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| <h1 title="Package" class="title">Package org.apache.mahout.cf.taste.impl.eval</h1> |
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| <th class="colFirst" scope="col">Class</th> |
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| <td class="colFirst"><a href="../../../../../../../org/apache/mahout/cf/taste/impl/eval/AbstractDifferenceRecommenderEvaluator.html" title="class in org.apache.mahout.cf.taste.impl.eval">AbstractDifferenceRecommenderEvaluator</a></td> |
| <td class="colLast"> |
| <div class="block">Abstract superclass of a couple implementations, providing shared functionality.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/mahout/cf/taste/impl/eval/AverageAbsoluteDifferenceRecommenderEvaluator.html" title="class in org.apache.mahout.cf.taste.impl.eval">AverageAbsoluteDifferenceRecommenderEvaluator</a></td> |
| <td class="colLast"> |
| <div class="block"> |
| A <a href="../../../../../../../org/apache/mahout/cf/taste/eval/RecommenderEvaluator.html" title="interface in org.apache.mahout.cf.taste.eval"><code>RecommenderEvaluator</code></a> which computes the average absolute |
| difference between predicted and actual ratings for users.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/mahout/cf/taste/impl/eval/GenericRecommenderIRStatsEvaluator.html" title="class in org.apache.mahout.cf.taste.impl.eval">GenericRecommenderIRStatsEvaluator</a></td> |
| <td class="colLast"> |
| <div class="block"> |
| For each user, these implementation determine the top <code>n</code> preferences, then evaluate the IR |
| statistics based on a <a href="../../../../../../../org/apache/mahout/cf/taste/model/DataModel.html" title="interface in org.apache.mahout.cf.taste.model"><code>DataModel</code></a> that does not have these values.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/mahout/cf/taste/impl/eval/GenericRelevantItemsDataSplitter.html" title="class in org.apache.mahout.cf.taste.impl.eval">GenericRelevantItemsDataSplitter</a></td> |
| <td class="colLast"> |
| <div class="block">Picks relevant items to be those with the strongest preference, and |
| includes the other users' preferences in full.</div> |
| </td> |
| </tr> |
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| <td class="colFirst"><a href="../../../../../../../org/apache/mahout/cf/taste/impl/eval/IRStatisticsImpl.html" title="class in org.apache.mahout.cf.taste.impl.eval">IRStatisticsImpl</a></td> |
| <td class="colLast"> </td> |
| </tr> |
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| <td class="colFirst"><a href="../../../../../../../org/apache/mahout/cf/taste/impl/eval/LoadEvaluator.html" title="class in org.apache.mahout.cf.taste.impl.eval">LoadEvaluator</a></td> |
| <td class="colLast"> |
| <div class="block">Simple helper class for running load on a Recommender.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/mahout/cf/taste/impl/eval/LoadStatistics.html" title="class in org.apache.mahout.cf.taste.impl.eval">LoadStatistics</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/mahout/cf/taste/impl/eval/OrderBasedRecommenderEvaluator.html" title="class in org.apache.mahout.cf.taste.impl.eval">OrderBasedRecommenderEvaluator</a></td> |
| <td class="colLast"> |
| <div class="block">Evaluate recommender by comparing order of all raw prefs with order in |
| recommender's output for that user.</div> |
| </td> |
| </tr> |
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| <td class="colFirst"><a href="../../../../../../../org/apache/mahout/cf/taste/impl/eval/RMSRecommenderEvaluator.html" title="class in org.apache.mahout.cf.taste.impl.eval">RMSRecommenderEvaluator</a></td> |
| <td class="colLast"> |
| <div class="block"> |
| A <a href="../../../../../../../org/apache/mahout/cf/taste/eval/RecommenderEvaluator.html" title="interface in org.apache.mahout.cf.taste.eval"><code>RecommenderEvaluator</code></a> which computes the "root mean squared" |
| difference between predicted and actual ratings for users.</div> |
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