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-<!DOCTYPE html><html><head><title>Submitting a Template to Template 
Gallery</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="Submitting a Template to Template 
Gallery"/><link rel="canonical" 
href="https://predictionio.apache.org/community/submit-template/"/><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-eccfc6cb.css" 
rel="stylesheet" type="text/css"/><script 
src="//cdnjs.cloudflare.com/ajax/libs/html5shiv/3.7.2/html5shiv.min.js"></scrip
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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.apache.org/";><img alt="Apache 
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" 
href="/gallery/template-gallery">TEMPLATES</a> <a class="pill right" 
href="//github.com/apache/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>Submit your Engine 
as a Template</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-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 You
 r 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" 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><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="expandi
 ble" 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="/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="/ev
 aluation/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="/temp
 lates/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/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</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" 
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 active" 
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" 
href="/community/contribute-webhook/"><span>Contribute a 
Webhook</span></a></li><li cla
 ss="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="/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="leve
 l-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="#">Engine Template Gallery</a><span 
class="spacer">&gt;</span></li><li><span class="last">Submit your Engine as a 
Template</span></li></ul></div><div id="page-title"><h1>Submit
 ting a Template to Template Gallery</h1></div></div><div 
id="table-of-content-wrapper"><h5>On this page</h5><aside 
id="table-of-contents"><ul> <li> <a href="#template-guidelines">Template 
Guidelines</a> </li> <li> <a href="#how-to-submit">How to submit</a> </li> 
</ul> </aside><hr/><a id="edit-page-link" 
href="https://github.com/apache/predictionio/tree/livedoc/docs/manual/source/community/submit-template.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="#">Engine Template 
Gallery</a><span class="spacer">&gt;</span></li><li><span class="last">Submit 
your Engine as a Template</span></li></ul></div><div 
id="page-title"><h1>Submitting a Template to Template 
Gallery</h1></div></div><div class="content"> <h2 id='template-guidelines' 
class='header-anchors'>Template Guidelines</h2> <ul> <li><p>Please give your 
template and GitHub repo a meaning
 ful name (for example, My-MLlibKMeansClustering-Template).</p></li> 
<li><p>Please tag your repo for each released version. This is required by 
Template Gallery.</p><p>For example, tag the release with v0.1.0:</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 tag -a v0.1.0 -m <span 
class="s1">'version 0.1.0'</span>
+<!DOCTYPE html><html><head><title>Submitting a Template to Template 
Gallery</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="Submitting a Template to Template 
Gallery"/><link rel="canonical" 
href="https://predictionio.apache.org/community/submit-template/"/><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-eccfc6cb.css" 
rel="stylesheet" type="text/css"/><script 
src="//cdnjs.cloudflare.com/ajax/libs/html5shiv/3.7.2/html5shiv.min.js"></scrip
 t><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.apache.org/";><img alt="Apache 
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" 
href="/gallery/template-gallery">TEMPLATES</a> <a class="pill right" 
href="//github.com/apache/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>Submit your Engine 
as a Template</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-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 You
 r 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" 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 
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class="level-1"><a class="expandible" href="#"><span>Customizing an 
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 ation/metricchoose/"><span>Choosing Evaluation Metrics</span></a></li><li 
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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 
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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 
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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 
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href="/templates/ecommercerecommendation/adjust-score/"><span>Adjust 
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href="#"><span>Similar Product</span></a><ul><li class="level-3"><a 
class="final" href="/templates/similarproduct/quickstart/"><spa
 n>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 
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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 
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href="#"><sp
 an>Classification</span></a><ul><li class="level-3"><a class="final" 
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Start</span></a></li><li class="level-3"><a class="final" 
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 g a Template to Template Gallery</h1></div></div><div 
id="table-of-content-wrapper"><h5>On this page</h5><aside 
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id="page-title"><h1>Submitting a Template to Template 
Gallery</h1></div></div><div class="content"> <h2 id='template-guidelines' 
class='header-anchors'>Template Guidelines</h2> <ul> <li><p>Please give your 
template and GitHub repo a meaningful
