blob: 6faf8b28fe1d9cebf2ce056e8b56bad1761da64b [file] [log] [blame]
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8"/>
<meta content="IE=edge" http-equiv="X-UA-Compatible"/>
<meta content="width=device-width, initial-scale=1" name="viewport"/>
<title>MXNet - Scala API — mxnet documentation</title>
<link crossorigin="anonymous" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" rel="stylesheet"/>
<link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css" rel="stylesheet"/>
<link href="../../_static/basic.css" rel="stylesheet" type="text/css"/>
<link href="../../_static/pygments.css" rel="stylesheet" type="text/css"/>
<link href="../../_static/mxnet.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript">
var DOCUMENTATION_OPTIONS = {
URL_ROOT: '../../',
VERSION: '',
COLLAPSE_INDEX: false,
FILE_SUFFIX: '.html',
HAS_SOURCE: true,
SOURCELINK_SUFFIX: ''
};
</script>
<script src="../../_static/jquery-1.11.1.js" type="text/javascript"></script>
<script src="../../_static/underscore.js" type="text/javascript"></script>
<script src="../../_static/searchtools_custom.js" type="text/javascript"></script>
<script src="../../_static/doctools.js" type="text/javascript"></script>
<script src="../../_static/selectlang.js" type="text/javascript"></script>
<script src="https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML" type="text/javascript"></script>
<script type="text/javascript"> jQuery(function() { Search.loadIndex("/searchindex.js"); Search.init();}); </script>
<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','https://www.google-analytics.com/analytics.js','ga');
ga('create', 'UA-96378503-1', 'auto');
ga('send', 'pageview');
</script>
<!-- -->
<!-- <script type="text/javascript" src="../../_static/jquery.js"></script> -->
<!-- -->
<!-- <script type="text/javascript" src="../../_static/underscore.js"></script> -->
<!-- -->
<!-- <script type="text/javascript" src="../../_static/doctools.js"></script> -->
<!-- -->
<!-- <script type="text/javascript" src="https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script> -->
<!-- -->
<link href="module.html" rel="next" title="Module API"/>
<link href="../c++/index.html" rel="prev" title="MXNet - C++ API">
<link href="https://raw.githubusercontent.com/dmlc/web-data/master/mxnet/image/mxnet-icon.png" rel="icon" type="image/png"/>
</link></head>
<body background="https://raw.githubusercontent.com/dmlc/web-data/master/mxnet/image/mxnet-background-compressed.jpeg" role="document">
<div class="content-block"><div class="navbar navbar-fixed-top">
<div class="container" id="navContainer">
<div class="innder" id="header-inner">
<h1 id="logo-wrap">
<a href="../../" id="logo"><img src="https://raw.githubusercontent.com/dmlc/web-data/master/mxnet/image/mxnet_logo.png"/></a>
</h1>
<nav class="nav-bar" id="main-nav">
<a class="main-nav-link" href="../../install/index.html">Install</a>
<a class="main-nav-link" href="../../tutorials/index.html">Tutorials</a>
<span id="dropdown-menu-position-anchor">
<a aria-expanded="true" aria-haspopup="true" class="main-nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button">Gluon <span class="caret"></span></a>
<ul class="dropdown-menu navbar-menu" id="package-dropdown-menu">
<li><a class="main-nav-link" href="../../gluon/index.html">About</a></li>
<li><a class="main-nav-link" href="http://gluon.mxnet.io">Tutorials</a></li>
</ul>
</span>
<span id="dropdown-menu-position-anchor">
<a aria-expanded="true" aria-haspopup="true" class="main-nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button">API <span class="caret"></span></a>
<ul class="dropdown-menu navbar-menu" id="package-dropdown-menu">
<li><a class="main-nav-link" href="../../api/python/index.html">Python</a></li>
<li><a class="main-nav-link" href="../../api/scala/index.html">Scala</a></li>
<li><a class="main-nav-link" href="../../api/r/index.html">R</a></li>
<li><a class="main-nav-link" href="../../api/julia/index.html">Julia</a></li>
<li><a class="main-nav-link" href="../../api/c++/index.html">C++</a></li>
<li><a class="main-nav-link" href="../../api/perl/index.html">Perl</a></li>
</ul>
</span>
<span id="dropdown-menu-position-anchor-docs">
<a aria-expanded="true" aria-haspopup="true" class="main-nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button">Docs <span class="caret"></span></a>
