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From mha...@apache.org
Subject [29/51] [partial] incubator-datafu git commit: DATAFU-110 Update website for 1.3.0 release
Date Tue, 17 Nov 2015 23:50:15 GMT
http://git-wip-us.apache.org/repos/asf/incubator-datafu/blob/158f9991/site/source/docs/datafu/1.3.0/datafu/pig/stats/entropy/CondEntropy.html
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+<div class="header">
+<div class="subTitle">datafu.pig.stats.entropy</div>
+<h2 title="Class CondEntropy" class="title">Class CondEntropy</h2>
+</div>
+<div class="contentContainer">
+<ul class="inheritance">
+<li>java.lang.Object</li>
+<li>
+<ul class="inheritance">
+<li>org.apache.pig.EvalFunc&lt;T&gt;</li>
+<li>
+<ul class="inheritance">
+<li>org.apache.pig.AccumulatorEvalFunc&lt;java.lang.Double&gt;</li>
+<li>
+<ul class="inheritance">
+<li>datafu.pig.stats.entropy.CondEntropy</li>
+</ul>
+</li>
+</ul>
+</li>
+</ul>
+</li>
+</ul>
+<div class="description">
+<ul class="blockList">
+<li class="blockList">
+<dl>
+<dt>All Implemented Interfaces:</dt>
+<dd>org.apache.pig.Accumulator&lt;java.lang.Double&gt;</dd>
+</dl>
+<hr>
+<br>
+<pre>public class <span class="typeNameLabel">CondEntropy</span>
+extends org.apache.pig.AccumulatorEvalFunc&lt;java.lang.Double&gt;</pre>
+<div class="block">Calculate conditional entropy H(Y|X) of random variables X and Y following conditional entropy's
+ <a href="http://en.wikipedia.org/wiki/Conditional_entropy" target="_blank">wiki definition</a>,
+ X is the conditional variable and Y is the variable that conditions on X.
+
+ <p>
+ Each tuple of the input bag has 2 fields, the 1st field is an object instance of variable X and
+ the 2nd field is an object instance of variable Y. An exception will be thrown if the number of fields is not 2.
+ </p>
+
+ <p>
+ This UDF's constructor definition and parameters are the same as that of <a href="../../../../datafu/pig/stats/entropy/Entropy.html" title="class in datafu.pig.stats.entropy"><code>Entropy</code></a>
+ </p>
+
+ Note:
+ <ul>
+     <li>The input bag to this UDF must be <b>sorted</b> on X and Y, with X in the first sort order.
+     An exception will be thrown if the input bag is not sorted.
+     <li>The returned entropy value is of double type.
+ </ul>
+
+ <p>
+ How to use:
+ </p>
+
+ <p>
+ This UDF calculates conditional entropy given raw data tuples of X and Y without the need to pre-compute per tuple occurrence frequency.
+ </p>
+
+ <p>
+ It could be used in a nested FOREACH after a GROUP BY, in which we sort the inner bag and use the sorted bag as this UDF's input.
+ </p>
+
+ Example:
+ <pre>
+ <code>
+ --define empirical conditional entropy with Euler's number as the logarithm base
+ define CondEntropy datafu.pig.stats.entropy.CondEntropy();
+
+ input = LOAD 'input' AS (grp: chararray, valX: double, valY: double);
+
+ -- calculate conditional entropy H(Y|X) in each group
+ input_group_g = GROUP input BY grp;
+ entropy_group = FOREACH input_group_g {
+   input_val = input.(valX, valY)
+   input_ordered = ORDER input_val BY $0, $1;
+   GENERATE FLATTEN(group) AS group, CondEntropy(input_ordered) AS cond_entropy; 
+ }
+ </code>
+ </pre>
+
+ Use case to calculate mutual information:
+ <pre>
+ <code>
+ ------------
+ -- calculate mutual information I(X, Y) using conditional entropy UDF and entropy UDF
+ -- I(X, Y) = H(Y) - H(Y|X)
+ ------------
+
+ define CondEntropy datafu.pig.stats.entropy.CondEntropy();
+ define Entropy datafu.pig.stats.entropy.Entropy();
+
+ input = LOAD 'input' AS (grp: chararray, valX: double, valY: double);
+
+ -- calculate the I(X,Y) in each group
+ input_group_g = GROUP input BY grp;
+ mutual_information = FOREACH input_group_g {
+      input_val_x_y = input.(valX, valY);
+      input_val_x_y_ordered = ORDER input_val_x_y BY $0,$1;
