templates/similarproduct/rid-user-set-event/"><span>Get Rid of Events 
for Users</span></a></li><li class="level-3"><a class="final" 
href="/templates/similarproduct/recommended-user/"><span>Recommend 
Users</span></a></li></ul></li><li class="level-2"><a class="expandible" 
href="#"><span>Classification</spa
 n></a><ul><li class="level-3"><a class="final" 
href="/templates/classification/quickstart/"><span>Quick 
Start</span></a></li><li class="level-3"><a class="final" 
href="/templates/classification/dase/"><span>DASE</span></a></li><li 
class="level-3"><a class="final" 
href="/templates/classification/how-to/"><span>How-To</span></a></li><li 
class="level-3"><a class="final" 
href="/templates/classification/add-algorithm/"><span>Use Alternative 
Algorithm</span></a></li><li class="level-3"><a class="final" 
href="/templates/classification/reading-custom-properties/"><span>Read Custom 
Properties</span></a></li></ul></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="/gallery/template-gallery/"><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="fi
 nal" 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="/cli/"><span>Command-line Interface</span></a></li><li class="level-2"><a 
class="final" href="/resources/release/"><span>Release 
Cadence</span></a></li><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><li 
class="level-1"><a class="expandible
 " href="#"><span>Apache Software Foundation</span></a><ul><li 
class="level-2"><a class="final" href="https://www.apache.org/";><span>Apache 
Homepage</span></a></li><li class="level-2"><a class="final" 
href="https://www.apache.org/licenses/";><span>License</span></a></li><li 
class="level-2"><a class="final" 
href="https://www.apache.org/foundation/sponsorship.html";><span>Sponsorship</span></a></li><li
 class="level-2"><a class="final" 
href="https://www.apache.org/foundation/thanks.html";><span>Thanks</span></a></li><li
 class="level-2"><a class="final" 
href="https://www.apache.org/security/";><span>Security</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>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.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 
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 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 i
 d='installing-locally' class='header-anchors'>Installing Locally</h2><p>Apache 
PredictionIO 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
 4
@@ -48,14 +48,14 @@ title: Page Title
 <span class="s">title</span><span class="pi">:</span> <span class="s">Secret 
Page</span>
 <span class="s">hidden</span><span class="pi">:</span> <span 
class="s">true</span>
 <span class="nn">---</span>
-</pre></td></tr></tbody></table> </div> <h2 id='important-files' 
class='header-anchors'>Important Files</h2> <table><thead> <tr> 
<th>Description</th> <th>File</th> </tr> </thead><tbody> <tr> <td>Left side 
navigation.</td> <td><code>data/nav/main.yml</code></td> </tr> <tr> <td>Main 
site layout.</td> <td><code>source/layouts/layout.html.slim</code></td> </tr> 
<tr> <td>Custom Markdown renderer based on <a 
href="https://github.com/vmg/redcarpet";>Redcarpet</a>.</td> 
<td><code>lib/custom_renderer.rb</code></td> </tr> <tr> <td>Custom TOC 
helper.</td> <td><code>helpers/table_of_contents_helpers.rb</code></td> </tr> 
</tbody></table> <h3 id='versions' 
class='header-anchors'>Versions</h3><p>Various site wide versions are defined 
in <code>data/versions.yml</code> and embedded with ERB like <code>&lt;%= 
data.versions.pio %&gt;</code>.</p><div class="alert-message note"><p>Files 
must end with a <code>.erb</code> extension to be processed as 
ERB.</p></div><h2 id='going-live' class='header-anchors'
 >Going Live</h2><p>For Apache project committers, pushing to the 
 ><code>livedoc</code> branch of PredictionIO ASF git will update <a 
 >href="http://predictionio.incubator.apache.org";>http://predictionio.incubator.apache.org</a>
 > in about 10 minutes.</p><p>Make sure the <strong>apache.org</strong> remote 
 >is attached to your <code>incubator-predictionio</code> repo, and if not, add 
 >it:</p><div class="highlight shell"><table style="border-spacing: 
 >0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre 
 >class="lineno">1
+</pre></td></tr></tbody></table> </div> <h2 id='important-files' 
class='header-anchors'>Important Files</h2> <table><thead> <tr> 
<th>Description</th> <th>File</th> </tr> </thead><tbody> <tr> <td>Left side 
navigation.</td> <td><code>data/nav/main.yml</code></td> </tr> <tr> <td>Main 
site layout.</td> <td><code>source/layouts/layout.html.slim</code></td> </tr> 
<tr> <td>Custom Markdown renderer based on <a 
href="https://github.com/vmg/redcarpet";>Redcarpet</a>.</td> 
<td><code>lib/custom_renderer.rb</code></td> </tr> <tr> <td>Custom TOC 
helper.</td> <td><code>helpers/table_of_contents_helpers.rb</code></td> </tr> 
</tbody></table> <h3 id='versions' 
class='header-anchors'>Versions</h3><p>Various site wide versions are defined 
in <code>data/versions.yml</code> and embedded with ERB like <code>&lt;%= 