<ul class="dropdown-menu navbar-menu" id="package-dropdown-menu-docs">
<li><a class="main-nav-link" href="../../faq/index.html">FAQ</a></li>
<li><a class="main-nav-link" href="../../architecture/index.html">Architecture</a></li>
<li><a class="main-nav-link" href="https://github.com/apache/incubator-mxnet/tree/0.12.0/example">Examples</a></li>
<li><a class="main-nav-link" href="../../model_zoo/index.html">Model Zoo</a></li>
</ul>
</span>
<a class="main-nav-link" href="https://github.com/dmlc/mxnet">Github</a>
<span id="dropdown-menu-position-anchor-community">
<a aria-expanded="true" aria-haspopup="true" class="main-nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button">Community <span class="caret"></span></a>
<ul class="dropdown-menu navbar-menu" id="package-dropdown-menu-community">
<li><a class="main-nav-link" href="../../community/index.html">Community</a></li>
<li><a class="main-nav-link" href="../../community/contribute.html">Contribute</a></li>
<li><a class="main-nav-link" href="../../community/powered_by.html">Powered By</a></li>
</ul>
</span>
<a class="main-nav-link" href="http://discuss.mxnet.io">Discuss</a>
<span id="dropdown-menu-position-anchor-version" style="position: relative"><a href="#" class="main-nav-link dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="true">Versions(0.12.0)<span class="caret"></span></a><ul id="package-dropdown-menu" class="dropdown-menu"><li><a class="main-nav-link" href=https://mxnet.incubator.apache.org/>1.1.0</a></li><li><a class="main-nav-link" href=https://mxnet.incubator.apache.org/versions/1.0.0/index.html>1.0.0</a></li><li><a class="main-nav-link" href=https://mxnet.incubator.apache.org/versions/0.12.1/index.html>0.12.1</a></li><li><a class="main-nav-link" href=https://mxnet.incubator.apache.org/versions/0.12.0/index.html>0.12.0</a></li><li><a class="main-nav-link" href=https://mxnet.incubator.apache.org/versions/0.11.0/index.html>0.11.0</a></li><li><a class="main-nav-link" href=https://mxnet.incubator.apache.org/versions/master/index.html>master</a></li></ul></span></nav>
<script> function getRootPath(){ return "../../" } </script>
<div class="burgerIcon dropdown">
<a class="dropdown-toggle" data-toggle="dropdown" href="#" role="button"></a>
<ul class="dropdown-menu" id="burgerMenu">
<li><a href="../../install/index.html">Install</a></li>
<li><a class="main-nav-link" href="../../tutorials/index.html">Tutorials</a></li>
<li class="dropdown-submenu">
<a href="#" tabindex="-1">Community</a>
<ul class="dropdown-menu">
<li><a href="../../community/index.html" tabindex="-1">Community</a></li>
<li><a href="../../community/contribute.html" tabindex="-1">Contribute</a></li>
<li><a href="../../community/powered_by.html" tabindex="-1">Powered By</a></li>
</ul>
</li>
<li class="dropdown-submenu">
<a href="#" tabindex="-1">API</a>
<ul class="dropdown-menu">
<li><a href="../../api/python/index.html" tabindex="-1">Python</a>
</li>
<li><a href="../../api/scala/index.html" tabindex="-1">Scala</a>
</li>
<li><a href="../../api/r/index.html" tabindex="-1">R</a>
</li>
<li><a href="../../api/julia/index.html" tabindex="-1">Julia</a>
</li>
<li><a href="../../api/c++/index.html" tabindex="-1">C++</a>
</li>
<li><a href="../../api/perl/index.html" tabindex="-1">Perl</a>
</li>
</ul>
</li>
<li class="dropdown-submenu">
<a href="#" tabindex="-1">Docs</a>
<ul class="dropdown-menu">
<li><a href="../../tutorials/index.html" tabindex="-1">Tutorials</a></li>
<li><a href="../../faq/index.html" tabindex="-1">FAQ</a></li>
<li><a href="../../architecture/index.html" tabindex="-1">Architecture</a></li>
<li><a href="https://github.com/apache/incubator-mxnet/tree/0.12.0/example" tabindex="-1">Examples</a></li>
<li><a href="../../model_zoo/index.html" tabindex="-1">Model Zoo</a></li>
</ul>
</li>
<li><a href="../../architecture/index.html">Architecture</a></li>
<li><a class="main-nav-link" href="https://github.com/dmlc/mxnet">Github</a></li>
