Repository: mahout Updated Branches: refs/heads/asf-site a9262d54b -> 6d9258956
http://git-wip-us.apache.org/repos/asf/mahout/blob/6d925895/users/recommender/intro-cooccurrence-spark.html ---------------------------------------------------------------------- diff --git a/users/recommender/intro-cooccurrence-spark.html b/users/recommender/intro-cooccurrence-spark.html index 6c1f9d0..d905560 100644 --- a/users/recommender/intro-cooccurrence-spark.html +++ b/users/recommender/intro-cooccurrence-spark.html @@ -28,15 +28,7 @@ </head> -<script> - (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){ - (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o), - m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m) - })(window,document,'script','//www.google-analytics.com/analytics.js','ga'); - - ga('create', 'UA-98314020-1', 'auto'); - ga('send', 'pageview'); -</script> + <body> <nav class="navbar navbar-expand-lg navbar-light bg-light navbar-mahout"> @@ -44,7 +36,7 @@ <div class="container"> <a class="navbar-brand" href="/"> - <img src="/assets/mahout-logo-blue.svg" alt=""> + <img src="/assets/mahout-logo-blue.svg" alt=""> </a> <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation"> @@ -53,38 +45,60 @@ <div class="collapse navbar-collapse" id="navbarSupportedContent"> - <ul class="navbar-nav ml-auto"> + <div class="navbar-nav ml-auto"> - <!-- Download --> + <!-- Quick Start --> <li class="nav-item"> - <a class="nav-link" href="/general/downloads">Download</a> + <a class="nav-link" href="/docs/latest" >Overview</a> </li> - <li class="nav-item"> - <a class="nav-link" href="/docs/latest/index.html">Overview</a> + <li class="nav-item dropdown"> + <a class="nav-link dropdown-toggle" href="" id="navbarDropdownMenuLink" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Key Concepts</a> + <div class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink"> + <a class="dropdown-item" href="/docs/latest/index.html">Mahout Overview</a> + <div class="dropdown-divider"></div> + <h6 class="dropdown-header">Scala DSL</h6> + <a class="dropdown-item" href="/docs/latest/mahout-samsara/in-core-reference.html">In-core Reference</a> + <a class="dropdown-item" href="/docs/latest/mahout-samsara/out-of-core-reference.html">Out-of-core Reference</a> + <a class="dropdown-item" href="/docs/latest/mahout-samsara/faq.html">Samsara FAQ</a> + <div class="dropdown-divider"></div> + <h6 class="dropdown-header">Distributed Engine Bindings</h6> + <a class="dropdown-item" href="/docs/latest/distributed/spark-bindings/">Spark Bindings</a> + <a class="dropdown-item" href="/docs/latest/distributed/flink-bindings.html">Flink Bindings</a> + <a class="dropdown-item" href="/docs/latest/distributed/flink-bindings.html">H20 Bindings</a> + <!--<div class="dropdown-divider"></div> + <h6 class="dropdown-header">Native Solvers</h6> + <a class="dropdown-item" href="/docs/latest/native-solvers/viennacl.html">ViennaCL</a></li> + <a class="dropdown-item" href="/docs/latest/native-solvers/viennacl-omp.html">ViennaCL-OMP</a></li> + <a class="dropdown-item" href="/docs/latest/native-solvers/cuda.html">CUDA</a></li>--> + </div> </li> - <!-- Algorithms (Samsara / MR) --> <li class="nav-item dropdown"> - <a class="nav-link dropdown-toggle" href="" id="navbarDropdownMenuLink" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Algorithms</a> + <a class="nav-link dropdown-toggle" href="" id="navbarDropdownMenuLink" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Tutorial</a> <div class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink"> - <a class="dropdown-item" href="/docs/latest/algorithms/linear-algebra">Distributed Linear Algebra</a> - <a class="dropdown-item" href="/docs/latest/algorithms/preprocessors">Preprocessors</a> - <a class="dropdown-item" href="/docs/latest/algorithms/regression">Regression</a> - <a class="dropdown-item" href="/docs/latest/algorithms/clustering">Clustering</a> - <a class="dropdown-item" href="/docs/latest/algorithms/recommenders">Recommenders</a> + <div class="dropdown-divider"></div> + <h6 class="dropdown-header">Recommenders</h6> + <a class="dropdown-item" href="/docs/latest/tutorials/cco-lastfm">CCO Example