  name (for example, My-MLlibKMeansClustering-Template).</p></li> <li><p>Please 
tag your repo for each released version. This is required by Template 
Gallery.</p><p>For example, tag the release with v0.1.0:</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 tag -a v0.1.0 -m <span 
class="s1">'version 0.1.0'</span>
 </pre></td></tr></tbody></table> </div></li> <li><p>For clarity, the engine 
template directory structure should be:</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
@@ -35,7 +35,7 @@ template.json
     <span class="no">license: (License)</span>
     <span class="no">status: (e.g. alpha, stable or requested (under 
development))</span>
     <span class="no">pio_min_version: (Minimum version of PredictionIO to run 
your template)</span>
-</pre></td></tr></tbody></table> </div> <ul> <li>Submit your changes via 
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http://git-wip-us.apache.org/repos/asf/predictionio-site/blob/b1f44c15/customize/dase/index.html
----------------------------------------------------------------------
diff --git a/customize/dase/index.html b/customize/dase/index.html
index 3836e33..1265846 100644
--- a/customize/dase/index.html
+++ b/customize/dase/index.html
@@ -1,4 +1,4 @@
-<!DOCTYPE html><html><head><title>Implementing DASE</title><meta 
charset="utf-8"/><meta content="IE=edge,chrome=1" 
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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="/appintegratio
 n/"><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" 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><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 active" 
 >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 cl
 ass="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/recommen
 dation/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 
Evaluat
 or</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" h
 ref="/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</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" 
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" 
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 Pro
 jects</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="#">Customizing an Engine</a><span 
class="spacer">&gt;</span></li><li><span class="last">Implement 
DASE</span></li></ul></div><div id="page-title"><h1>Implementing 
DASE</h1></div></div><div id="table-of-content-wrapper"><h5>On this 
page</h5><aside id="ta
 ble-of-contents"><ul> <li> <a href="#datasource">DataSource</a> <ul> <li> <a 
href="#readtraining">readTraining()</a> </li> <li> <a 
href="#using-peventstore-engine-api">Using PEventStore Engine API</a> </li> 
</ul> </li> <li> <a href="#preparator">Preparator</a> <ul> <li> <a 
href="#prepare">prepare()</a> </li> </ul> </li> <li> <a 
href="#algorithm">Algorithm</a> <ul> <li> <a href="#train">train()</a> </li> 
<li> <a href="#predict">predict()</a> </li> <li> <a 
href="#p2lalgorithm">P2LAlgorithm</a> </li> <li> <a 
href="#palgorithm">PAlgorithm</a> </li> <li> <a 
href="#using-leventstore-engine-api-in-predict">using LEventStore Engine API in 
predict()</a> </li> </ul> </li> <li> <a href="#serving">Serving</a> <ul> <li> 
<a href="#serve">serve()</a> </li> </ul> </li> </ul> </aside><hr/><a 
id="edit-page-link" 
href="https://github.com/apache/predictionio/tree/livedoc/docs/manual/source/customize/dase.html.md.erb";><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="#">Customizing an Engine</a><span 
class="spacer">&gt;</span></li><li><span class="last">Implement 
DASE</span></li></ul></div><div id="page-title"><h1>Implementing 
DASE</h1></div></div><div class="content"> <p>This section gives you an 
overview of DASE components and how to implement them. You will find links to 
some engine templates for more concrete examples.</p><h1 id='datasource' 
class='header-anchors'>DataSource</h1><p>DataSource reads and selects useful 
data from the Event Store (data store of the Event Server) and returns 
TrainingData.</p><h2 id='readtraining()' 
class='header-anchors'>readTraining()</h2><p>You need to implment 
readTraining() of <a 
href="https://predictionio.apache.org/api/current/#org.apache.predictionio.controller.PDataSource";>PDataSource</a>,
 where you can use the <a 
href="https://predictionio.apache.org/api/current/#org.apache.predictionio.data.store.PEve
 ntStore$">PEventStore Engine API</a> to read the events and create the 
TrainingData based on the events.</p><p>The following code example reads user 
&quot;view&quot; and &quot;buy&quot; item events, filters specific type of 
events for future processing and returns TrainingData accordingly.</p><div 
class="highlight scala"><table style="border-spacing: 0"><tbody><tr><td 
class="gutter gl" style="text-align: right"><pre class="lineno">1
+<!DOCTYPE html><html><head><title>Implementing DASE</title><meta 
charset="utf-8"/><meta content="IE=edge,chrome=1" 
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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.apache.org/";><img alt="Apache 
PredictionIO" id="logo" 
src="/images/logos/logo-ee2b9bb3.png"/></a><span>®</span></div><div 
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col-xs-11"><div class="hidden-md hidde
 n-lg" id="mobile-page-heading-wrapper"><p>PredictionIO Docs</p><h4>Implement 
DASE</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 
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src="/images/icons/search-glass-704bd4ff.png"/><div class="search-box"><img 
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hidden-lg"></div></div></div></div><div id="page" class="container-fluid"><div 
class="row"><div id="left-menu-wrapper" class="col-md-3"><nav id="nav-m
 ain"><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="/appintegratio
 n/"><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" 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><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 active" 
 >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 cl
 ass="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</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 