<li id="dropdown-menu-position-anchor-version-mobile" class="dropdown-submenu" style="position: relative"><a href="#" tabindex="-1">Versions(0.12.0)</a><ul class="dropdown-menu"><li><a tabindex="-1" href=https://mxnet.incubator.apache.org/>1.1.0</a></li><li><a tabindex="-1" href=https://mxnet.incubator.apache.org/versions/1.0.0/index.html>1.0.0</a></li><li><a tabindex="-1" href=https://mxnet.incubator.apache.org/versions/0.12.1/index.html>0.12.1</a></li><li><a tabindex="-1" href=https://mxnet.incubator.apache.org/versions/0.12.0/index.html>0.12.0</a></li><li><a tabindex="-1" href=https://mxnet.incubator.apache.org/versions/0.11.0/index.html>0.11.0</a></li><li><a tabindex="-1" href=https://mxnet.incubator.apache.org/versions/master/index.html>master</a></li></ul></li></ul>
</div>
<div class="plusIcon dropdown">
<a class="dropdown-toggle" data-toggle="dropdown" href="#" role="button"><span aria-hidden="true" class="glyphicon glyphicon-plus"></span></a>
<ul class="dropdown-menu dropdown-menu-right" id="plusMenu"></ul>
</div>
<div id="search-input-wrap">
<form action="../../search.html" autocomplete="off" class="" method="get" role="search">
<div class="form-group inner-addon left-addon">
<i class="glyphicon glyphicon-search"></i>
<input class="form-control" name="q" placeholder="Search" type="text"/>
</div>
<input name="check_keywords" type="hidden" value="yes"/>
<input name="area" type="hidden" value="default"/>
</form>
<div id="search-preview"></div>
</div>
<div id="searchIcon">
<span aria-hidden="true" class="glyphicon glyphicon-search"></span>
</div>
<!-- <div id="lang-select-wrap"> -->
<!-- <label id="lang-select-label"> -->
<!-- <\!-- <i class="fa fa-globe"></i> -\-> -->
<!-- <span></span> -->
<!-- </label> -->
<!-- <select id="lang-select"> -->
<!-- <option value="en">Eng</option> -->
<!-- <option value="zh">中文</option> -->
<!-- </select> -->
<!-- </div> -->
<!-- <a id="mobile-nav-toggle">
<span class="mobile-nav-toggle-bar"></span>
<span class="mobile-nav-toggle-bar"></span>
<span class="mobile-nav-toggle-bar"></span>
</a> -->
</div>
</div>
</div>
<script type="text/javascript">
$('body').css('background', 'white');
</script>
<div class="container">
<div class="row">
<div aria-label="main navigation" class="sphinxsidebar leftsidebar" role="navigation">
<div class="sphinxsidebarwrapper">
<ul class="current">
<li class="toctree-l1"><a class="reference internal" href="../python/index.html">Python Documents</a></li>
<li class="toctree-l1"><a class="reference internal" href="../r/index.html">R Documents</a></li>
<li class="toctree-l1"><a class="reference internal" href="../julia/index.html">Julia Documents</a></li>
<li class="toctree-l1"><a class="reference internal" href="../c++/index.html">C++ Documents</a></li>
<li class="toctree-l1 current"><a class="current reference internal" href="">Scala Documents</a><ul>
<li class="toctree-l2"><a class="reference internal" href="#scala-api-reference">Scala API Reference</a><ul>
<li class="toctree-l3"><a class="reference internal" href="module.html">Module API is a flexible high-level interface for training neural networks.</a></li>
<li class="toctree-l3"><a class="reference internal" href="model.html">Model API is an alternate simple high-level interface for training neural networks.</a></li>
<li class="toctree-l3"><a class="reference internal" href="symbol.html">Symbolic API performs operations on NDArrays to assemble neural networks from layers.</a></li>
<li class="toctree-l3"><a class="reference internal" href="io.html">IO Data Loading API performs parsing and data loading.</a></li>
<li class="toctree-l3"><a class="reference internal" href="ndarray.html">NDArray API performs vector/matrix/tensor operations.</a></li>
<li class="toctree-l3"><a class="reference internal" href="kvstore.html">KVStore API performs multi-GPU and multi-host distributed training.</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="#resources">Resources</a><ul>
<li class="toctree-l3"><a class="reference external" href="https://mxnet.incubator.apache.org/api/scala/docs/index.html">MXNet Scala API Documentation</a></li>
<li class="toctree-l3"><a class="reference external" href="https://mxnet.incubator.apache.org/tutorials/scala/mnist.html">Handwritten Digit Classification in Scala</a></li>
<li class="toctree-l3"><a class="reference external" href="https://github.com/dmlc/mxnet/blob/master/scala-package/examples/src/main/scala/org/apache/mxnetexamples/neuralstyle/NeuralStyle.scala">Neural Style in Scala on MXNet</a></li>