with Last.FM Data</a> + <a class="dropdown-item" href="/docs/latest/tutorials/intro-cooccurrence-spark">Introduction to Cooccurrence in Spark</a> + <div class="dropdown-divider"></div> + <h6 class="dropdown-header">Mahout Samsara</h6> + <a class="dropdown-item" href="/docs/latest/tutorials/samsara/play-with-shell.html">Playing with Samsara in Spark Shell</a> + <a class="dropdown-item" href="/docs/latest/tutorials/samsara/playing-with-samsara-flink-batch.html">Playing with Samsara in Flink Batch</a> + <a class="dropdown-item" href="/docs/latest/tutorials/samsara/classify-a-doc-from-the-shell.html">Text Classification (Shell)</a> + <a class="dropdown-item" href="/docs/latest/tutorials/samsara/spark-naive-bayes.html">Spark Naive Bayes</a> + <div class="dropdown-divider"></div> + <h6 class="dropdown-header">Misc</h6> + <a class="dropdown-item" href="/docs/latest/tutorials/misc/mahout-in-zeppelin">Mahout in Apache Zeppelin</a> + <a class="dropdown-item" href="/docs/latest/tutorials/misc/contributing-algos">How To Contribute a New Algorithm</a> + <a class="dropdown-item" href="/docs/latest/tutorials/misc/how-to-build-an-app.html">How To Build An App</a> <div class="dropdown-divider"></div> <h6 class="dropdown-header">Deprecated</h6> - <a class="dropdown-item" href="/docs/latest/algorithms/map-reduce">MapReduce <i>(deprecated)</i></a> + <a class="dropdown-item" href="/docs/latest/tutorials/map-reduce">MapReduce</a> </div> - <!--<a class="dropdown-item" href="/docs/latest/algorithms/recommenders/recommender-overview.html">Reccomender Overview</a></li> Do we still need? seems like short version of next post--> - <!-- - <a class="dropdown-item" href="/docs/latest/algorithms/recommenders/intro-cooccurrence-spark.html">Intro to Coocurrence With Spark</a></li> - <li role="separator" class="divider"></li> - <li><span> <a href="/docs/latest/algorithms/map-reduce"><b>MapReduce</b> (deprecated)</a><span></li> - - --> </li> + + <!-- Algorithms (Samsara / MR) --> <li class="nav-item dropdown"> <a class="nav-link dropdown-toggle" href="" id="navbarDropdownMenuLink" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Algorithms</a> @@ -98,91 +112,60 @@ <h6 class="dropdown-header">Deprecated</h6> <a class="dropdown-item" href="/docs/latest/algorithms/map-reduce">MapReduce <i>(deprecated)</i></a> </div> - <!--<a class="dropdown-item" href="/docs/latest/algorithms/recommenders/recommender-overview.html">Reccomender Overview</a></li> Do we still need? seems like short version of next post--> - <!-- - <a class="dropdown-item" href="/docs/latest/algorithms/recommenders/intro-cooccurrence-spark.html">Intro to Coocurrence With Spark</a></li> - <li role="separator" class="divider"></li> - <li><span> <a href="/docs/latest/algorithms/map-reduce"><b>MapReduce</b> (deprecated)</a><span></li> - --> - </li> + <!--<a class="dropdown-item" href="/docs/latest/algorithms/recommenders/recommender-overview.html">Reccomender Overview</a></li> Do we still need? seems like short version of next post--> + <!-- + <a class="dropdown-item" href="/docs/latest/algorithms/recommenders/intro-cooccurrence-spark.html">Intro to Coocurrence With Spark</a></li> + <li role="separator" class="divider"></li> + <li><span> <a href="/docs/latest/algorithms/map-reduce"><b>MapReduce</b> (deprecated)</a><span></li> - <!-- Developers --> - <li class="nav-item dropdown"> - <a class="nav-link dropdown-toggle" href="" id="navbarDropdownMenuLink" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Developers</a> - <div class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink"> - <a class="dropdown-item" href="/developers/developer-resources.html">Developer Resources</a> - <a class="dropdown-item" href="/developers/buildingmahout">Building Mahout from Source</a> - <a class="dropdown-item" href="/developers/issue-tracker">Issues Tracking (JIRA)</a> - <!-- <a class="dropdown-item" href="/developers/patch-check-list/">Patch Check List</a> going to github template --> - <!-- <a class="dropdown-item" href="/developers/reference/">References</a> a lot of overlap with books, talks, etc. page --> - <a class="dropdown-item" href="/developers/release-notes/">Release Notes</a> - <!