Add conceptual info for MADlib deep learning
<p>This chapter includes the following information:</p>
<ul>
<li id="pz219023"><xref href="#topic2" type="topic" format="dita"/></li>
+ <li><xref href="#topic_khs_klx_g3b" format="dita"/></li>
<li id="pz213664" otherprops="pivotal"><xref href="#topic3" type="topic" format="dita"/></li>
<li otherprops="pivotal"><xref href="#topic_eqm_klx_hw" format="dita"/></li>
<li id="pz213668" otherprops="pivotal"><xref href="#topic6" type="topic" format="dita"/></li>
format="dita"/>.</p>
</body>
</topic>
+ <topic id="topic_khs_klx_g3b">
+ <title>About Deep Learning</title>
+ <body>
+ <p>Deep learning is a type of machine learning, originally inspired by biology of the brain,
+ that uses a class of algorithms called artificial neural networks. Given the important use
+ cases that can be effectively addressed with deep learning, it is starting to become a more
+ important part of enterprise computing. </p>
+ <p>Deep learning support for Keras and TensorFlow was added to Apache MADlib starting with the
+ 1.16 release. Refer to the following documents for more information about deep learning on
+ Greenplum using Apache MADlib:<ul id="ul_kyh_rlx_g3b">
+ <li><xref href="http://madlib.apache.org/docs/latest/group__grp__dl.html" format="html"
+ scope="external">MADlib user documentation</xref></li>
+ <li><xref href="https://cwiki.apache.org/confluence/display/MADLIB/Deep+Learning"
+ format="html" scope="external">Supported libraries and configuration
+ instructions</xref></li>
+ </ul></p>
+ </body>
+ </topic>
<topic id="topic3" xml:lang="en" otherprops="pivotal">
<title id="pz214493">Installing MADlib</title>
<body>
