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| <h2 title="Class TasteHadoopUtils" class="title">Class TasteHadoopUtils</h2> |
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| <pre>public final class <span class="typeNameLabel">TasteHadoopUtils</span> |
| extends <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre> |
| <div class="block">Some helper methods for the hadoop-related stuff in org.apache.mahout.cf.taste</div> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
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| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/cf/taste/hadoop/TasteHadoopUtils.html#ITEM_ID_POS">ITEM_ID_POS</a></span></code> </td> |
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| <tr class="rowColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/cf/taste/hadoop/TasteHadoopUtils.html#USER_ID_POS">USER_ID_POS</a></span></code> </td> |
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| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/cf/taste/hadoop/TasteHadoopUtils.html#idToIndex-long-">idToIndex</a></span>(long id)</code> |
| <div class="block">Maps a long to an int with range of 0 to Integer.MAX_VALUE-1</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static int</code></td> |
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| boolean usesLongIDs)</code> </td> |
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| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/map/OpenIntLongHashMap.html?is-external=true" title="class or interface in org.apache.mahout.math.map">OpenIntLongHashMap</a></code></td> |
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| org.apache.hadoop.conf.Configuration conf)</code> |
| <div class="block">Reads a binary mapping file</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>static <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>[]</code></td> |
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| <div class="block">Splits a preference data line into string tokens</div> |
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| <pre>public static final int USER_ID_POS</pre> |
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| <dd><a href="../../../../../../constant-values.html#org.apache.mahout.cf.taste.hadoop.TasteHadoopUtils.USER_ID_POS">Constant Field Values</a></dd> |
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| <pre>public static final int ITEM_ID_POS</pre> |
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| <div class="block">Splits a preference data line into string tokens</div> |
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| <pre>public static int idToIndex(long id)</pre> |
| <div class="block">Maps a long to an int with range of 0 to Integer.MAX_VALUE-1</div> |
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| boolean usesLongIDs)</pre> |
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| <pre>public static <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/map/OpenIntLongHashMap.html?is-external=true" title="class or interface in org.apache.mahout.math.map">OpenIntLongHashMap</a> readIDIndexMap(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> idIndexPathStr, |
| org.apache.hadoop.conf.Configuration conf)</pre> |
| <div class="block">Reads a binary mapping file</div> |
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