-- <a class="dropdown-item" href="/developers/thirdparty-dependencies/">Third Party Dependencies</a> is our site the reasonable place for this? --> - 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<h6 class="dropdown-header">Release</h6> - <a class="dropdown-item" href="/docs/0.13.0">0.13.0</a> - <div class="dropdown-divider"></div> - <h6 class="dropdown-header">Latest Snapshot (Development)</h6> - <a class="dropdown-item" href="/docs/latest">0.13.1-SNAPSHOT</a> + <a class="dropdown-item" href="/docs/0.13.0/api/docs/">0.13.0</a> </div> </li> - <!-- Community --> + <!-- Apache --> <li class="nav-item dropdown"> - <a class="nav-link dropdown-toggle" href="" id="navbarDropdownMenuLink" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Community</a> - <div class="dropdown-menu dropdown-menu-right"> - <!--<a class="dropdown-item" href="/community/history/">History of the Apache Mahout Project</a>--> - <!--<a class="dropdown-item" href="/community/blogs/">Blog Posts About Mahout</a>--> - <!--<a class="dropdown-item" href="/community/recent-upcoming-talks/">Recent and Upcoming Talks</a>--> - <!-- <a class="dropdown-item" href="/community/books-tutorials-and-talks/">Books Tutorials and Talks</a> --> - <!-- <a class="dropdown-item" href="/community/faq/">FAQ</a> needs a lot of updating --> - <a class="dropdown-item" href="/developers/gsoc">GSoC</a> - <!-- Is OK- updated Map/Reduce verbage to reflect Samsara --> - <!-- <a class="dropdown-item" href="/community/mahout-benchmarks/">Mahout Benchmarks</a> These are old, Keep them? --> - <!-- <a class="dropdown-item" href="/community/mahout-wiki/">Mahout Wiki</a> at very least needs links cleanedup - do we still want this even?--> - <a class="dropdown-item" href="/general/mailing-lists">Mailing Lists</a> - <!-- Clean and pretty --> - <!-- <a class="dropdown-item" href="/community/powered-by-mahout/">Powered By Mahout</a> needs update --> - <a class="dropdown-item" href="/general/privacy-policy">Privacy Policy</a> - <!-- <a class="dropdown-item" href="/community/professional-support/">Professional Support</a> update if we even want to keep --> - <a class="dropdown-item" href="/general/who-we-are">Who We Are</a> - <!-- nikolai needs to add himself --> + <a class="nav-link dropdown-toggle" href="" id="navbarDropdownMenuLink" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Apache</a> + <div class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink"> + <a class="dropdown-item" href="http://www.apache.org/foundation/how-it-works.html";>Apache Software Foundation</a> + <a class="dropdown-item" href="http://www.apache.org/licenses/";>Apache License</a> + <a class="dropdown-item" href="http://www.apache.org/foundation/sponsorship.html";>Sponsorship</a> + <a class="dropdown-item" href="http://www.apache.org/foundation/thanks.html";>Thanks</a> </div> </li> - <!-- GitHub --> - <li class="nav-item"> - <a class="nav-link" href="http://github.com/apache/mahout";><i class="fa fa-github"></i></a> - </li> - </ul> - <!-- <form class="form-inline my-2 my-lg-0"> - <input class="form-control mr-sm-2" type="text" placeholder="Search" aria-label="Search"> - <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button> - </form> --> + <!--<form class="navbar-form navbar-left">--> + <!--<div class="form-group">--> + <!--<input type="text" class="form-control" placeholder="Search">--> + <!--</div>--> + <!--<button type="submit" class="btn btn-default">Submit</button>--> + <!--</form>--> + <!--<ul class="nav navbar-nav navbar-right">--> + <!--<a class="dropdown-item" href="http://github.com/apache/mahout";>Github</a></li>--> - </div> - </div> + <!--</ul>--> + </div><!-- /.navbar-collapse --> + </div> </nav> - <h1 id="building-a-correlated-cross-occurrence-cco-recommenders-with-the-mahout-cli">Building a Correlated Cross-Occurrence (CCO) Recommenders with the Mahout CLI</h1> + <div class="container mt-5 pb-4"> + + <div class="row"> + + <div class="col-lg-8"> + <h1 id="building-a-correlated-cross-occurrence-cco-recommenders-with-the-mahout-cli">Building a Correlated Cross-Occurrence (CCO) Recommenders with the Mahout CLI</h1> <p>Mahoutâs CCO algorithm is one of a new breed of âMultimodalâ recommenders that can use input of many types in very flexible ways.