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PredictionIO®</span></a></li></ul></li><li class="level-1"><a
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class="level-2"><a class="final" href="/start/"><span>A Quick
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class="level-2"><a class="final" href="/datacollection/"><span>Event Server
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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/anal
ytics/"><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>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/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
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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 c
lass="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
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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"
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ibute-sdk/"><span>Contribute a SDK</span></a></li><li class="level-2"><a
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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="/resource
s/upgrade/"><span>Upgrade Instructions</span></a></li><li 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><span class
="last">Apache PredictionIO® Documentation</span></li></ul></div><div
id="page-title"><h1>Welcome to Apache PredictionIO®!</h1></div></div><div
id="table-of-content-wrapper"><h5>On this page</h5><aside
id="table-of-contents"><ul> <li> <a href="#what-is-apache-predictionio">What is
Apache PredictionIO®?</a> </li> <li> <a href="#release-notes">Release
Notes</a> </li> <li> <a href="#licensing">Licensing</a> </li> </ul>
</aside><hr/><a id="edit-page-link"
href="https://github.com/apache/predictionio/tree/livedoc/docs/manual/source/index.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><span class="last">Apache PredictionIO®
Documentation</span></li></ul></div><div id="page-title"><h1>Welcome to Apache
PredictionIO®!</h1></div></div><div class="content"> <h2
id='what-is-apache-predictionio®?' class='header-anchors'>What is Apache
Predictio
nIO®?</h2><p>Apache PredictionIO® is an <strong>open source Machine Learning
Server</strong> built on top of a state-of-the-art open source stack for
developers and data scientists to create predictive engines for any machine
learning task. It lets you:</p> <ul> <li>quickly build and deploy an engine as
a web service on production with <a
href="/gallery/template-gallery">customizable templates</a>;</li> <li>respond
to dynamic queries in <strong>real-time</strong> once deployed as a web
service;</li> <li>evaluate and tune multiple engine variants
systematically;</li> <li>unify data from multiple platforms in batch or in
real-time for comprehensive predictive analytics;</li> <li>speed up machine
learning modeling with systematic processes and pre-built evaluation
measures;</li> <li>support machine learning and data processing libraries such
as Spark MLLib and OpenNLP;</li> <li>implement your own machine learning models
and seamlessly incorporate them into your engine;</li> <li>simpl
ify data infrastructure management.</li> </ul> <p>Apache PredictionIO® can be
<a href="/install/">installed</a> as a full machine learning stack, bundled
with <strong>Apache Spark</strong>, <strong>MLlib</strong>,
<strong>HBase</strong>, <strong>Spray</strong> and
<strong>Elasticsearch</strong>, which simplifies and accelerates scalable
machine learning infrastructure management.</p> <table><thead> <tr> <th>Getting
Started</th> <th>Developer Guides</th> <th>Machine Learning Education and
Usage</th> <th>PredictionIO SDKs</th> </tr> </thead><tbody> <tr> <td><a
href="/start/">Quick Intro</a></td> <td><a href="/system/">System
Architecture</a></td> <td><a href="/demo/tapster/">Demo: Recommending
Comics</a></td> <td><a href="/sdk/java/">Java</a></td> </tr> <tr> <td><a
href="/install/">Installation Guide</a></td> <td><a
href="/datacollection/">Event Server Overview</a></td> <td><a
href="/demo/textclassification/">Text Classification</a></td> <td><a
href="/sdk/php/">PHP</a></td> </tr> <tr
> <td><a href="/start/download/">Downloading Template</a></td> <td><a
> href="/datacollection/eventapi/">Collecting Data</a></td> <td><a
> href="/demo/community/">Community Contributed Demo</a></td> <td><a
> href="/sdk/python/">Python</a></td> </tr> <tr> <td><a
> href="/start/deploy/">Deploying an Engine</a></td> <td><a
> href="/customize/">Learning DASE</a></td> <td><a