+      input_val_y = input.valY;
+      input_val_y_ordered = ORDER input_val_y BY $0;
+      cond_h_x_y = CondEntropy(input_val_x_y_ordered);
+      h_y = Entropy(input_val_y_ordered);
+      GENERATE FLATTEN(group), h_y - cond_h_x_y;
+ }
+ </code>
+ </pre></div>
+<dl>
+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href="../../../../datafu/pig/stats/entropy/Entropy.html" title="class in datafu.pig.stats.entropy"><code>Entropy</code></a></dd>
+</dl>
+</li>
+</ul>
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+<h3>Nested classes/interfaces inherited from class&nbsp;org.apache.pig.EvalFunc</h3>
+<code>org.apache.pig.EvalFunc.SchemaType</code></li>
+</ul>
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+<h3>Fields inherited from class&nbsp;org.apache.pig.EvalFunc</h3>
+<code>log, pigLogger, reporter, returnType</code></li>
+</ul>
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+</ul>
+<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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+<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
+<tr>
+<th class="colOne" scope="col">Constructor and Description</th>
+</tr>
+<tr class="altColor">
+<td class="colOne"><code><span class="memberNameLink"><a href="../../../../datafu/pig/stats/entropy/CondEntropy.html#CondEntropy--">CondEntropy</a></span>()</code>&nbsp;</td>
+</tr>
+<tr class="rowColor">
+<td class="colOne"><code><span class="memberNameLink"><a href="../../../../datafu/pig/stats/entropy/CondEntropy.html#CondEntropy-java.lang.String-">CondEntropy</a></span>(java.lang.String&nbsp;type)</code>&nbsp;</td>
+</tr>
+<tr class="altColor">
+<td class="colOne"><code><span class="memberNameLink"><a href="../../../../datafu/pig/stats/entropy/CondEntropy.html#CondEntropy-java.lang.String-java.lang.String-">CondEntropy</a></span>(java.lang.String&nbsp;type,
+           java.lang.String&nbsp;base)</code>&nbsp;</td>
+</tr>
+</table>
+</li>
+</ul>
+<!-- ========== METHOD SUMMARY =========== -->
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+<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
+<tr>
+<th class="colFirst" scope="col">Modifier and Type</th>
+<th class="colLast" scope="col">Method and Description</th>
+</tr>
+<tr id="i0" class="altColor">
+<td class="colFirst"><code>void</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../datafu/pig/stats/entropy/CondEntropy.html#accumulate-org.apache.pig.data.Tuple-">accumulate</a></span>(org.apache.pig.data.Tuple&nbsp;input)</code>&nbsp;</td>
+</tr>
+<tr id="i1" class="rowColor">
+<td class="colFirst"><code>void</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../datafu/pig/stats/entropy/CondEntropy.html#cleanup--">cleanup</a></span>()</code>&nbsp;</td>
+</tr>
+<tr id="i2" class="altColor">
+<td class="colFirst"><code>java.lang.Double</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../datafu/pig/stats/entropy/CondEntropy.html#getValue--">getValue</a></span>()</code>&nbsp;</td>
+</tr>
+<tr id="i3" class="rowColor">
+<td class="colFirst"><code>org.apache.pig.impl.logicalLayer.schema.Schema</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../datafu/pig/stats/entropy/CondEntropy.html#outputSchema-org.apache.pig.impl.logicalLayer.schema.Schema-">outputSchema</a></span>(org.apache.pig.impl.logicalLayer.schema.Schema&nbsp;input)</code>&nbsp;</td>
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+<ul class="blockList">
+<li class="blockList"><a name="methods.inherited.from.class.org.apache.pig.AccumulatorEvalFunc">
+<!--   -->
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+<h3>Methods inherited from class&nbsp;org.apache.pig.AccumulatorEvalFunc</h3>
+<code>exec</code></li>
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+<h3>Methods inherited from class&nbsp;org.apache.pig.EvalFunc</h3>