</p> @@ -654,6 +637,13 @@ on the popularity field. If we use the ecom example but use the query to get â <li>In the examples we have used space delimited strings for lists of IDs in indicators and in queries. It may be better to use arrays of strings if your storage system and search engine support them. For instance Solr allows multi-valued fields, which correspond to arrays.</li> </ol> + </div> + + + </div> + +</div> + <footer class="footer bg-light"> <div class="container text-center small"> http://git-wip-us.apache.org/repos/asf/mahout/blob/6d925895/users/recommender/quickstart.html ---------------------------------------------------------------------- diff --git a/users/recommender/quickstart.html b/users/recommender/quickstart.html index 8087215..381d283 100644 --- a/users/recommender/quickstart.html +++ b/users/recommender/quickstart.html @@ -7,7 +7,7 @@ <meta name="viewport" content="width=device-width, initial-scale=1"> <title> - Recommender Quickstart + Recommender Overview </title> @@ -28,15 +28,7 @@ </head> -<script> - (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){ - (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o), - m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m) - })(window,document,'script','//www.google-analytics.com/analytics.js','ga'); - ga('create', 'UA-98314020-1', 'auto'); - ga('send', 'pageview'); -</script> <body> <nav class="navbar navbar-expand-lg navbar-light bg-light navbar-mahout"> @@ -44,7 +36,7 @@ <div class="container"> <a class="navbar-brand" href="/"> - <img src="/assets/mahout-logo-blue.svg" alt=""> + <img src="/assets/mahout-logo-blue.svg" alt=""> </a> <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation"> @@ -53,38 +45,60 @@ <div class="collapse navbar-collapse" id="navbarSupportedContent"> - <ul class="navbar-nav ml-auto"> + <div class="navbar-nav ml-auto"> - <!-- Download --> + <!-- Quick Start --> <li class="nav-item"> - <a class="nav-link" href="/general/downloads">Download</a> + <a class="nav-link" href="/docs/latest" >Overview</a> </li> - <li class="nav-item"> - <a class="nav-link" href="/docs/latest/index.html">Overview</a> + <li class="nav-item dropdown"> + <a class="nav-link dropdown-toggle" href="" id="navbarDropdownMenuLink" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Key Concepts</a> + <div class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink"> + <a class="dropdown-item" href="/docs/latest/index.html">Mahout Overview</a> + <div class="dropdown-divider"></div> + <h6 class="dropdown-header">Scala DSL</h6> + <a class="dropdown-item" href="/docs/latest/mahout-samsara/in-core-reference.html">In-core Reference</a> + <a class="dropdown-item" href="/docs/latest/mahout-samsara/out-of-core-reference.html">Out-of-core Reference</a> + <a class="dropdown-item" href="/docs/latest/mahout-samsara/faq.html">Samsara FAQ</a> + <div class="dropdown-divider"></div> + <h6 class="dropdown-header">Distributed Engine Bindings</h6> + <a class="dropdown-item" href="/docs/latest/distributed/spark-bindings/">Spark Bindings</a> + <a class="dropdown-item" href="/docs/latest/distributed/flink-bindings.html">Flink Bindings</a> + <a class="dropdown-item" href="/docs/latest/distributed/flink-bindings.html">H20 Bindings</a> + <!--<div class="dropdown-divider"></div> + <h6 class="dropdown-header">Native Solvers</h6> + <a class="dropdown-item" href="/docs/latest/native-solvers/viennacl.html">ViennaCL</a></li> + <a class="dropdown-item" href="/docs/latest/native-solvers/viennacl-omp.html">ViennaCL-OMP</a></li> + <a class="dropdown-item" href="/docs/latest/native-solvers/cuda.html">CUDA</a></li>--> + </div> </li> - <!