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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/recommendat
 ion/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/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</span></a><ul><li class="level-3"><a 
class="final" h
 ref="/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" 
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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 
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 class="level-2"><a class="final" 
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 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="#">Customizing an Engine</a><span 
class="spacer">&gt;</span></li><li><span class="last">Implement 
DASE</span></li></ul></div><div id="page-title"><h1>Implementing 
DASE</h1></div></div><div id="table-of-content-wrapper"><h5>On this 
page</h5><aside id="table
 -of-contents"><ul> <li> <a href="#datasource">DataSource</a> <ul> <li> <a 
href="#readtraining">readTraining()</a> </li> <li> <a 
href="#using-peventstore-engine-api">Using PEventStore Engine API</a> </li> 
</ul> </li> <li> <a href="#preparator">Preparator</a> <ul> <li> <a 
href="#prepare">prepare()</a> </li> </ul> </li> <li> <a 
href="#algorithm">Algorithm</a> <ul> <li> <a href="#train">train()</a> </li> 
<li> <a href="#predict">predict()</a> </li> <li> <a 
href="#p2lalgorithm">P2LAlgorithm</a> </li> <li> <a 
href="#palgorithm">PAlgorithm</a> </li> <li> <a 
href="#using-leventstore-engine-api-in-predict">using LEventStore Engine API in 
predict()</a> </li> </ul> </li> <li> <a href="#serving">Serving</a> <ul> <li> 
<a href="#serve">serve()</a> </li> </ul> </li> </ul> </aside><hr/><a 
id="edit-page-link" 
href="https://github.com/apache/predictionio/tree/livedoc/docs/manual/source/customize/dase.html.md.erb";><img
 src="/images/icons/edit-pencil-d6c1bb3d.png"/>Edit this page</a></div><div 
class="co
 ntent-header hidden-sm hidden-xs"><div id="breadcrumbs" class="hidden-sm 
hidden xs"><ul><li><a href="#">Customizing an Engine</a><span 
class="spacer">&gt;</span></li><li><span class="last">Implement 
DASE</span></li></ul></div><div id="page-title"><h1>Implementing 
DASE</h1></div></div><div class="content"> <p>This section gives you an 
overview of DASE components and how to implement them. You will find links to 
some engine templates for more concrete examples.</p><h1 id='datasource' 
class='header-anchors'>DataSource</h1><p>DataSource reads and selects useful 
data from the Event Store (data store of the Event Server) and returns 
TrainingData.</p><h2 id='readtraining()' 
class='header-anchors'>readTraining()</h2><p>You need to implment 
readTraining() of <a 
href="https://predictionio.apache.org/api/current/#org.apache.predictionio.controller.PDataSource";>PDataSource</a>,
 where you can use the <a 
href="https://predictionio.apache.org/api/current/#org.apache.predictionio.data.store.PEventS
 tore$">PEventStore Engine API</a> to read the events and create the 
TrainingData based on the events.</p><p>The following code example reads user 
&quot;view&quot; and &quot;buy&quot; item events, filters specific type of 
events for future processing and returns TrainingData accordingly.</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
@@ -211,7 +211,7 @@
         <span class="n">logger</span><span class="o">.</span><span 
class="n">error</span><span class="o">(</span><span class="n">s</span><span 
class="s">"Error when read recent events: ${e}"</span><span class="o">)</span>
         <span class="k">throw</span> <span class="n">e</span>
     <span class="o">}</span>
-</pre></td></tr></tbody></table> </div> <p>Example:</p> <ul> <li><a 
href="/templates/ecommercerecommendation/dase#algorithm">Algorithm of 
E-Commerce Recommendation template</a>: LEventStore.findByEntity() is used to 
retrieve all items seen by the user and filter them from recommendation in 
predict().</li> </ul> <h1 id='serving' class='header-anchors'>Serving</h1><h2 
id='serve()' class='header-anchors'>serve()</h2><p>You need to implement the 
serve() method of the class <a 
href="https://predictionio.apache.org/api/current/#org.apache.predictionio.controller.LServing";>LServing</a>.
 The serve() method processes predicted result. It is also responsible for 
combining multiple predicted results into one if you have more than one 
predictive model.</p><p>Example:</p> <ul> <li><a 
href="/templates/similarproduct/dase/#serving">Serving of Similar Product 
Template</a>: It simply returns the predicted result</li> <li><a 
href="/templates/similarproduct/multi-events-multi-algos/">Serving of multi-
 algorithm examples of Similar Product Template</a>: It combines the result of 
multiple algorithms and return</li> </ul> </div></div></div></div><footer><div 
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+</pre></td></tr></tbody></table> </div> <p>Example:</p> <ul> <li><a 
href="/templates/ecommercerecommendation/dase#algorithm">Algorithm of 
E-Commerce Recommendation template</a>: LEventStore.findByEntity() is used to 
retrieve all items seen by the user and filter them from recommendation in 
predict().</li> </ul> <h1 id='serving' class='header-anchors'>Serving</h1><h2 
id='serve()' class='header-anchors'>serve()</h2><p>You need to implement the 
serve() method of the class <a 
href="https://predictionio.apache.org/api/current/#org.apache.predictionio.controller.LServing";>LServing</a>.
 The serve() method processes predicted result. It is also responsible for 
combining multiple predicted results into one if you have more than one 
predictive model.</p><p>Example:</p> <ul> <li><a 
href="/templates/similarproduct/dase/#serving">Serving of Similar Product 
Template</a>: It simply returns the predicted result</li> <li><a 
href="/templates/similarproduct/multi-events-multi-algos/">Serving of multi-
 algorithm examples of Similar Product Template</a>: It combines the result of 
multiple algorithms and return</li> </ul> </div></div></div></div><footer><div 
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