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| <h2 title="Class TextValueEncoder" class="title">Class TextValueEncoder</h2> |
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| <li><a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html" title="class in org.apache.mahout.vectorizer.encoders">org.apache.mahout.vectorizer.encoders.FeatureVectorEncoder</a></li> |
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| <li>org.apache.mahout.vectorizer.encoders.TextValueEncoder</li> |
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| <dt>Direct Known Subclasses:</dt> |
| <dd><a href="../../../../../org/apache/mahout/vectorizer/encoders/CachingTextValueEncoder.html" title="class in org.apache.mahout.vectorizer.encoders">CachingTextValueEncoder</a>, <a href="../../../../../org/apache/mahout/vectorizer/encoders/LuceneTextValueEncoder.html" title="class in org.apache.mahout.vectorizer.encoders">LuceneTextValueEncoder</a></dd> |
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| <pre>public class <span class="typeNameLabel">TextValueEncoder</span> |
| extends <a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html" title="class in org.apache.mahout.vectorizer.encoders">FeatureVectorEncoder</a></pre> |
| <div class="block">Encodes text that is tokenized on non-alphanum separators. Each word is encoded using a |
| settable encoder which is by default an StaticWordValueEncoder which gives all |
| words the same weight.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../org/apache/mahout/vectorizer/encoders/LuceneTextValueEncoder.html" title="class in org.apache.mahout.vectorizer.encoders"><code>LuceneTextValueEncoder</code></a></dd> |
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| <code><a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html#CONTINUOUS_VALUE_HASH_SEED">CONTINUOUS_VALUE_HASH_SEED</a>, <a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html#WORD_LIKE_VALUE_HASH_SEED">WORD_LIKE_VALUE_HASH_SEED</a></code></li> |
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| <th class="colOne" scope="col">Constructor and Description</th> |
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| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/mahout/vectorizer/encoders/TextValueEncoder.html#TextValueEncoder-java.lang.String-">TextValueEncoder</a></span>(<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> name)</code> </td> |
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| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
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| <th class="colLast" scope="col">Method and Description</th> |
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| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/mahout/vectorizer/encoders/TextValueEncoder.html#addText-byte:A-">addText</a></span>(byte[] originalForm)</code> |
| <div class="block">Adds text to the internal word counter, but delays converting it to vector |
| form until flush is called.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/mahout/vectorizer/encoders/TextValueEncoder.html#addText-java.lang.CharSequence-">addText</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/CharSequence.html?is-external=true" title="class or interface in java.lang">CharSequence</a> text)</code> |
| <div class="block">Adds text to the internal word counter, but delays converting it to vector |
| form until flush is called.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/mahout/vectorizer/encoders/TextValueEncoder.html#addToVector-byte:A-double-org.apache.mahout.math.Vector-">addToVector</a></span>(byte[] originalForm, |
| double weight, |
| <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/Vector.html?is-external=true" title="class or interface in org.apache.mahout.math">Vector</a> data)</code> |
| <div class="block">Adds a value to a vector after tokenizing it by splitting on non-alphanum characters.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code><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> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/mahout/vectorizer/encoders/TextValueEncoder.html#asString-java.lang.String-">asString</a></span>(<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> originalForm)</code> |
| <div class="block">Converts a value into a form that would help a human understand the internals of how the value |
| is being interpreted.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/mahout/vectorizer/encoders/TextValueEncoder.html#flush-double-org.apache.mahout.math.Vector-">flush</a></span>(double weight, |
| <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/Vector.html?is-external=true" title="class or interface in org.apache.mahout.math">Vector</a> data)</code> |
| <div class="block">Adds all of the tokens that we counted up to a vector.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>protected <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a><<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/mahout/vectorizer/encoders/TextValueEncoder.html#hashesForProbe-byte:A-int-java.lang.String-int-">hashesForProbe</a></span>(byte[] originalForm, |
| int dataSize, |
| <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> name, |
| int probe)</code> |
| <div class="block">Returns all of the hashes for this probe.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>protected int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/mahout/vectorizer/encoders/TextValueEncoder.html#hashForProbe-byte:A-int-java.lang.String-int-">hashForProbe</a></span>(byte[] originalForm, |
| int dataSize, |
| <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> name, |
| int probe)</code> |