-- Algorithms (Samsara / MR) --> <li class="nav-item dropdown"> - <a class="nav-link dropdown-toggle" href="" id="navbarDropdownMenuLink" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Algorithms</a> + <a class="nav-link dropdown-toggle" href="" id="navbarDropdownMenuLink" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Tutorial</a> <div class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink"> - <a class="dropdown-item" href="/docs/latest/algorithms/linear-algebra">Distributed Linear Algebra</a> - <a class="dropdown-item" href="/docs/latest/algorithms/preprocessors">Preprocessors</a> - <a class="dropdown-item" href="/docs/latest/algorithms/regression">Regression</a> - <a class="dropdown-item" href="/docs/latest/algorithms/clustering">Clustering</a> - <a class="dropdown-item" href="/docs/latest/algorithms/recommenders">Recommenders</a> + <div class="dropdown-divider"></div> + <h6 class="dropdown-header">Recommenders</h6> + <a class="dropdown-item" href="/docs/latest/tutorials/cco-lastfm">CCO Example with Last.FM Data</a> + <a class="dropdown-item" href="/docs/latest/tutorials/intro-cooccurrence-spark">Introduction to Cooccurrence in Spark</a> + <div class="dropdown-divider"></div> + <h6 class="dropdown-header">Mahout Samsara</h6> + <a class="dropdown-item" href="/docs/latest/tutorials/samsara/play-with-shell.html">Playing with Samsara in Spark Shell</a> + <a class="dropdown-item" href="/docs/latest/tutorials/samsara/playing-with-samsara-flink-batch.html">Playing with Samsara in Flink Batch</a> + <a class="dropdown-item" href="/docs/latest/tutorials/samsara/classify-a-doc-from-the-shell.html">Text Classification (Shell)</a> + <a class="dropdown-item" href="/docs/latest/tutorials/samsara/spark-naive-bayes.html">Spark Naive Bayes</a> + <div class="dropdown-divider"></div> + <h6 class="dropdown-header">Misc</h6> + <a class="dropdown-item" href="/docs/latest/tutorials/misc/mahout-in-zeppelin">Mahout in Apache Zeppelin</a> + <a class="dropdown-item" href="/docs/latest/tutorials/misc/contributing-algos">How To Contribute a New Algorithm</a> + <a class="dropdown-item" href="/docs/latest/tutorials/misc/how-to-build-an-app.html">How To Build An App</a> <div class="dropdown-divider"></div> <h6 class="dropdown-header">Deprecated</h6> - <a class="dropdown-item" href="/docs/latest/algorithms/map-reduce">MapReduce <i>(deprecated)</i></a> + <a class="dropdown-item" href="/docs/latest/tutorials/map-reduce">MapReduce</a> </div> - <!--<a class="dropdown-item" href="/docs/latest/algorithms/recommenders/recommender-overview.html">Reccomender Overview</a></li> Do we still need? seems like short version of next post--> - <!-- - <a class="dropdown-item" href="/docs/latest/algorithms/recommenders/intro-cooccurrence-spark.html">Intro to Coocurrence With Spark</a></li> - <li role="separator" class="divider"></li> - <li><span> <a href="/docs/latest/algorithms/map-reduce"><b>MapReduce</b> (deprecated)</a><span></li> - - --> </li> + + <!-- Algorithms (Samsara / MR) --> <li class="nav-item dropdown"> <a class="nav-link dropdown-toggle" href="" id="navbarDropdownMenuLink" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Algorithms</a> @@ -98,93 +112,70 @@ <h6 class="dropdown-header">Deprecated</h6> <a class="dropdown-item" href="/docs/latest/algorithms/map-reduce">MapReduce <i>(deprecated)</i></a> </div> - <!--<a class="dropdown-item" href="/docs/latest/algorithms/recommenders/recommender-overview.html">Reccomender Overview</a></li> Do we still need? seems like short version of next post--> - <!-- - <a class="dropdown-item" href="/docs/latest/algorithms/recommenders/intro-cooccurrence-spark.html">Intro to Coocurrence With Spark</a></li> - <li role="separator" class="divider"></li> - <li><span> <a href="/docs/latest/algorithms/map-reduce"><b>MapReduce</b> (deprecated)</a><span></li> - --> - </li> + <!--<a class="dropdown-item" href="/docs/latest/algorithms/recommenders/recommender-overview.html">Reccomender Overview</a></li> Do we still need? seems like short version of next post--> + <!-- + <a class="dropdown-item" href="/docs/latest/algorithms/recommenders/intro-cooccurrence-spark.html">Intro to Coocurrence With Spark</a></li> + <li role="separator" class="divider"></li> + <li><span> <a href="/docs/latest/algorithms/map-reduce"><b>MapReduce</b> (deprecated)</a><span></li> - <!-- Developers --> - 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<!-- GitHub --> - <li class="nav-item"> - <a class="nav-link" href="http://github.com/apache/mahout";><i class="fa fa-github"></i></a> - </li> - </ul> - <!