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| <h2 title="Class VectorBinaryAssign" class="title">Class VectorBinaryAssign</h2> |
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| <dd><a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignAllIterateSequentialInplaceUpdates.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignAllIterateSequentialInplaceUpdates</a>, <a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignAllIterateSequentialMergeUpdates.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignAllIterateSequentialMergeUpdates</a>, <a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignAllIterateThatLookupThisInplaceUpdates.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignAllIterateThatLookupThisInplaceUpdates</a>, <a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignAllIterateThatLookupThisMergeUpdates.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignAllIterateThatLookupThisMergeUpdates</a>, <a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignAllIterateThisLookupThatInplaceUpdates.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignAllIterateThisLookupThatInplaceUpdates</a>, <a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignAllIterateThisLookupThatMergeUpdates.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignAllIterateThisLookupThatMergeUpdates</a>, <a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignAllLoopInplaceUpdates.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignAllLoopInplaceUpdates</a>, <a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignAllLoopMergeUpdates.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignAllLoopMergeUpdates</a>, <a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignIterateIntersection.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignIterateIntersection</a>, <a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignIterateUnionRandomInplaceUpdates.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignIterateUnionRandomInplaceUpdates</a>, <a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignIterateUnionRandomMergeUpdates.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignIterateUnionRandomMergeUpdates</a>, <a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignIterateUnionSequentialInplaceUpdates.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignIterateUnionSequentialInplaceUpdates</a>, <a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignIterateUnionSequentialMergeUpdates.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignIterateUnionSequentialMergeUpdates</a>, <a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignNonzerosIterateThatLookupThisInplaceUpdates.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignNonzerosIterateThatLookupThisInplaceUpdates</a>, <a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignNonzerosIterateThatLookupThisMergeUpdates.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignNonzerosIterateThatLookupThisMergeUpdates</a>, <a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignNonzerosIterateThisLookupThat.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignNonzerosIterateThisLookupThat</a></dd> |
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| <pre>public abstract class <span class="typeNameLabel">VectorBinaryAssign</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">Abstract class encapsulating different algorithms that perform the Vector operations assign(). |
| x.assign(y, f), for x and y Vectors and f a DoubleDouble function: |
| - applies the function f to every element in x and y, f(xi, yi) |
| - assigns xi = f(xi, yi) for all indices i |
| |
| The names of variables, methods and classes used here follow the following conventions: |
| The vector being assigned to (the left hand side) is called this or x. |
| The right hand side is called that or y. |
| The function to be applied is called f. |
| |
| The different algorithms take into account the different characteristics of vector classes: |
| - whether the vectors support sequential iteration (isSequential()) |
| - whether the vectors support constant-time additions (isAddConstantTime()) |
| - what the lookup cost is (getLookupCost()) |
| - what the iterator advancement cost is (getIteratorAdvanceCost()) |
| |
| The names of the actual classes (they're nested in VectorBinaryAssign) describe the used for assignment. |
| The most important optimization is iterating just through the nonzeros (only possible if f(0, 0) = 0). |
| There are 4 main possibilities: |
| - iterating through the nonzeros of just one vector and looking up the corresponding elements in the other |
| - iterating through the intersection of nonzeros (those indices where both vectors have nonzero values) |
| - iterating through the union of nonzeros (those indices where at least one of the vectors has a nonzero value) |
| - iterating through all the elements in some way (either through both at the same time, both one after the other, |
| looking up both, looking up just one). |
| Then, there are two additional sub-possibilities: |