+<code>allowCompileTimeCalculation, finish, getArgToFuncMapping, getCacheFiles, getInputSchema, getLogger, getPigLogger, getReporter, getReturnType, getSchemaName, getSchemaType, getShipFiles, isAsynchronous, progress, setInputSchema, setPigLogger, setReporter, setUDFContextSignature, warn</code></li>
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+<li class="blockList"><a name="constructor.detail">
+<!--   -->
+</a>
+<h3>Constructor Detail</h3>
+<a name="CondEntropy--">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>CondEntropy</h4>
+<pre>public&nbsp;CondEntropy()
+            throws org.apache.pig.backend.executionengine.ExecException</pre>
+<dl>
+<dt><span class="throwsLabel">Throws:</span></dt>
+<dd><code>org.apache.pig.backend.executionengine.ExecException</code></dd>
+</dl>
+</li>
+</ul>
+<a name="CondEntropy-java.lang.String-">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>CondEntropy</h4>
+<pre>public&nbsp;CondEntropy(java.lang.String&nbsp;type)
+            throws org.apache.pig.backend.executionengine.ExecException</pre>
+<dl>
+<dt><span class="throwsLabel">Throws:</span></dt>
+<dd><code>org.apache.pig.backend.executionengine.ExecException</code></dd>
+</dl>
+</li>
+</ul>
+<a name="CondEntropy-java.lang.String-java.lang.String-">
+<!--   -->
+</a>
+<ul class="blockListLast">
+<li class="blockList">
+<h4>CondEntropy</h4>
+<pre>public&nbsp;CondEntropy(java.lang.String&nbsp;type,
+                   java.lang.String&nbsp;base)
+            throws org.apache.pig.backend.executionengine.ExecException</pre>
+<dl>
+<dt><span class="throwsLabel">Throws:</span></dt>
+<dd><code>org.apache.pig.backend.executionengine.ExecException</code></dd>
+</dl>
+</li>
+</ul>
+</li>
+</ul>
+<!-- ============ METHOD DETAIL ========== -->
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+<li class="blockList"><a name="method.detail">
+<!--   -->
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+<h3>Method Detail</h3>
+<a name="accumulate-org.apache.pig.data.Tuple-">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>accumulate</h4>
+<pre>public&nbsp;void&nbsp;accumulate(org.apache.pig.data.Tuple&nbsp;input)
+                throws java.io.IOException</pre>
+<dl>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code>accumulate</code>&nbsp;in interface&nbsp;<code>org.apache.pig.Accumulator&lt;java.lang.Double&gt;</code></dd>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code>accumulate</code>&nbsp;in class&nbsp;<code>org.apache.pig.AccumulatorEvalFunc&lt;java.lang.Double&gt;</code></dd>
+<dt><span class="throwsLabel">Throws:</span></dt>
+<dd><code>java.io.IOException</code></dd>
+</dl>
+</li>
+</ul>
+<a name="getValue--">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>getValue</h4>
+<pre>public&nbsp;java.lang.Double&nbsp;getValue()</pre>
+<dl>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code>getValue</code>&nbsp;in interface&nbsp;<code>org.apache.pig.Accumulator&lt;java.lang.Double&gt;</code></dd>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code>getValue</code>&nbsp;in class&nbsp;<code>org.apache.pig.AccumulatorEvalFunc&lt;java.lang.Double&gt;</code></dd>
+</dl>
+</li>
+</ul>
+<a name="cleanup--">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>cleanup</h4>
+<pre>public&nbsp;void&nbsp;cleanup()</pre>
+<dl>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code>cleanup</code>&nbsp;in interface&nbsp;<code>org.apache.pig.Accumulator&lt;java.lang.Double&gt;</code></dd>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code>cleanup</code>&nbsp;in class&nbsp;<code>org.apache.pig.AccumulatorEvalFunc&lt;java.lang.Double&gt;</code></dd>
+</dl>
+</li>
+</ul>
+<a name="outputSchema-org.apache.pig.impl.logicalLayer.schema.Schema-">
+<!--   -->
