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-<!DOCTYPE html><html><head><title>Downloading an Engine Template</title><meta 
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with Implicit Preference</span></a></li><li class="level-3"><a class="final" 
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Items by Blacklist in Query</span></a></li><li class="level-3"><a class="final" 
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 or/"><span>Batch Persistable Evaluator</span></a></li></ul></li><li 
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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 
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href="/templates/ecommercerecommendation/how-to/"><span>How-To</span></a></li><li
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with Rate Event</span></a></li><li class="level-3"><a class="final" 
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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><l
 i 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" 
 >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" 
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 unity/projects/"><span>Community Projects</span></a></li></ul></li><li 
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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="/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 
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 >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/sponsorship.html";><span>Sponsorship</span></a></li><li
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 >href="https://www.apache.org/foundation/thanks.html";><span>Thanks</span></a></li><li
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 >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="#">Getting Started</a><span class="spacer">&gt;</span></li><li><span 
 >class="last">Downloading an Engine Template</span></li></ul></div><div 
 >id="page-title"><h1>Downloading an Engine Template</h1></div></div><div id="t
 able-of-content-wrapper"><a id="edit-page-link" 
href="https://github.com/apache/predictionio/tree/livedoc/docs/manual/source/start/download.html.md";><img
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class="hidden-sm hidden xs"><ul><li><a href="#">Getting Started</a><span 
class="spacer">&gt;</span></li><li><span class="last">Downloading an Engine 
Template</span></li></ul></div><div id="page-title"><h1>Downloading an Engine 
Template</h1></div></div><div class="content"> <p>The first step to create a 
new engine is to browse <a href="/gallery/template-gallery">PredictionIO 
template gallery</a> where you could find Engine Templates for all kinds of 
machine learning tasks. Choose an engine template that matches your use case 
the best. You can further customize the engine later if you like.</p><p>To 
download a template, go to the template gallery, pick an engine template and 
click its name. You w
 ill be redirected to the engine template&#39;s GitHub repository. Clone the 
engine to your local machine to further customize it.</p><p>Please browse the 
<a href="/gallery/template-gallery">PredictionIO template gallery</a> to choose 
an engine template.</p></div></div></div></div><footer><div 
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class="level-2"><a class="final" href="/start/download/"><span>Downloading an 
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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></
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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 Algori
 thm</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" 
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Dashboard</span></a></li><li class="level-2"><a class="final" 
href="/evaluation/metricchoose/"><span>Choosing Evaluation Metrics</span>
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Items by Blacklist in Query</span></a></li><li class="level-3"><a class="final" 
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 valuator</span></a></li></ul></li><li class="level-2"><a class="expandible" 
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class="final" href="/templates/ecommercerecommendation/quickstart/"><span>Quick 
Start</span></a></li><li class="level-3"><a class="final" 
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 class="level-3"><a class="final" 
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with Rate Event</span></a></li><li class="level-3"><a class="final" 
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for Users</span></a></li><li class="level-3"><a class="final" 
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Intro</span></li></ul></div><div id="page-title"><h1>PredictionIO - A Quick 
Intro</h1></div></div><div class="content"> <h2 id='overview' 
class='header-anchors'>Overview</h2><p>PredictionIO consist of the following 
components:</p> <ul> <li><strong>PredictionIO platform</strong> - our open 
source machine learning stack for building, evaluating and deploying engines 
with machine learning algorithms.</li> <li
 ><strong>Event Server</strong> - our open source machine learning analytics 
 >layer for unifying events from multiple platforms</li> <li><strong>Template 
 >Gallery</strong> - the place for you to download engine templates for 
 >different type of machine learning applications</li> </ul> <p><img 
 >alt="PredictionIO Overview" 
 >src="/images/overview-multiengines-b703caac.png"/></p><h2 id='event-server' 
 >class='header-anchors'>Event Server</h2><p>In a common scenario, 
 >PredictionIO&#39;s <strong>Event Server</strong> continuously collects data 
 >from your application. A PredictionIO <strong>engine</strong> then builds 
 >predictive model(s) with one or more algorithms using the data. After it is 
 >deployed as a web service, it listens to queries from your application and 
 >respond with predicted results in real-time.</p><p><img alt="PredictionIO 
 >Single Engine Overview" 
 >src="/images/overview-singleengine-0a99200d.png"/></p><p><a 
 >href="/datacollection/">Event Server</a> collects data from your application, 
 >in
  real-time or in batch. It can also unify data that are related to your 
application from multiple platforms. After data is collected, it mainly serves 
two purposes:</p> <ol> <li>Provide data to Engine(s) for model training and 
evaluation</li> <li>Offer a unified view for data analysis</li> </ol> <p>Like a 
database server, Event Server can host multiple applications. Data are 
separated for each application by a unique <em>app_name</em>.</p><p>Once Event 
Server is launched, you can send data to a specific <em>app_name</em>, 