| - if a new value can be added to x in constant time (isAddConstantTime()), the *Inplace updates are used |
| - otherwise (really just for SequentialAccessSparseVectors right now), the *Merge updates are used, where |
| a sorted list of (index, value) pairs is merged into the vector at the end. |
| |
| The internal details are not important and a particular algorithm should generally not be called explicitly. |
| The best one will be selected through assignBest(), which is itself called through Vector.assign(). |
| |
| See https://docs.google.com/document/d/1g1PjUuvjyh2LBdq2_rKLIcUiDbeOORA1sCJiSsz-JVU/edit# for a more detailed |
| explanation.</div> |
| </li> |
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| <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 </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignAllIterateSequentialInplaceUpdates.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignAllIterateSequentialInplaceUpdates</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignAllIterateSequentialMergeUpdates.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignAllIterateSequentialMergeUpdates</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignAllIterateThatLookupThisInplaceUpdates.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignAllIterateThatLookupThisInplaceUpdates</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignAllIterateThatLookupThisMergeUpdates.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignAllIterateThatLookupThisMergeUpdates</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignAllIterateThisLookupThatInplaceUpdates.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignAllIterateThisLookupThatInplaceUpdates</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignAllIterateThisLookupThatMergeUpdates.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignAllIterateThisLookupThatMergeUpdates</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignAllLoopInplaceUpdates.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignAllLoopInplaceUpdates</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignAllLoopMergeUpdates.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignAllLoopMergeUpdates</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignIterateIntersection.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignIterateIntersection</a></span></code> |
| <div class="block">If f(x, 0) = x and f(0, y) = 0 the zeros in x and y don't matter and we can iterate through the nonzeros |
| in both x and y.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignIterateUnionRandomInplaceUpdates.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignIterateUnionRandomInplaceUpdates</a></span></code> |
| <div class="block">If f(0, 0) = 0 we can iterate through the nonzeros in either x or y.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignIterateUnionRandomMergeUpdates.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignIterateUnionRandomMergeUpdates</a></span></code> |
| <div class="block">If f(0, 0) = 0 we can iterate through the nonzeros in either x or y.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignIterateUnionSequentialInplaceUpdates.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignIterateUnionSequentialInplaceUpdates</a></span></code> |
| <div class="block">If f(0, 0) = 0 we can iterate through the nonzeros in either x or y.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignIterateUnionSequentialMergeUpdates.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignIterateUnionSequentialMergeUpdates</a></span></code> |
| <div class="block">If f(0, 0) = 0 we can iterate through the nonzeros in either x or y.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignNonzerosIterateThatLookupThisInplaceUpdates.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignNonzerosIterateThatLookupThisInplaceUpdates</a></span></code> |
| <div class="block">If f(x, 0) = x, the zeros in y don't matter and we can simply iterate through the nonzeros of y.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignNonzerosIterateThatLookupThisMergeUpdates.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignNonzerosIterateThatLookupThisMergeUpdates</a></span></code> |
| <div class="block">If f(x, 0) = x, the zeros in y don't matter and we can simply iterate through the nonzeros of y.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/math/VectorBinaryAssign.AssignNonzerosIterateThisLookupThat.html" title="class in org.apache.mahout.math">VectorBinaryAssign.AssignNonzerosIterateThisLookupThat</a></span></code> |
| <div class="block">If f(0, y) = 0, the zeros in x don't matter and we can simply iterate through the nonzeros of x.</div> |
| </td> |
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| <td class="colFirst"><code>static <a href="../../../../org/apache/mahout/math/VectorBinaryAssign.html" title="class in org.apache.mahout.math">VectorBinaryAssign</a>[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/math/VectorBinaryAssign.html#OPERATIONS">OPERATIONS</a></span></code> </td> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/math/VectorBinaryAssign.html#VectorBinaryAssign--">VectorBinaryAssign</a></span>()</code> </td> |