> href="/machinelearning/dimensionalityreduction/">Dimensionality
> Reduction</a></td> <td><a href="/sdk/ruby/">Ruby</a></td> </tr> <tr> <td><a
> href="/start/customize/">Customizing an Engine</a></td> <td><a
> href="/customize/dase/">Implementing DASE</a></td> <td></td> <td><a
> href="/sdk/community/">Community Contributed</a></td> </tr> <tr> <td><a
> href="/appintegration/">App Integration Overview</a></td> <td><a
> href="/evaluation/">Evaluation Overview</a></td> <td></td> <td></td> </tr>
> <tr> <td></td> <td><a href="/resources/intellij/">Intellij IDEA
> Guide</a></td> <td></td> <td></td> </tr> <tr> <td></td> <td><a
> href="/api/current/#pack
age">Scala API</a></td> <td></td> <td></td> </tr> </tbody></table> <h2
id='release-notes' class='header-anchors'>Release Notes</h2><p>A summary of
changes in each release can be found <a
href="https://github.com/apache/predictionio/blob/master/RELEASE.md";>here</a>.</p><h2
id='licensing' class='header-anchors'>Licensing</h2><p>Apache PredictionIO®
is licensed under the Apache License, Version 2.0. See <a
href="https://github.com/apache/predictionio/blob/master/LICENSE.txt";>LICENSE</a>
for the full license text.</p></div></div></div></div><footer><div
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PredictionIO®!</h1></div></div><div class="content"> <h2
id='what-is-apache-predictionio®?' class='header-anchors'>What is Apache
Predictio
nIO®?</h2><p>Apache PredictionIO® is an <strong>open source Machine Learning
Server</strong> built on top of a state-of-the-art open source stack for
developers and data scientists to create predictive engines for any machine
learning task. It lets you:</p> <ul> <li>quickly build and deploy an engine as
a web service on production with <a
href="/gallery/template-gallery">customizable templates</a>;</li> <li>respond
to dynamic queries in <strong>real-time</strong> once deployed as a web
service;</li> <li>evaluate and tune multiple engine variants
systematically;</li> <li>unify data from multiple platforms in batch or in
real-time for comprehensive predictive analytics;</li> <li>speed up machine
learning modeling with systematic processes and pre-built evaluation
measures;</li> <li>support machine learning and data processing libraries such
as Spark MLLib and OpenNLP;</li> <li>implement your own machine learning models
and seamlessly incorporate them into your engine;</li> <li>simpl
ify data infrastructure management.</li> </ul> <p>Apache PredictionIO® can be
<a href="/install/">installed</a> as a full machine learning stack, bundled
with <strong>Apache Spark</strong>, <strong>MLlib</strong>,
<strong>HBase</strong>, <strong>Spray</strong> and
<strong>Elasticsearch</strong>, which simplifies and accelerates scalable
machine learning infrastructure management.</p> <table><thead> <tr> <th>Getting
Started</th> <th>Developer Guides</th> <th>Machine Learning Education and
Usage</th> <th>PredictionIO SDKs</th> </tr> </thead><tbody> <tr> <td><a
href="/start/">Quick Intro</a></td> <td><a href="/system/">System
Architecture</a></td> <td><a href="/demo/tapster/">Demo: Recommending
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href="/sdk/php/">PHP</a></td> </tr> <tr
> <td><a href="/start/download/">Downloading Template</a></td> <td><a
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> href="/sdk/python/">Python</a></td> </tr> <tr> <td><a
> href="/start/deploy/">Deploying an Engine</a></td> <td><a
> href="/customize/">Learning DASE</a></td> <td><a
> href="/machinelearning/dimensionalityreduction/">Dimensionality
> Reduction</a></td> <td><a href="/sdk/ruby/">Ruby</a></td> </tr> <tr> <td><a
> href="/start/customize/">Customizing an Engine</a></td> <td><a
> href="/customize/dase/">Implementing DASE</a></td> <td></td> <td><a
> href="/sdk/community/">Community Contributed</a></td> </tr> <tr> <td><a
> href="/appintegration/">App Integration Overview</a></td> <td><a
> href="/evaluation/">Evaluation Overview</a></td> <td></td> <td></td> </tr>
> <tr> <td></td> <td><a href="/resources/intellij/">Intellij IDEA
> Guide</a></td> <td></td> <td></td> </tr> <tr> <td></td> <td><a
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age">Scala API</a></td> <td></td> <td></td> </tr> </tbody></table> <h2
id='release-notes' class='header-anchors'>Release Notes</h2><p>A summary of
changes in each release can be found <a
href="https://github.com/apache/predictionio/blob/livedoc/RELEASE.md";>here</a>.</p><h2
id='licensing' class='header-anchors'>Licensing</h2><p>Apache PredictionIO®
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