| <div class="block">Provides the unique hash for a particular probe.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/mahout/vectorizer/encoders/TextValueEncoder.html#setWordEncoder-org.apache.mahout.vectorizer.encoders.FeatureVectorEncoder-">setWordEncoder</a></span>(<a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html" title="class in org.apache.mahout.vectorizer.encoders">FeatureVectorEncoder</a> wordEncoder)</code> </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>protected <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a><<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> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/mahout/vectorizer/encoders/TextValueEncoder.html#tokenize-java.lang.CharSequence-">tokenize</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/CharSequence.html?is-external=true" title="class or interface in java.lang">CharSequence</a> originalForm)</code> |
| <div class="block">Tokenizes a string using the simplest method.</div> |
| </td> |
| </tr> |
| </table> |
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| <li class="blockList"><a name="methods.inherited.from.class.org.apache.mahout.vectorizer.encoders.FeatureVectorEncoder"> |
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| </a> |
| <h3>Methods inherited from class org.apache.mahout.vectorizer.encoders.<a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html" title="class in org.apache.mahout.vectorizer.encoders">FeatureVectorEncoder</a></h3> |
| <code><a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html#addToVector-byte:A-org.apache.mahout.math.Vector-">addToVector</a>, <a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html#addToVector-java.lang.String-double-org.apache.mahout.math.Vector-">addToVector</a>, <a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html#addToVector-java.lang.String-org.apache.mahout.math.Vector-">addToVector</a>, <a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html#bytesForString-java.lang.String-">bytesForString</a>, <a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html#getName--">getName</a>, <a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html#getProbes--">getProbes</a>, <a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html#getWeight-byte:A-double-">getWeight</a>, <a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html#hash-byte:A-byte:A-int-int-">hash</a>, <a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html#hash-byte:A-int-int-">hash</a>, <a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html#hash-java.lang.String-int-int-">hash</a>, <a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html#hash-java.lang.String-java.lang.String-int-int-">hash</a>, <a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html#hash-java.lang.String-java.lang.String-java.lang.String-java.lang.String-int-int-">hash</a>, <a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html#isTraceEnabled--">isTraceEnabled</a>, <a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html#setProbes-int-">setProbes</a>, <a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html#setTraceDictionary-java.util.Map-">setTraceDictionary</a>, <a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html#trace-byte:A-int-">trace</a>, <a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html#trace-java.lang.String-int-">trace</a></code></li> |
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| <code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li> |
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| <h4>TextValueEncoder</h4> |
| <pre>public TextValueEncoder(<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> name)</pre> |
| </li> |
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| <a name="addToVector-byte:A-double-org.apache.mahout.math.Vector-"> |
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| <h4>addToVector</h4> |
| <pre>public void addToVector(byte[] originalForm, |
| double weight, |
| <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/Vector.html?is-external=true" title="class or interface in org.apache.mahout.math">Vector</a> data)</pre> |
| <div class="block">Adds a value to a vector after tokenizing it by splitting on non-alphanum characters.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html#addToVector-byte:A-double-org.apache.mahout.math.Vector-">addToVector</a></code> in class <code><a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html" title="class in org.apache.mahout.vectorizer.encoders">FeatureVectorEncoder</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>originalForm</code> - The original form of the value as a string.</dd> |
| <dd><code>data</code> - The vector to which the value should be added.</dd> |
| </dl> |
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| </ul> |
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| <h4>addText</h4> |
| <pre>public void addText(byte[] originalForm)</pre> |
| <div class="block">Adds text to the internal word counter, but delays converting it to vector |
| form until flush is called.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>originalForm</code> - The original text encoded as UTF-8</dd> |
| </dl> |
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| <h4>addText</h4> |
| <pre>public void addText(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/CharSequence.html?is-external=true" title="class or interface in java.lang">CharSequence</a> text)</pre> |
| <div class="block">Adds text to the internal word counter, but delays converting it to vector |
| form until flush is called.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>text</code> - The original text encoded as UTF-8</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="flush-double-org.apache.mahout.math.Vector-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>flush</h4> |