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+<ul class="blockListLast">
+<li class="blockList">
+<h4>outputSchema</h4>
+<pre>public&nbsp;org.apache.pig.impl.logicalLayer.schema.Schema&nbsp;outputSchema(org.apache.pig.impl.logicalLayer.schema.Schema&nbsp;input)</pre>
+<dl>
+<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
+<dd><code>outputSchema</code>&nbsp;in class&nbsp;<code>org.apache.pig.EvalFunc&lt;java.lang.Double&gt;</code></dd>
+</dl>
+</li>
+</ul>
+</li>
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+<li>java.lang.Object</li>
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+<pre>public static class <span class="typeNameLabel">EmpiricalCountEntropy.Final</span>
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http://git-wip-us.apache.org/repos/asf/incubator-datafu/blob/158f9991/site/source/docs/datafu/1.3.0/datafu/pig/stats/entropy/EmpiricalCountEntropy.Initial.html
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diff --git a/site/source/docs/datafu/1.3.0/datafu/pig/stats/entropy/EmpiricalCountEntropy.Initial.html b/site/source/docs/datafu/1.3.0/datafu/pig/stats/entropy/EmpiricalCountEntropy.Initial.html
new file mode 100644
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--- /dev/null
+++ b/site/source/docs/datafu/1.3.0/datafu/pig/stats/entropy/EmpiricalCountEntropy.Initial.html
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+<div class="subTitle">datafu.pig.stats.entropy</div>
+<h2 title="Class EmpiricalCountEntropy.Initial" class="title">Class EmpiricalCountEntropy.Initial</h2>
+</div>
+<div class="contentContainer">
+<ul class="inheritance">
+<li>java.lang.Object</li>
+<li>
+<ul class="inheritance">
+<li>org.apache.pig.EvalFunc&lt;org.apache.pig.data.Tuple&gt;</li>
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+<ul class="inheritance">
+<li>datafu.pig.stats.entropy.EmpiricalCountEntropy.Initial</li>
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+</dl>
+<hr>
+<br>
+<pre>public static class <span class="typeNameLabel">EmpiricalCountEntropy.Initial</span>
+extends org.apache.pig.EvalFunc&lt;org.apache.pig.data.Tuple&gt;</pre>
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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="../../../../datafu/pig/stats/entropy/EmpiricalCountEntropy.Initial.html#Initial--">Initial</a></span>()</code>&nbsp;</td>
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+<dd><code>exec</code>&nbsp;in class&nbsp;<code>org.apache.pig.EvalFunc&lt;org.apache.pig.data.Tuple&gt;</code></dd>
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http://git-wip-us.apache.org/repos/asf/incubator-datafu/blob/158f9991/site/source/docs/datafu/1.3.0/datafu/pig/stats/entropy/EmpiricalCountEntropy.Intermediate.html
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diff --git a/site/source/docs/datafu/1.3.0/datafu/pig/stats/entropy/EmpiricalCountEntropy.Intermediate.html b/site/source/docs/datafu/1.3.0/datafu/pig/stats/entropy/EmpiricalCountEntropy.Intermediate.html
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+<h2 title="Class EmpiricalCountEntropy.Intermediate" class="title">Class EmpiricalCountEntropy.Intermediate</h2>
+</div>
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+<ul class="inheritance">
+<li>java.lang.Object</li>
+<li>
+<ul class="inheritance">
+<li>org.apache.pig.EvalFunc&lt;org.apache.pig.data.Tuple&gt;</li>
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+<li>datafu.pig.stats.entropy.EmpiricalCountEntropy.Intermediate</li>
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+</dl>
+<hr>
+<br>
+<pre>public static class <span class="typeNameLabel">EmpiricalCountEntropy.Intermediate</span>
+extends org.apache.pig.EvalFunc&lt;org.apache.pig.data.Tuple&gt;</pre>