identified by an Access Key, through its <a 
href="/datacollection/eventapi/">Event API</a> with HTTP requests or with <a 
href="/sdk/">one of the SDKs</a>.</p><p>In some special case, you may want your 
engine to read data from another datastore instead of Event Server. It can be 
achieved by <a href="#">making some modifications</a>.</p><h2 id='engine' 
class='header-anchors'>Engine</h2><p>Engine is responsible for making 
prediction. It contains one or more machine le
 arning algorithms. An engine reads training data and build predictive 
model(s). It is then deployed as a web service. A deployed engine responds to 
prediction queries from your application through REST API in 
real-time.</p><p>PredictionIO&#39;s <a 
href="/gallery/template-gallery">template gallery</a> offers Engine Templates 
for all kinds of machine learning tasks. You can easily create one or more 
engines from these templates .</p><p>The components of a template, namely 
<strong>Data Source</strong>, <strong>Data Preparator</strong>, 
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class="level-2"><a class="final active" href="/start/"><span>A Quick 
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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" 
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Engine</span></a></li></ul></li><li class="level-1"><a class="expandible" 
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 a</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" 
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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 Metr
 ics</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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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="/te
 mplates/recommendation/evaluation/"><span>Evaluation 
Explained</span></a></li><li class="level-3"><a class="final" 
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class="level-3"><a class="final" 
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Serving</span></a></li><li class="level-3"><a class="final" 
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with Implicit Preference</span></a></li><li class="level-3"><a class="final" 
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Items by Blacklist in Query</span></a></li><li class="level-3"><a class="final" 
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 sistable 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" 
 >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 Tutorial
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Demo</span></a></li><li class="level-2"><a class="final" 
href="/demo/textclassification/"><span>Text Classification Engine 
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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 
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href="/community/projects/"><span>Community 
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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>A
 pache Homepage</span></a></li><li class="level-2"><a class="final" 
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id="page-title"><h1>PredictionIO - A Quick Intro</h1></div></div><div 
id="table-of-content-wrapper"><h5>On this page</h5><aside 
id="table-of-contents"><ul> <li> <a href="#overview">Overview</a> </li> <li> <a 
hre
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class="spacer">&gt;</span></li><li><span class="last">A Quick 
Intro</span></li></ul></div><div id="page-title"><h1>PredictionIO - A Quick 
Intro</h1></div></div><div class="content"> <h2 id='overview' 
class='header-anchors'>Overview</h2><p>PredictionIO consist of the following 
components:</p> <ul> <li><strong>PredictionIO platform</strong> - our open 
source machine learning stack for building, evaluating and deploying engines 
with machine learning algorithms.</li> <li><strong>Event Server</strong> - our 
open source machine learning analytics layer for u
 nifying events from multiple platforms</li> <li><strong>Template 
Gallery</strong> - the place for you to download engine templates for different 
type of machine learning applications</li> </ul> <p><img alt="PredictionIO 
Overview" src="/images/overview-multiengines-b703caac.png"/></p><h2 
id='event-server' class='header-anchors'>Event Server</h2><p>In a common 
scenario, PredictionIO&#39;s <strong>Event Server</strong> continuously 
collects data from your application. A PredictionIO <strong>engine</strong> 
then builds predictive model(s) with one or more algorithms using the data. 
After it is deployed as a web service, it listens to queries from your 
application and respond with predicted results in real-time.</p><p><img 
alt="PredictionIO Single Engine Overview" 
src="/images/overview-singleengine-0a99200d.png"/></p><p><a 
href="/datacollection/">Event Server</a> collects data from your application, 
in real-time or in batch. It can also unify data that are related to your 
application fro
 m multiple platforms. After data is collected, it mainly serves two 
purposes:</p> <ol> <li>Provide data to Engine(s) for model training and 
evaluation</li> <li>Offer a unified view for data analysis</li> </ol> <p>Like a 
database server, Event Server can host multiple applications. Data are 
separated for each application by a unique <em>app_name</em>.</p><p>Once Event 
Server is launched, you can send data to a specific <em>app_name</em>, 
identified by an Access Key, through its <a 
href="/datacollection/eventapi/">Event API</a> with HTTP requests or with <a 
href="/sdk/">one of the SDKs</a>.</p><p>In some special case, you may want your 
engine to read data from another datastore instead of Event Server. It can be 
achieved by <a href="/start/customize/">making some modifications</a>.</p><h2 
id='engine' class='header-anchors'>Engine</h2><p>Engine is responsible for 
making prediction. It contains one or more machine learning algorithms. An 
engine reads training data and build predictive m
 odel(s). It is then deployed as a web service. A deployed engine responds to 
prediction queries from your application through REST API in 
real-time.</p><p>PredictionIO&#39;s <a 
href="/gallery/template-gallery">template gallery</a> offers Engine Templates 
for all kinds of machine learning tasks. You can easily create one or more 
engines from these templates .</p><p>The components of a template, namely 
<strong>Data Source</strong>, <strong>Data Preparator</strong>, 
<strong>Algorithm(s)</strong>, and <strong>Serving</strong>, are all <a 
href="/start/customize/">customizable</a> for your specific 
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