| <pre>public void flush(double weight, |
| <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/Vector.html?is-external=true" title="class or interface in org.apache.mahout.math">Vector</a> data)</pre> |
| <div class="block">Adds all of the tokens that we counted up to a vector.</div> |
| </li> |
| </ul> |
| <a name="hashForProbe-byte:A-int-java.lang.String-int-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>hashForProbe</h4> |
| <pre>protected int hashForProbe(byte[] originalForm, |
| int dataSize, |
| <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> name, |
| int probe)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html#hashForProbe-byte:A-int-java.lang.String-int-">FeatureVectorEncoder</a></code></span></div> |
| <div class="block">Provides the unique hash for a particular probe. For all encoders except text, this |
| is all that is needed and the default implementation of hashesForProbe will do the right |
| thing. For text and similar values, hashesForProbe should be over-ridden and this method |
| should not be used.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html#hashForProbe-byte:A-int-java.lang.String-int-">hashForProbe</a></code> in class <code><a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html" title="class in org.apache.mahout.vectorizer.encoders">FeatureVectorEncoder</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>originalForm</code> - The original byte array value</dd> |
| <dd><code>dataSize</code> - The length of the vector being encoded</dd> |
| <dd><code>name</code> - The name of the variable being encoded</dd> |
| <dd><code>probe</code> - The probe number</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The hash of the current probe</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="hashesForProbe-byte:A-int-java.lang.String-int-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>hashesForProbe</h4> |
| <pre>protected <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a><<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>> hashesForProbe(byte[] originalForm, |
| int dataSize, |
| <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> name, |
| int probe)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html#hashesForProbe-byte:A-int-java.lang.String-int-">FeatureVectorEncoder</a></code></span></div> |
| <div class="block">Returns all of the hashes for this probe. For most encoders, this is a singleton, but |
| for text, many hashes are returned, one for each word (unique or not). Most implementations |
| should only implement hashForProbe for simplicity.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html#hashesForProbe-byte:A-int-java.lang.String-int-">hashesForProbe</a></code> in class <code><a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html" title="class in org.apache.mahout.vectorizer.encoders">FeatureVectorEncoder</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>originalForm</code> - The original byte array value.</dd> |
| <dd><code>dataSize</code> - The length of the vector being encoded</dd> |
| <dd><code>name</code> - The name of the variable being encoded</dd> |
| <dd><code>probe</code> - The probe number</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>an Iterable of the hashes</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="tokenize-java.lang.CharSequence-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>tokenize</h4> |
| <pre>protected <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a><<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>> tokenize(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/CharSequence.html?is-external=true" title="class or interface in java.lang">CharSequence</a> originalForm)</pre> |
| <div class="block">Tokenizes a string using the simplest method. This should be over-ridden for more subtle |
| tokenization.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../org/apache/mahout/vectorizer/encoders/LuceneTextValueEncoder.html" title="class in org.apache.mahout.vectorizer.encoders"><code>LuceneTextValueEncoder</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="asString-java.lang.String-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>asString</h4> |
| <pre>public <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> asString(<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> originalForm)</pre> |
| <div class="block">Converts a value into a form that would help a human understand the internals of how the value |
| is being interpreted. For text-like things, this is likely to be a list of the terms found with |
| associated weights (if any).</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html#asString-java.lang.String-">asString</a></code> in class <code><a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html" title="class in org.apache.mahout.vectorizer.encoders">FeatureVectorEncoder</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>originalForm</code> - The original form of the value as a string.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>A string that a human can read.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="setWordEncoder-org.apache.mahout.vectorizer.encoders.FeatureVectorEncoder-"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>setWordEncoder</h4> |
| <pre>public final void setWordEncoder(<a href="../../../../../org/apache/mahout/vectorizer/encoders/FeatureVectorEncoder.html" title="class in org.apache.mahout.vectorizer.encoders">FeatureVectorEncoder</a> wordEncoder)</pre> |
| </li> |
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