<li class="toctree-l3"><a class="reference external" href="https://github.com/dmlc/mxnet/tree/master/scala-package/examples/src/main/scala/org/apache/mxnetexamples">More Scala Examples</a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="../perl/index.html">Perl Documents</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../faq/index.html">HowTo Documents</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../architecture/index.html">System Documents</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../tutorials/index.html">Tutorials</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../community/index.html">Community</a></li>
</ul>
</div>
</div>
<div class="content">
<div class="page-tracker"></div>
<div class="section" id="mxnet-scala-api">
<span id="mxnet-scala-api"></span><h1>MXNet - Scala API<a class="headerlink" href="#mxnet-scala-api" title="Permalink to this headline"></a></h1>
<p>See the <a class="reference external" href="https://mxnet.incubator.apache.org/api/scala/docs/index.html">MXNet Scala API Documentation</a>.</p>
<p>MXNet supports the Scala programming language. The MXNet Scala package brings flexible and efficient GPU
computing and state-of-art deep learning to Scala. It enables you to write seamless tensor/matrix computation with multiple GPUs in Scala. It also lets you construct and customize the state-of-art deep learning models in Scala,
and apply them to tasks, such as image classification and data science challenges.</p>
<p>You can perform tensor or matrix computation in pure Scala:</p>
<div class="highlight-scala"><div class="highlight"><pre><span></span> <span class="n">scala</span><span class="o">></span> <span class="k">import</span> <span class="nn">ml.dmlc.mxnet._</span>
<span class="k">import</span> <span class="nn">ml.dmlc.mxnet._</span>
<span class="n">scala</span><span class="o">></span> <span class="k">val</span> <span class="n">arr</span> <span class="k">=</span> <span class="nc">NDArray</span><span class="o">.</span><span class="n">ones</span><span class="o">(</span><span class="mi">2</span><span class="o">,</span> <span class="mi">3</span><span class="o">)</span>
<span class="n">arr</span><span class="k">:</span> <span class="kt">ml.dmlc.mxnet.NDArray</span> <span class="o">=</span> <span class="n">ml</span><span class="o">.</span><span class="n">dmlc</span><span class="o">.</span><span class="n">mxnet</span><span class="o">.</span><span class="nc">NDArray</span><span class="nd">@f5e74790</span>
<span class="n">scala</span><span class="o">></span> <span class="n">arr</span><span class="o">.</span><span class="n">shape</span>
<span class="n">res0</span><span class="k">:</span> <span class="kt">ml.dmlc.mxnet.Shape</span> <span class="o">=</span> <span class="o">(</span><span class="mi">2</span><span class="o">,</span><span class="mi">3</span><span class="o">)</span>
<span class="n">scala</span><span class="o">></span> <span class="o">(</span><span class="n">arr</span> <span class="o">*</span> <span class="mi">2</span><span class="o">).</span><span class="n">toArray</span>
<span class="n">res2</span><span class="k">:</span> <span class="kt">Array</span><span class="o">[</span><span class="kt">Float</span><span class="o">]</span> <span class="k">=</span> <span class="nc">Array</span><span class="o">(</span><span class="mf">2.0</span><span class="o">,</span> <span class="mf">2.0</span><span class="o">,</span> <span class="mf">2.0</span><span class="o">,</span> <span class="mf">2.0</span><span class="o">,</span> <span class="mf">2.0</span><span class="o">,</span> <span class="mf">2.0</span><span class="o">)</span>
<span class="n">scala</span><span class="o">></span> <span class="o">(</span><span class="n">arr</span> <span class="o">*</span> <span class="mi">2</span><span class="o">).</span><span class="n">shape</span>
<span class="n">res3</span><span class="k">:</span> <span class="kt">ml.dmlc.mxnet.Shape</span> <span class="o">=</span> <span class="o">(</span><span class="mi">2</span><span class="o">,</span><span class="mi">3</span><span class="o">)</span>
</pre></div>
</div>
<div class="section" id="scala-api-reference">
<span id="scala-api-reference"></span><h2>Scala API Reference<a class="headerlink" href="#scala-api-reference" title="Permalink to this headline"></a></h2>