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+                               throws java.io.IOException</pre>
+<dl>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code>exec</code>&nbsp;in class&nbsp;<code>org.apache.pig.EvalFunc&lt;org.apache.pig.data.Tuple&gt;</code></dd>
+<dt><span class="throwsLabel">Throws:</span></dt>
+<dd><code>java.io.IOException</code></dd>
+</dl>
+</li>
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http://git-wip-us.apache.org/repos/asf/incubator-datafu/blob/158f9991/site/source/docs/datafu/1.3.0/datafu/pig/stats/entropy/EmpiricalCountEntropy.html
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diff --git a/site/source/docs/datafu/1.3.0/datafu/pig/stats/entropy/EmpiricalCountEntropy.html b/site/source/docs/datafu/1.3.0/datafu/pig/stats/entropy/EmpiricalCountEntropy.html
new file mode 100644
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+<div class="header">
+<div class="subTitle">datafu.pig.stats.entropy</div>
+<h2 title="Class EmpiricalCountEntropy" class="title">Class EmpiricalCountEntropy</h2>
+</div>
+<div class="contentContainer">
+<ul class="inheritance">
+<li>java.lang.Object</li>
+<li>
+<ul class="inheritance">
+<li>org.apache.pig.EvalFunc&lt;T&gt;</li>
+<li>
+<ul class="inheritance">
+<li>org.apache.pig.AccumulatorEvalFunc&lt;java.lang.Double&gt;</li>
+<li>
+<ul class="inheritance">
+<li>datafu.pig.stats.entropy.EmpiricalCountEntropy</li>
+</ul>
+</li>
+</ul>
+</li>
+</ul>
+</li>
+</ul>
+<div class="description">
+<ul class="blockList">
+<li class="blockList">
+<dl>
+<dt>All Implemented Interfaces:</dt>
+<dd>org.apache.pig.Accumulator&lt;java.lang.Double&gt;, org.apache.pig.Algebraic</dd>
+</dl>
+<hr>
+<br>
+<pre>public class <span class="typeNameLabel">EmpiricalCountEntropy</span>
+extends org.apache.pig.AccumulatorEvalFunc&lt;java.lang.Double&gt;
+implements org.apache.pig.Algebraic</pre>
+<div class="block">Calculate the empirical entropy of random variable X given its occurrence frequencies, following entropy's
+ <a href="http://en.wikipedia.org/wiki/Entropy_%28information_theory%29" target="_blank">wiki definition</a>.
+
+ <p>
+ This UDF's constructor takes 1 argument: the logarithm base, whose definition is the same as that defined in <a href="../../../../datafu/pig/stats/entropy/Entropy.html" title="class in datafu.pig.stats.entropy"><code>Entropy</code></a>
+ </p>
+
+ Note:
+ <ul>
+     <li>Unlike <a href="../../../../datafu/pig/stats/entropy/Entropy.html" title="class in datafu.pig.stats.entropy"><code>Entropy</code></a>, which calculates entropy from sorted raw data bag in accumulative mode,
+     this UDF calculates entropy from the data's occurrence frequencies which does not need to be sorted, either in accumulative or algebraic mode.</li>
+     <li>Each tuple of the UDF's input bag <b>must only</b> have 1 field, the occurrence frequency of a data instance,
+     and the data type of this field <b>must</b> be int or long. Otherwise, an exception will be thrown.</li>
+     <li>Negative frequency number will be silently discarded and a warning message will be logged in the job's log file.</li>
+     <li>The returned entropy value is of double type.</li>
+ </ul>
+
+ <p>
+ How to use:
+ </p>
+
+ <p>
+ To use this UDF, customer needs to pre-compute the occurrence frequency of each data instance, often in an outer GROUP BY
+ , and then use this UDF to calculate entropy with those frequency numbers in another outer GROUP BY.
+ </p>
+
+ <p>
+ Compared with <a href="../../../../datafu/pig/stats/entropy/Entropy.html" title="class in datafu.pig.stats.entropy"><code>Entropy</code></a>, this UDF is more scalable when we need to handle a very large data set, 
+ since it could distribute computation onto mappers and take advantage of combiners to reduce intermedidate output from mappers to reducers.