data.versions.pio %&gt;</code>.</p><div class="alert-message note"><p>Files 
must end with a <code>.erb</code> extension to be processed as 
ERB.</p></div><h2 id='going-live' class='header-anchors'
 >Going Live</h2><p>For Apache project committers, pushing to the 
 ><code>livedoc</code> branch of PredictionIO ASF git will update <a 
 >href="http://predictionio.apache.org";>http://predictionio.apache.org</a> in 
 >about 10 minutes.</p><p>Make sure the <strong>apache.org</strong> remote is 
 >attached to your <code>incubator-predictionio</code> repo, and if not, add 
 >it:</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</pre></td><td class="code"><pre><span class="gp">$ </span>git remote -v
 <span class="gp">$ </span>git remote add apache 
https://git-wip-us.apache.org/repos/asf/incubator-predictionio.git
 </pre></td></tr></tbody></table> </div> <p>Then, push the <code>livedoc</code> 
branch. (It will be published and synced with the public GitHub 
mirror):</p><div class="highlight shell"><table style="border-spacing: 
0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre 
class="lineno">1</pre></td><td class="code"><pre><span class="gp">$ </span>git 
push apache livedoc
 </pre></td></tr></tbody></table> </div> <p>You can check the progress of each 
build on <a href="https://builds.apache.org/";>Apache&#39;s Jenkins</a>:</p> 
<ul> <li><a 
href="https://builds.apache.org/job/PredictionIO-build-site/";>build-site</a></li>
 <li><a 
href="https://builds.apache.org/job/PredictionIO-publish-site/";>publish-site</a></li>
 </ul> <h2 id='checking-the-site' class='header-anchors'>Checking the 
Site</h2><div class="alert-message warning"><p>The check rake task is still in 
<strong>beta</strong> however it is extremely useful for catching accidental 
errors.</p></div><div class="highlight shell"><table style="border-spacing: 
0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre 
class="lineno">1
 2</pre></td><td class="code"><pre><span class="gp">$ </span>bundle <span 
class="nb">exec </span>middleman build
 <span class="gp">$ </span>bundle <span class="nb">exec </span>rake check
-</pre></td></tr></tbody></table> </div> <p>The <code>rake check</code> task 
parses each HTML page in the <code>build</code> folder and checks it for common 
errors including 404s.</p><h2 id='license' 
class='header-anchors'>License</h2><p>Documentation is under a <a 
href="https://www.apache.org/licenses/LICENSE-2.0";>Apache License Version 
2.0</a>.</p></div></div></div></div><footer><div class="container"><div 
class="seperator"></div><div class="row"><div class="col-md-6 
footer-link-column"><div 
class="footer-link-column-row"><h4>Community</h4><ul><li><a 
href="//predictionio.incubator.apache.org/install/" 
target="blank">Download</a></li><li><a 
href="//predictionio.incubator.apache.org/" target="blank">Docs</a></li><li><a 
href="//github.com/apache/incubator-predictionio" 
target="blank">GitHub</a></li><li><a 
href="mailto:[email protected]"; 
target="blank">Subscribe to User Mailing List</a></li><li><a 
href="//stackoverflow.com/questions/tagged/predictionio" t
 arget="blank">Stackoverflow</a></li></ul></div></div><div class="col-md-6 
footer-link-column"><div 
class="footer-link-column-row"><h4>Contribute</h4><ul><li><a 
href="//predictionio.incubator.apache.org/community/contribute-code/" 
target="blank">Contribute</a></li><li><a 
href="//github.com/apache/incubator-predictionio" target="blank">Source 
Code</a></li><li><a href="//issues.apache.org/jira/browse/PIO" 
target="blank">Bug Tracker</a></li><li><a 
href="mailto:[email protected]"; 
target="blank">Subscribe to Development Mailing 
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footer-link-column"><p>Apache PredictionIO, PredictionIO, Apache, the Apache 
feather logo, and the Apache PredictionIO project logo are either registered 
trademarks or trademarks of The Apache Software Foundation in the United States 
and other countries.</p><p>All other marks mentioned may be trademarks or 
registered trademarks of their respective owners.</p></d
 iv></div><div class="row"><div class="col-md-12 footer-link-column"><a 
class="pull-right" 
href="http://incubator.apache.org/projects/predictionio.html";><img alt="Apache 
Incubator" src="/images/logos/apache_incubator-6954bd16.png"/></a><span>Apache 
PredictionIO is an effort undergoing incubation at The Apache Software 
Foundation (ASF), sponsored by the Apache Incubator. Incubation is required of 
all newly accepted projects until a further review indicates that the 
infrastructure, communications, and decision making process have stabilized in 
a manner consistent with other successful ASF projects. While incubation status 
is not necessarily a reflection of the completeness or stability of the code, 
it does indicate that the project has yet to be fully endorsed by the 
ASF.</span></div></div></div><div id="footer-bottom"><div 
class="container"><div class="row"><div class="col-md-12"><div 
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