<div class="toctree-wrapper compound">
<ul>
<li class="toctree-l1"><a class="reference internal" href="module.html">Module API is a flexible high-level interface for training neural networks.</a></li>
<li class="toctree-l1"><a class="reference internal" href="model.html">Model API is an alternate simple high-level interface for training neural networks.</a></li>
<li class="toctree-l1"><a class="reference internal" href="symbol.html">Symbolic API performs operations on NDArrays to assemble neural networks from layers.</a></li>
<li class="toctree-l1"><a class="reference internal" href="io.html">IO Data Loading API performs parsing and data loading.</a></li>
<li class="toctree-l1"><a class="reference internal" href="ndarray.html">NDArray API performs vector/matrix/tensor operations.</a></li>
<li class="toctree-l1"><a class="reference internal" href="kvstore.html">KVStore API performs multi-GPU and multi-host distributed training.</a></li>
</ul>
</div>
</div>
<div class="section" id="resources">
<span id="resources"></span><h2>Resources<a class="headerlink" href="#resources" title="Permalink to this headline"></a></h2>
<div class="toctree-wrapper compound">
<ul>
<li class="toctree-l1"><a class="reference external" href="https://mxnet.incubator.apache.org/api/scala/docs/index.html">MXNet Scala API Documentation</a></li>
<li class="toctree-l1"><a class="reference external" href="https://mxnet.incubator.apache.org/tutorials/scala/mnist.html">Handwritten Digit Classification in Scala</a></li>
<li class="toctree-l1"><a class="reference external" href="https://github.com/dmlc/mxnet/blob/master/scala-package/examples/src/main/scala/org/apache/mxnetexamples/neuralstyle/NeuralStyle.scala">Neural Style in Scala on MXNet</a></li>
<li class="toctree-l1"><a class="reference external" href="https://github.com/dmlc/mxnet/tree/master/scala-package/examples/src/main/scala/org/apache/mxnetexamples">More Scala Examples</a></li>
</ul>
</div>
</div>
</div>
</div>
</div>
<div aria-label="main navigation" class="sphinxsidebar rightsidebar" role="navigation">
<div class="sphinxsidebarwrapper">
<h3><a href="../../index.html">Table Of Contents</a></h3>
<ul>
<li><a class="reference internal" href="#">MXNet - Scala API</a><ul>
<li><a class="reference internal" href="#scala-api-reference">Scala API Reference</a></li>
<li><a class="reference internal" href="#resources">Resources</a></li>
</ul>
</li>
</ul>
</div>
</div>
</div><div class="footer">
<div class="section-disclaimer">
<div class="container">
<div>
<img height="60" src="https://raw.githubusercontent.com/dmlc/web-data/master/mxnet/image/apache_incubator_logo.png"/>
<p>
Apache MXNet is an effort undergoing incubation at The Apache Software Foundation (ASF), <strong>sponsored by the <i>Apache Incubator</i></strong>. Incubation is required of all newly accepted projects until a further review indicates that the infrastructure, communications, and decision making process have stabilized in a manner consistent with other successful ASF projects. While incubation status is not necessarily a reflection of the completeness or stability of the code, it does indicate that the project has yet to be fully endorsed by the ASF.
</p>
<p>
"Copyright © 2017, The Apache Software Foundation
Apache MXNet, MXNet, Apache, the Apache feather, and the Apache MXNet project logo are either registered trademarks or trademarks of the Apache Software Foundation."
</p>
</div>
</div>
</div>
</div> <!-- pagename != index -->
</div>
<script crossorigin="anonymous" integrity="sha384-0mSbJDEHialfmuBBQP6A4Qrprq5OVfW37PRR3j5ELqxss1yVqOtnepnHVP9aJ7xS" src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<script src="../../_static/js/sidebar.js" type="text/javascript"></script>
<script src="../../_static/js/search.js" type="text/javascript"></script>
<script src="../../_static/js/navbar.js" type="text/javascript"></script>
<script src="../../_static/js/clipboard.min.js" type="text/javascript"></script>
<script src="../../_static/js/copycode.js" type="text/javascript"></script>
<script src="../../_static/js/page.js" type="text/javascript"></script>
<script type="text/javascript">
$('body').ready(function () {
$('body').css('visibility', 'visible');
});
</script>
</body>
</html>