-- <form class="form-inline my-2 my-lg-0"> - <input class="form-control mr-sm-2" type="text" placeholder="Search" aria-label="Search"> - <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button> - </form> --> + <!--<form class="navbar-form navbar-left">--> + <!--<div class="form-group">--> + <!--<input type="text" class="form-control" placeholder="Search">--> + <!--</div>--> + <!--<button type="submit" class="btn btn-default">Submit</button>--> + <!--</form>--> + <!--<ul class="nav navbar-nav navbar-right">--> + <!--<a class="dropdown-item" href="http://github.com/apache/mahout";>Github</a></li>--> - </div> - </div> + <!--</ul>--> + </div><!-- /.navbar-collapse --> + </div> </nav> - <h1 id="recommender-overview">Recommender Overview</h1> + <div class="container mt-5 pb-4"> -<p>Recommenders have changed over the years. Mahout contains a long list of them, which you can still use. But to get the best out of our more modern aproach weâll need to think of the Recommender as a âmodel creationâ componentâsupplied by Mahoutâs new spark-itemsimilarity job, and a âservingâ componentâsupplied by a modern scalable search engine, like Solr.</p> + <div class="row"> + + <div class="col-lg-8"> + <h1 id="recommender-overview">Recommender Overview</h1> + +<p>Recommenders have changed over the years. Mahout contains a long list of them, which you can still use. However in about 2013 there was a revolution in recommenders, which favored what we might call âMultimodalâ, meaning they could take in data of all sortsâbasically anything we might think was an indicator of user taste. The new Samsara algorithm, called Correlated Cross-Occurrence (CCO) is just such a next gen recommender algorithm but Mahout-Samsara only implements the model building part. This can be integrated as the user see fit and the rest of this doc will explain how.</p> + +<h2 id="turnkey-implementation">Turnkey Implementation</h2> + +<p>If you are looking for an end-to-end OSS recommender based on the Mahout CCO algorithm have a look at <a href="https://github.com/actionml/universal-recommender";>The Universal Recommender</a>, which is implemented using <a href="http://predictionio.apache.org/";>Apache PredictionIO</a>. See instructions for <a href="http://actionml.com/docs/pio_by_actionml";>installation here</a>. There is even an AWS AMI for convenience (this is a for-pay option)</p> + +<h2 id="build-your-own-integration">Build Your Own Integration</h2> + +<p>To get the most out of our more modern CCO algorithm weâll need to think of the Recommender as a âmodel creationâ componentâsupplied by Mahoutâs new spark-itemsimilarity job, and a âservingâ componentâsupplied by a modern scalable search engine, like Solr or Elasticsearch. Here we describe a loose integration that does not require using Mahout as a library, it uses Mahoutâs command line interface. This is clearly not the best but allows one to experiments and get a real recommender running easily.</p> <p><img src="http://i.imgur.com/fliHMBo.png"; alt="image" /></p> @@ -196,7 +187,7 @@ <p>All ids for users and items are preserved as string tokens and so work as an external key in DBs or as doc ids for search engines, they also work as tokens for search queries.</p> -<p>##References</p> +<h2 id="references">References</h2> <ol> <li>A free ebook, which talks about the general idea: <a href="https://www.mapr.com/practical-machine-learning";>Practical Machine Learning</a></li> @@ -206,10 +197,17 @@ and <a href="http://occamsmachete.com/ml/2014/09/09/mahout-on-spark-whats-new-i <li>A post describing the loglikelihood ratio: <a href="http://tdunning.blogspot.com/2008/03/surprise-and-coincidence.html";>Surprise and Coinsidense</a> LLR is used to reduce noise in the data while keeping the calculations O(n) complexity.</li> </ol> -<p>##Mahout Model Creation</p> +<h2 id="mahout-model-creation">Mahout Model Creation</h2> <p>See the page describing <a href="http://mahout.apache.org/users/recommender/intro-cooccurrence-spark.html";><em>spark-itemsimilarity</em></a> for more details.</p> + </div> + + + </div> + +</div> + <footer class="footer bg-light"> <div class="container text-center small">
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