+ </p>
+
+ Example:
+ <pre>
+ <code>
+
+ define Entropy datafu.pig.stats.entropy.EmpiricalCountEntropy();
+
+ input = LOAD 'input' AS (val: double);
+
+ -- calculate the occurrence of each instance
+ counts_g = GROUP input BY val;
+ counts = FOREACh counts_g GENERATE COUNT(input) AS cnt;
+
+ -- calculate entropy
+ input_counts_g = GROUP counts ALL;
+ entropy = FOREACH input_counts_g GENERATE Entropy(counts) AS entropy;
+ </code>
+ </pre>
+
+ Use case to calculate mutual information using EmpiricalCountEntropy:
+
+ <pre>
+ <code>
+
+ define Entropy datafu.pig.stats.entropy.EmpiricalCountEntropy();
+
+ input = LOAD 'input' AS (valX: double, valY: double);
+
+ ------------
+ -- calculate mutual information I(X, Y) using entropy
+ -- I(X, Y) = H(X) + H(Y) -  H(X, Y)
+ ------------
+
+ input_x_y_g = GROUP input BY (valX, valY);
+ input_x_y_cnt = FOREACH input_x_y_g GENERATE flatten(group) as (valX, valY), COUNT(input) AS cnt;
+
+ input_x_g = GROUP input_x_y_cnt BY valX;
+ input_x_cnt = FOREACH input_x_g GENERATE flatten(group) as valX, SUM(input_x_y_cnt.cnt) AS cnt;
+
+ input_y_g = GROUP input_x_y_cnt BY valY;
+ input_y_cnt = FOREACH input_y_g GENERATE flatten(group) as valY, SUM(input_x_y_cnt.cnt) AS cnt;
+
+ input_x_y_entropy_g = GROUP input_x_y_cnt ALL;
+ input_x_y_entropy = FOREACH input_x_y_entropy_g {
+                         input_x_y_entropy_cnt = input_x_y_cnt.cnt;
+                         GENERATE Entropy(input_x_y_entropy_cnt) AS x_y_entropy;
+                     }
+
+ input_x_entropy_g = GROUP input_x_cnt ALL;
+ input_x_entropy = FOREACH input_x_entropy_g {
+                         input_x_entropy_cnt = input_x_cnt.cnt;
+                         GENERATE Entropy(input_x_entropy_cnt) AS x_entropy;
+                   }
+
+ input_y_entropy_g = GROUP input_y_cnt ALL;
+ input_y_entropy = FOREACH input_y_entropy_g {
+                         input_y_entropy_cnt = input_y_cnt.cnt;
+                         GENERATE Entropy(input_y_entropy_cnt) AS y_entropy;
+                   }
+
+ input_mi_cross = CROSS input_x_y_entropy, input_x_entropy, input_y_entropy;
+ input_mi = FOREACH input_mi_cross GENERATE (input_x_entropy::x_entropy +
+                                             input_y_entropy::y_entropy - 
+                                             input_x_y_entropy::x_y_entropy) AS mi;
+ </code>
+ </pre></div>
+<dl>
+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href="../../../../datafu/pig/stats/entropy/Entropy.html" title="class in datafu.pig.stats.entropy"><code>Entropy</code></a></dd>
+</dl>
+</li>
+</ul>
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+<!-- ======== NESTED CLASS SUMMARY ======== -->
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+<h3>Nested Class Summary</h3>
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+<caption><span>Nested Classes</span><span class="tabEnd">&nbsp;</span></caption>
+<tr>
+<th class="colFirst" scope="col">Modifier and Type</th>
+<th class="colLast" scope="col">Class and Description</th>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><code>static class&nbsp;</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../datafu/pig/stats/entropy/EmpiricalCountEntropy.Final.html" title="class in datafu.pig.stats.entropy">EmpiricalCountEntropy.Final</a></span></code>&nbsp;</td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><code>static class&nbsp;</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../datafu/pig/stats/entropy/EmpiricalCountEntropy.Initial.html" title="class in datafu.pig.stats.entropy">EmpiricalCountEntropy.Initial</a></span></code>&nbsp;</td>
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+<tr class="altColor">
+<td class="colFirst"><code>static class&nbsp;</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../datafu/pig/stats/entropy/EmpiricalCountEntropy.Intermediate.html" title="class in datafu.pig.stats.entropy">EmpiricalCountEntropy.Intermediate</a></span></code>&nbsp;</td>
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+<code>org.apache.pig.EvalFunc.SchemaType</code></li>
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+<code>log, pigLogger, reporter, returnType</code></li>
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+<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
+<tr>
+<th class="colOne" scope="col">Constructor and Description</th>
+</tr>