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| <td class="colFirst"><code>abstract <a href="../../../../org/apache/mahout/math/Vector.html" title="interface in org.apache.mahout.math">Vector</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/math/VectorBinaryAssign.html#assign-org.apache.mahout.math.Vector-org.apache.mahout.math.Vector-org.apache.mahout.math.function.DoubleDoubleFunction-">assign</a></span>(<a href="../../../../org/apache/mahout/math/Vector.html" title="interface in org.apache.mahout.math">Vector</a> x, |
| <a href="../../../../org/apache/mahout/math/Vector.html" title="interface in org.apache.mahout.math">Vector</a> y, |
| <a href="../../../../org/apache/mahout/math/function/DoubleDoubleFunction.html" title="class in org.apache.mahout.math.function">DoubleDoubleFunction</a> f)</code> |
| <div class="block">Main method that applies f to x and y component-wise assigning the results to x.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../org/apache/mahout/math/Vector.html" title="interface in org.apache.mahout.math">Vector</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/math/VectorBinaryAssign.html#assignBest-org.apache.mahout.math.Vector-org.apache.mahout.math.Vector-org.apache.mahout.math.function.DoubleDoubleFunction-">assignBest</a></span>(<a href="../../../../org/apache/mahout/math/Vector.html" title="interface in org.apache.mahout.math">Vector</a> x, |
| <a href="../../../../org/apache/mahout/math/Vector.html" title="interface in org.apache.mahout.math">Vector</a> y, |
| <a href="../../../../org/apache/mahout/math/function/DoubleDoubleFunction.html" title="class in org.apache.mahout.math.function">DoubleDoubleFunction</a> f)</code> |
| <div class="block">This is the method that should be used when assigning.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>abstract double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/math/VectorBinaryAssign.html#estimateCost-org.apache.mahout.math.Vector-org.apache.mahout.math.Vector-org.apache.mahout.math.function.DoubleDoubleFunction-">estimateCost</a></span>(<a href="../../../../org/apache/mahout/math/Vector.html" title="interface in org.apache.mahout.math">Vector</a> x, |
| <a href="../../../../org/apache/mahout/math/Vector.html" title="interface in org.apache.mahout.math">Vector</a> y, |
| <a href="../../../../org/apache/mahout/math/function/DoubleDoubleFunction.html" title="class in org.apache.mahout.math.function">DoubleDoubleFunction</a> f)</code> |
| <div class="block">Estimates the cost of using this algorithm to compute the assignment.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../org/apache/mahout/math/VectorBinaryAssign.html" title="class in org.apache.mahout.math">VectorBinaryAssign</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/math/VectorBinaryAssign.html#getBestOperation-org.apache.mahout.math.Vector-org.apache.mahout.math.Vector-org.apache.mahout.math.function.DoubleDoubleFunction-">getBestOperation</a></span>(<a href="../../../../org/apache/mahout/math/Vector.html" title="interface in org.apache.mahout.math">Vector</a> x, |
| <a href="../../../../org/apache/mahout/math/Vector.html" title="interface in org.apache.mahout.math">Vector</a> y, |
| <a href="../../../../org/apache/mahout/math/function/DoubleDoubleFunction.html" title="class in org.apache.mahout.math.function">DoubleDoubleFunction</a> f)</code> |
| <div class="block">The best operation is the least expensive valid one.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>abstract boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/math/VectorBinaryAssign.html#isValid-org.apache.mahout.math.Vector-org.apache.mahout.math.Vector-org.apache.mahout.math.function.DoubleDoubleFunction-">isValid</a></span>(<a href="../../../../org/apache/mahout/math/Vector.html" title="interface in org.apache.mahout.math">Vector</a> x, |
| <a href="../../../../org/apache/mahout/math/Vector.html" title="interface in org.apache.mahout.math">Vector</a> y, |
| <a href="../../../../org/apache/mahout/math/function/DoubleDoubleFunction.html" title="class in org.apache.mahout.math.function">DoubleDoubleFunction</a> f)</code> |
| <div class="block">Returns true iff we can use this algorithm to apply f to x and y component-wise and assign the result to x.</div> |
| </td> |
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| </table> |
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| <h3>Methods inherited from class java.lang.<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></h3> |
| <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> |
| </ul> |
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| <h3>Field Detail</h3> |
| <a name="OPERATIONS"> |
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| <h4>OPERATIONS</h4> |
| <pre>public static final <a href="../../../../org/apache/mahout/math/VectorBinaryAssign.html" title="class in org.apache.mahout.math">VectorBinaryAssign</a>[] OPERATIONS</pre> |
