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<span class="name">ZeroMetric</span><span class="tparams">[<span name="EI">EI</span>, <span name="Q">Q</span>, <span name="P">P</span>, <span name="A">A</span>]</span><span class="result"> extends <a href="Metric.html" class="extype" name="org.apache.predictionio.controller.Metric">Metric</a>[<span class="extype" name="org.apache.predictionio.controller.ZeroMetric.EI">EI</span>, <span class="extype" name="org.apache.predictionio.controller.ZeroMetric.Q">Q</span>, <span class="extype" name="org.apache.predictionio.controller.ZeroMetric.P">P</span>, <span class="extype" name="org.apache.predictionio.controller.ZeroMetric.A">A</span>, <a href="http://www.scala-lang.org/api/2.11.12/index.html#scala.Double" class="extype" target="_top">Double</a>]</span>
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<div id="comment" class="fullcommenttop"><div class="comment cmt"><p>Returns zero. Useful as a placeholder during evaluation development when not all components are
implemented.</p></div><dl class="paramcmts block"><dt class="tparam">EI</dt><dd class="cmt"><p>Evaluation information</p></dd><dt class="tparam">Q</dt><dd class="cmt"><p>Query</p></dd><dt class="tparam">P</dt><dd class="cmt"><p>Predicted result</p></dd><dt class="tparam">A</dt><dd class="cmt"><p>Actual result</p></dd></dl><div class="toggleContainer block">
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<p class="shortcomment cmt">Calculates the result of this <a href="Metric.html" class="extype" name="org.apache.predictionio.controller.Metric">Metric</a>.</p><div class="fullcomment"><div class="comment cmt"><p>Calculates the result of this <a href="Metric.html" class="extype" name="org.apache.predictionio.controller.Metric">Metric</a>.</p></div><dl class="attributes block"> <dt>Definition Classes</dt><dd><a href="" class="extype" name="org.apache.predictionio.controller.ZeroMetric">ZeroMetric</a><a href="Metric.html" class="extype" name="org.apache.predictionio.controller.Metric">Metric</a></dd></dl></div>
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