+<tr class="altColor">
+<td class="colOne"><code><span class="memberNameLink"><a href="../../../../datafu/pig/stats/entropy/EmpiricalCountEntropy.html#EmpiricalCountEntropy--">EmpiricalCountEntropy</a></span>()</code>&nbsp;</td>
+</tr>
+<tr class="rowColor">
+<td class="colOne"><code><span class="memberNameLink"><a href="../../../../datafu/pig/stats/entropy/EmpiricalCountEntropy.html#EmpiricalCountEntropy-java.lang.String-">EmpiricalCountEntropy</a></span>(java.lang.String&nbsp;base)</code>&nbsp;</td>
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+<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
+<tr>
+<th class="colFirst" scope="col">Modifier and Type</th>
+<th class="colLast" scope="col">Method and Description</th>
+</tr>
+<tr id="i0" class="altColor">
+<td class="colFirst"><code>void</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../datafu/pig/stats/entropy/EmpiricalCountEntropy.html#accumulate-org.apache.pig.data.Tuple-">accumulate</a></span>(org.apache.pig.data.Tuple&nbsp;input)</code>&nbsp;</td>
+</tr>
+<tr id="i1" class="rowColor">
+<td class="colFirst"><code>void</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../datafu/pig/stats/entropy/EmpiricalCountEntropy.html#cleanup--">cleanup</a></span>()</code>&nbsp;</td>
+</tr>
+<tr id="i2" class="altColor">
+<td class="colFirst"><code>protected static org.apache.pig.data.Tuple</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../datafu/pig/stats/entropy/EmpiricalCountEntropy.html#combine-org.apache.pig.data.DataBag-">combine</a></span>(org.apache.pig.data.DataBag&nbsp;values)</code>&nbsp;</td>
+</tr>
+<tr id="i3" class="rowColor">
+<td class="colFirst"><code>java.lang.String</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../datafu/pig/stats/entropy/EmpiricalCountEntropy.html#getFinal--">getFinal</a></span>()</code>&nbsp;</td>
+</tr>
+<tr id="i4" class="altColor">
+<td class="colFirst"><code>java.lang.String</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../datafu/pig/stats/entropy/EmpiricalCountEntropy.html#getInitial--">getInitial</a></span>()</code>&nbsp;</td>
+</tr>
+<tr id="i5" class="rowColor">
+<td class="colFirst"><code>java.lang.String</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../datafu/pig/stats/entropy/EmpiricalCountEntropy.html#getIntermed--">getIntermed</a></span>()</code>&nbsp;</td>
+</tr>
+<tr id="i6" class="altColor">
+<td class="colFirst"><code>java.lang.Double</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../datafu/pig/stats/entropy/EmpiricalCountEntropy.html#getValue--">getValue</a></span>()</code>&nbsp;</td>
+</tr>
+<tr id="i7" class="rowColor">
+<td class="colFirst"><code>org.apache.pig.impl.logicalLayer.schema.Schema</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../datafu/pig/stats/entropy/EmpiricalCountEntropy.html#outputSchema-org.apache.pig.impl.logicalLayer.schema.Schema-">outputSchema</a></span>(org.apache.pig.impl.logicalLayer.schema.Schema&nbsp;input)</code>&nbsp;</td>
+</tr>
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+<ul class="blockList">
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+<!--   -->
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+<h3>Methods inherited from class&nbsp;org.apache.pig.AccumulatorEvalFunc</h3>
+<code>exec</code></li>
+</ul>
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+<li class="blockList"><a name="methods.inherited.from.class.org.apache.pig.EvalFunc">
+<!--   -->
+</a>
+<h3>Methods inherited from class&nbsp;org.apache.pig.EvalFunc</h3>
+<code>allowCompileTimeCalculation, finish, getArgToFuncMapping, getCacheFiles, getInputSchema, getLogger, getPigLogger, getReporter, getReturnType, getSchemaName, getSchemaType, getShipFiles, isAsynchronous, progress, setInputSchema, setPigLogger, setReporter, setUDFContextSignature, warn</code></li>
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+<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
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+<!--   -->
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+<a name="EmpiricalCountEntropy--">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>EmpiricalCountEntropy</h4>
+<pre>public&nbsp;EmpiricalCountEntropy()
+                      throws org.apache.pig.backend.executionengine.ExecException</pre>
+<dl>
+<dt><span class="throwsLabel">Throws:</span></dt>