| </li> |
| </ul> |
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| <h3>Constructor Detail</h3> |
| <a name="VectorBinaryAssign--"> |
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| <h4>VectorBinaryAssign</h4> |
| <pre>public VectorBinaryAssign()</pre> |
| </li> |
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| <h3>Method Detail</h3> |
| <a name="isValid-org.apache.mahout.math.Vector-org.apache.mahout.math.Vector-org.apache.mahout.math.function.DoubleDoubleFunction-"> |
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| <h4>isValid</h4> |
| <pre>public abstract boolean isValid(<a href="../../../../org/apache/mahout/math/Vector.html" title="interface in org.apache.mahout.math">Vector</a> x, |
| <a href="../../../../org/apache/mahout/math/Vector.html" title="interface in org.apache.mahout.math">Vector</a> y, |
| <a href="../../../../org/apache/mahout/math/function/DoubleDoubleFunction.html" title="class in org.apache.mahout.math.function">DoubleDoubleFunction</a> f)</pre> |
| <div class="block">Returns true iff we can use this algorithm to apply f to x and y component-wise and assign the result to x.</div> |
| </li> |
| </ul> |
| <a name="estimateCost-org.apache.mahout.math.Vector-org.apache.mahout.math.Vector-org.apache.mahout.math.function.DoubleDoubleFunction-"> |
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| </a> |
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| <h4>estimateCost</h4> |
| <pre>public abstract double estimateCost(<a href="../../../../org/apache/mahout/math/Vector.html" title="interface in org.apache.mahout.math">Vector</a> x, |
| <a href="../../../../org/apache/mahout/math/Vector.html" title="interface in org.apache.mahout.math">Vector</a> y, |
| <a href="../../../../org/apache/mahout/math/function/DoubleDoubleFunction.html" title="class in org.apache.mahout.math.function">DoubleDoubleFunction</a> f)</pre> |
| <div class="block">Estimates the cost of using this algorithm to compute the assignment. The algorithm is assumed to be valid.</div> |
| </li> |
| </ul> |
| <a name="assign-org.apache.mahout.math.Vector-org.apache.mahout.math.Vector-org.apache.mahout.math.function.DoubleDoubleFunction-"> |
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| <h4>assign</h4> |
| <pre>public abstract <a href="../../../../org/apache/mahout/math/Vector.html" title="interface in org.apache.mahout.math">Vector</a> assign(<a href="../../../../org/apache/mahout/math/Vector.html" title="interface in org.apache.mahout.math">Vector</a> x, |
| <a href="../../../../org/apache/mahout/math/Vector.html" title="interface in org.apache.mahout.math">Vector</a> y, |
| <a href="../../../../org/apache/mahout/math/function/DoubleDoubleFunction.html" title="class in org.apache.mahout.math.function">DoubleDoubleFunction</a> f)</pre> |
| <div class="block">Main method that applies f to x and y component-wise assigning the results to x. It returns the modified vector, |
| x.</div> |
| </li> |
| </ul> |
| <a name="getBestOperation-org.apache.mahout.math.Vector-org.apache.mahout.math.Vector-org.apache.mahout.math.function.DoubleDoubleFunction-"> |
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| <h4>getBestOperation</h4> |
| <pre>public static <a href="../../../../org/apache/mahout/math/VectorBinaryAssign.html" title="class in org.apache.mahout.math">VectorBinaryAssign</a> getBestOperation(<a href="../../../../org/apache/mahout/math/Vector.html" title="interface in org.apache.mahout.math">Vector</a> x, |
| <a href="../../../../org/apache/mahout/math/Vector.html" title="interface in org.apache.mahout.math">Vector</a> y, |
| <a href="../../../../org/apache/mahout/math/function/DoubleDoubleFunction.html" title="class in org.apache.mahout.math.function">DoubleDoubleFunction</a> f)</pre> |
| <div class="block">The best operation is the least expensive valid one.</div> |
| </li> |
| </ul> |
| <a name="assignBest-org.apache.mahout.math.Vector-org.apache.mahout.math.Vector-org.apache.mahout.math.function.DoubleDoubleFunction-"> |
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| <h4>assignBest</h4> |
| <pre>public static <a href="../../../../org/apache/mahout/math/Vector.html" title="interface in org.apache.mahout.math">Vector</a> assignBest(<a href="../../../../org/apache/mahout/math/Vector.html" title="interface in org.apache.mahout.math">Vector</a> x, |
| <a href="../../../../org/apache/mahout/math/Vector.html" title="interface in org.apache.mahout.math">Vector</a> y, |
| <a href="../../../../org/apache/mahout/math/function/DoubleDoubleFunction.html" title="class in org.apache.mahout.math.function">DoubleDoubleFunction</a> f)</pre> |
| <div class="block">This is the method that should be used when assigning. It selects the best algorithm and applies it. |
| Note that it does NOT invalidate the cached length of the Vector and should only be used through the wrapprs |
| in AbstractVector.</div> |
| </li> |
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