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</ul> - </div> - </div> -</div> + <!--</ul>--> + </div><!-- /.navbar-collapse --> </div> +</nav> - <div class="col-md-8"> - <div class="page-header"> - <h1>(Deprecated) K-Means Clustering </h1> - </div> - <h1 id="k-means-clustering---basics">k-Means clustering - basics</h1> + <div class="container mt-5 pb-4"> + + <div class="row"> + + <div class="col-lg-8"> + <h1 id="k-means-clustering---basics">k-Means clustering - basics</h1> <p><a href="http://en.wikipedia.org/wiki/Kmeans";>k-Means</a> is a simple but well-known algorithm for grouping objects, clustering. All objects need to be represented as a set of numerical features. In addition, the user has to specify the @@ -365,7 +222,7 @@ clustering and convergence values.</p> <p>Canopy clustering can be used to compute the initial clusters for k-KMeans:</p> -<pre><code>// run the CanopyDriver job +<div class="highlighter-rouge"><pre class="highlight"><code>// run the CanopyDriver job CanopyDriver.runJob("testdata", "output" ManhattanDistanceMeasure.class.getName(), (float) 3.1, (float) 2.1, false); @@ -373,6 +230,7 @@ ManhattanDistanceMeasure.class.getName(), (float) 3.1, (float) 2.1, false); KMeansDriver.runJob("testdata", "output/clusters-0", "output", EuclideanDistanceMeasure.class.getName(), "0.001", "10", true); </code></pre> +</div> <p>In the above example, the input data points are stored in âtestdataâ and the CanopyDriver is configured to output to the âoutput/clusters-0â @@ -393,7 +251,7 @@ on KMeansDriver.main or by making a Java call to KMeansDriver.runJob().</p> <p>Invocation using the command line takes the form:</p> -<pre><code>bin/mahout kmeans \ +<div class="highlighter-rouge"><pre class="highlight"><code>bin/mahout kmeans \ -i <input vectors directory> \ -c <input clusters directory> \ -o <output working directory> \ @@ -405,6 +263,7 @@ on KMeansDriver.main or by making a Java call to KMeansDriver.runJob().</p> -cl <run input vector clustering after computing Canopies> -xm <execution method: sequential or mapreduce> </code></pre> +</div> <p>Note: if the -k argument is supplied, any clusters in the -c directory will be overwritten and -k random points will be sampled from the input @@ -486,32 +345,25 @@ K-Means does a fair job handling this data set as well.</p> <p><img src="../../images/2dKMeans.png" alt="2d kmeans" /></p> </div> -</div> - </div> - - -</div> -<div id="footer"> - <div class="container"> - <p>© 2017 Apache Mahout - with help from <a href="http://jekyllbootstrap.com"; target="_blank" title="The Definitive Jekyll Blogging Framework">Jekyll Bootstrap</a> - and <a href="http://getbootstrap.com"; target="_blank">Bootstrap</a> - </p> </div> -</div> - - +</div> + <footer class="footer bg-light"> + <div class="container text-center small"> + Copyright © 2014-2017 The Apache Software Foundation, Licensed under the Apache License, Version 2.0. + </div> +</footer> + <script src="/assets/vendor/jquery/jquery-slim.min.js"></script> + <script src="/assets/vendor/popper/popper.min.js"></script> + <script src="/assets/vendor/bootstrap/js/bootstrap.min.js"></script> + <script src="/assets/header.js"></script> + <script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0/MathJax.js?config=TeX-AMS-MML_HTMLorMML"; type="text/javascript"></script> -<!-- Latest compiled and minified JavaScript, requires jQuery 1.x (2.x not supported in IE8) --> -<!-- Placed at the end of the document so the pages load faster --> -<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js";></script> -<script src="/assets/themes/mahout3/js/bootstrap.min.js"></script> </body> -</html> +</html>
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</ul> - </div> - </div> -</div> + <!--</ul>--> + </div><!-- /.navbar-collapse --> </div> +</nav> - <div class="col-md-8"> - <div class="page-header"> - <h1>(Deprecated) Latent Dirichlet Allocation </h1> - </div> - <p><a name="LatentDirichletAllocation-Overview"></a></p> + <div class="container mt-5 pb-4"> + + <div class="row"> + + <div class="col-lg-8"> + <p><a name="LatentDirichletAllocation-Overview"></a></p> <h1 id="overview">Overview</h1> <p>Latent Dirichlet Allocation (Blei et al, 2003) is a powerful learning @@ -377,7 +234,7 @@ vectors, itâs recommended that you follow the instructions in <a href="../basi <p>Invocation takes the form:</p> -<pre><code>bin/mahout cvb \ +<div class="highlighter-rouge"><pre class="highlight"><code>bin/mahout cvb \ -i <input path for document vectors> \ -dict <path to term-dictionary file(s) , glob expression supported> \ -o <output path for topic-term distributions> @@ -393,6 +250,7 @@ vectors, itâs recommended that you follow the instructions in <a href="../basi -tf <fraction of data to hold for testing> \ -block <number of iterations per perplexity check, ignored unless test_set_percentage>0> \ </code></pre> +</div> <p>Topic smoothing should generally be about 50/K, where K is the number of topics. The number of words in the vocabulary can be an upper bound, though @@ -404,7 +262,7 @@ recommended that you try several values.</p> <p>After running LDA you can obtain an output of the computed topics using the LDAPrintTopics utility:</p> -<pre><code>bin/mahout ldatopics \ +<div class="highlighter-rouge"><pre class="highlight"><code>bin/mahout ldatopics \ -i <input vectors directory> \ -d <input dictionary file> \ -w <optional number of words to print> \ @@ -412,6 +270,7 @@ LDAPrintTopics utility:</p> -h <print out help> \ -dt <optional dictionary type (text|sequencefile). Default is text> </code></pre> +</div> <p><a name="LatentDirichletAllocation-Example"></a></p> <h1 id="example">Example</h1> @@ -452,32 +311,25 @@ post-processing step.</p> <p><a href="-http://aclweb.org/anthology//D/D08/D08-1038.pdf";>David Hall, Dan Jurafsky, and Christopher D. Manning. 2008. Studying the History of Ideas Using Topic Models </a></p> </div> -</div> - </div> - - -</div> -<div id="footer"> - <div class="container"> - <p>© 2017 Apache Mahout - with help from <a href="http://jekyllbootstrap.com"; target="_blank" title="The Definitive Jekyll Blogging Framework">Jekyll Bootstrap</a> - and <a href="http://getbootstrap.com"; target="_blank">Bootstrap</a> - </p> </div> -</div> - - +</div> + <footer class="footer bg-light"> + <div class="container text-center small"> + Copyright © 2014-2017 The Apache Software Foundation, Licensed under the Apache License, Version 2.0. + </div> +</footer> + <script src="/assets/vendor/jquery/jquery-slim.min.js"></script> + <script src="/assets/vendor/popper/popper.min.js"></script> + <script src="/assets/vendor/bootstrap/js/bootstrap.min.js"></script> + <script src="/assets/header.js"></script> + <script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0/MathJax.js?config=TeX-AMS-MML_HTMLorMML"; type="text/javascript"></script> -<!-- Latest compiled and minified JavaScript, requires jQuery 1.x (2.x not supported in IE8) --> -<!-- Placed at the end of the document so the pages load faster --> -<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js";></script> -<script src="/assets/themes/mahout3/js/bootstrap.min.js"></script> </body> -</html> +</html>