+<dd><code>org.apache.pig.backend.executionengine.ExecException</code></dd>
+</dl>
+</li>
+</ul>
+<a name="EmpiricalCountEntropy-java.lang.String-">
+<!--   -->
+</a>
+<ul class="blockListLast">
+<li class="blockList">
+<h4>EmpiricalCountEntropy</h4>
+<pre>public&nbsp;EmpiricalCountEntropy(java.lang.String&nbsp;base)
+                      throws org.apache.pig.backend.executionengine.ExecException</pre>
+<dl>
+<dt><span class="throwsLabel">Throws:</span></dt>
+<dd><code>org.apache.pig.backend.executionengine.ExecException</code></dd>
+</dl>
+</li>
+</ul>
+</li>
+</ul>
+<!-- ============ METHOD DETAIL ========== -->
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+<li class="blockList">
+<h4>getFinal</h4>
+<pre>public&nbsp;java.lang.String&nbsp;getFinal()</pre>
+<dl>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code>getFinal</code>&nbsp;in interface&nbsp;<code>org.apache.pig.Algebraic</code></dd>
+</dl>
+</li>
+</ul>
+<a name="getInitial--">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>getInitial</h4>
+<pre>public&nbsp;java.lang.String&nbsp;getInitial()</pre>
+<dl>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code>getInitial</code>&nbsp;in interface&nbsp;<code>org.apache.pig.Algebraic</code></dd>
+</dl>
+</li>
+</ul>
+<a name="getIntermed--">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>getIntermed</h4>
+<pre>public&nbsp;java.lang.String&nbsp;getIntermed()</pre>
+<dl>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code>getIntermed</code>&nbsp;in interface&nbsp;<code>org.apache.pig.Algebraic</code></dd>
+</dl>
+</li>
+</ul>
+<a name="combine-org.apache.pig.data.DataBag-">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>combine</h4>
+<pre>protected static&nbsp;org.apache.pig.data.Tuple&nbsp;combine(org.apache.pig.data.DataBag&nbsp;values)
+                                            throws org.apache.pig.backend.executionengine.ExecException</pre>
+<dl>
+<dt><span class="throwsLabel">Throws:</span></dt>
+<dd><code>org.apache.pig.backend.executionengine.ExecException</code></dd>
+</dl>
+</li>
+</ul>
+<a name="accumulate-org.apache.pig.data.Tuple-">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>accumulate</h4>
+<pre>public&nbsp;void&nbsp;accumulate(org.apache.pig.data.Tuple&nbsp;input)
+                throws java.io.IOException</pre>
+<dl>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code>accumulate</code>&nbsp;in interface&nbsp;<code>org.apache.pig.Accumulator&lt;java.lang.Double&gt;</code></dd>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code>accumulate</code>&nbsp;in class&nbsp;<code>org.apache.pig.AccumulatorEvalFunc&lt;java.lang.Double&gt;</code></dd>
+<dt><span class="throwsLabel">Throws:</span></dt>
+<dd><code>java.io.IOException</code></dd>
+</dl>
+</li>
+</ul>
+<a name="getValue--">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>getValue</h4>
+<pre>public&nbsp;java.lang.Double&nbsp;getValue()</pre>
+<dl>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code>getValue</code>&nbsp;in interface&nbsp;<code>org.apache.pig.Accumulator&lt;java.lang.Double&gt;</code></dd>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code>getValue</code>&nbsp;in class&nbsp;<code>org.apache.pig.AccumulatorEvalFunc&lt;java.lang.Double&gt;</code></dd>
+</dl>
+</li>
+</ul>
+<a name="cleanup--">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>cleanup</h4>
+<pre>public&nbsp;void&nbsp;cleanup()</pre>
+<dl>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code>cleanup</code>&nbsp;in interface&nbsp;<code>org.apache.pig.Accumulator&lt;java.lang.Double&gt;</code></dd>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code>cleanup</code>&nbsp;in class&nbsp;<code>org.apache.pig.AccumulatorEvalFunc&lt;java.lang.Double&gt;</code></dd>
+</dl>
+</li>
+</ul>
+<a name="outputSchema-org.apache.pig.impl.logicalLayer.schema.Schema-">
+<!--   -->
+</a>
+<ul class="blockListLast">
+<li class="blockList">
+<h4>outputSchema</h4>
+<pre>public&nbsp;org.apache.pig.impl.logicalLayer.schema.Schema&nbsp;outputSchema(org.apache.pig.impl.logicalLayer.schema.Schema&nbsp;input)</pre>
+<dl>
+<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
+<dd><code>outputSchema</code>&nbsp;in class&nbsp;<code>org.apache.pig.EvalFunc&lt;java.lang.Double&gt;</code></dd>
+</dl>
+</li>
+</ul>
+</li>
+</ul>
+</li>
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