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<h1>BasePreparator</h1><h3><span class="morelinks"><div>Related Doc:
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<div id="comment" class="fullcommenttop"><div class="comment cmt"><p>:: DeveloperApi ::
Base class of all preparator controller classes</p><p>Dev note: Probably will add an extra parameter for ad hoc JSON formatter
</p></div><dl class="paramcmts block"><dt class="tparam">TD</dt><dd class="cmt"><p>Training data class</p></dd><dt class="tparam">PD</dt><dd class="cmt"><p>Prepared data class</p></dd></dl><dl class="attributes block"> <dt>Annotations</dt><dd>
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<p class="shortcomment cmt">:: DeveloperApi ::
Engine developers should not use this directly.</p><div class="fullcomment"><div class="comment cmt"><p>:: DeveloperApi ::
Engine developers should not use this directly. This is called by training
workflow to prepare data before handing it over to algorithm
</p></div><dl class="paramcmts block"><dt class="param">sc</dt><dd class="cmt"><p>Spark context</p></dd><dt class="param">td</dt><dd class="cmt"><p>Training data</p></dd><dt>returns</dt><dd class="cmt"><p>Prepared data</p></dd></dl><dl class="attributes block"> <dt>Annotations</dt><dd>
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