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| <h2 title="Class ArrayOfDoublesSketch" class="title">Class ArrayOfDoublesSketch</h2> |
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| <ul class="inheritance"> |
| <li><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li> |
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| <ul class="inheritance"> |
| <li>org.apache.datasketches.tuple.arrayofdoubles.ArrayOfDoublesSketch</li> |
| </ul> |
| </li> |
| </ul> |
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| <dl> |
| <dt>Direct Known Subclasses:</dt> |
| <dd><code><a href="../../../../../org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesCompactSketch.html" title="class in org.apache.datasketches.tuple.arrayofdoubles">ArrayOfDoublesCompactSketch</a></code>, <code><a href="../../../../../org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesUpdatableSketch.html" title="class in org.apache.datasketches.tuple.arrayofdoubles">ArrayOfDoublesUpdatableSketch</a></code></dd> |
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| <pre>public abstract class <span class="typeNameLabel">ArrayOfDoublesSketch</span> |
| extends <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre> |
| <div class="block">The base class for the tuple sketch of type ArrayOfDoubles, where an array of double values |
| is associated with each key. |
| A primitive array of doubles is used here, as opposed to a generic Summary object, |
| for improved performance.</div> |
| </li> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></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="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract 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> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Method</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>double</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../../org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesSketch.html#getEstimate--">getEstimate</a></span>​()</code></th> |
| <td class="colLast"> |
| <div class="block">Estimates the cardinality of the set (number of unique values presented to the sketch)</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>double</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../../org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesSketch.html#getLowerBound-int-">getLowerBound</a></span>​(int numStdDev)</code></th> |
| <td class="colLast"> |
| <div class="block">Gets the approximate lower error bound given the specified number of Standard Deviations.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../../org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesSketch.html#getNumValues--">getNumValues</a></span>​()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>abstract int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../../org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesSketch.html#getRetainedEntries--">getRetainedEntries</a></span>​()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>double</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../../org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesSketch.html#getTheta--">getTheta</a></span>​()</code></th> |
| <td class="colLast"> |
| <div class="block">Gets the value of theta as a double between zero and one</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>double</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../../org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesSketch.html#getUpperBound-int-">getUpperBound</a></span>​(int numStdDev)</code></th> |
| <td class="colLast"> |
| <div class="block">Gets the approximate upper error bound given the specified number of Standard Deviations.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>abstract double[][]</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../../org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesSketch.html#getValues--">getValues</a></span>​()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesSketch.html" title="class in org.apache.datasketches.tuple.arrayofdoubles">ArrayOfDoublesSketch</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../../org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesSketch.html#heapify-org.apache.datasketches.memory.Memory-">heapify</a></span>​(org.apache.datasketches.memory.Memory mem)</code></th> |
| <td class="colLast"> |
| <div class="block">Heapify the given Memory as an ArrayOfDoublesSketch</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesSketch.html" title="class in org.apache.datasketches.tuple.arrayofdoubles">ArrayOfDoublesSketch</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../../org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesSketch.html#heapify-org.apache.datasketches.memory.Memory-long-">heapify</a></span>​(org.apache.datasketches.memory.Memory mem, |
| long seed)</code></th> |
| <td class="colLast"> |
| <div class="block">Heapify the given Memory and seed as a ArrayOfDoublesSketch</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../../org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesSketch.html#isEmpty--">isEmpty</a></span>​()</code></th> |
| <td class="colLast"> |
| <div class="block"><a href="../../../../../resources/dictionary.html#empty">See Empty</a></div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../../org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesSketch.html#isEstimationMode--">isEstimationMode</a></span>​()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns true if the sketch is Estimation Mode (as opposed to Exact Mode).</div> |
| </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>abstract <a href="../../../../../org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesSketchIterator.html" title="interface in org.apache.datasketches.tuple.arrayofdoubles">ArrayOfDoublesSketchIterator</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../../org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesSketch.html#iterator--">iterator</a></span>​()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code>abstract byte[]</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../../org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesSketch.html#toByteArray--">toByteArray</a></span>​()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../../org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesSketch.html#toString--">toString</a></span>​()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesSketch.html" title="class in org.apache.datasketches.tuple.arrayofdoubles">ArrayOfDoublesSketch</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../../org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesSketch.html#wrap-org.apache.datasketches.memory.Memory-">wrap</a></span>​(org.apache.datasketches.memory.Memory mem)</code></th> |
| <td class="colLast"> |
| <div class="block">Wrap the given Memory as an ArrayOfDoublesSketch</div> |
| </td> |
| </tr> |
| <tr id="i15" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesSketch.html" title="class in org.apache.datasketches.tuple.arrayofdoubles">ArrayOfDoublesSketch</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../../org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesSketch.html#wrap-org.apache.datasketches.memory.Memory-long-">wrap</a></span>​(org.apache.datasketches.memory.Memory mem, |
| long seed)</code></th> |
| <td class="colLast"> |
| <div class="block">Wrap the given Memory and seed as a ArrayOfDoublesSketch</div> |
| </td> |
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| <h3>Methods inherited from class java.lang.<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3> |
| <code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li> |
| </ul> |
| </li> |
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| </li> |
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| <!-- ============ METHOD DETAIL ========== --> |
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| <h3>Method Detail</h3> |
| <a name="heapify-org.apache.datasketches.memory.Memory-"> |
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| <h4>heapify</h4> |
| <pre>public static <a href="../../../../../org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesSketch.html" title="class in org.apache.datasketches.tuple.arrayofdoubles">ArrayOfDoublesSketch</a> heapify​(org.apache.datasketches.memory.Memory mem)</pre> |
| <div class="block">Heapify the given Memory as an ArrayOfDoublesSketch</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>mem</code> - the given Memory</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>an ArrayOfDoublesSketch</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="heapify-org.apache.datasketches.memory.Memory-long-"> |
| <!-- --> |
| </a> |
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| <h4>heapify</h4> |
| <pre>public static <a href="../../../../../org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesSketch.html" title="class in org.apache.datasketches.tuple.arrayofdoubles">ArrayOfDoublesSketch</a> heapify​(org.apache.datasketches.memory.Memory mem, |
| long seed)</pre> |
| <div class="block">Heapify the given Memory and seed as a ArrayOfDoublesSketch</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>mem</code> - the given Memory</dd> |
| <dd><code>seed</code> - the given seed</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>an ArrayOfDoublesSketch</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="wrap-org.apache.datasketches.memory.Memory-"> |
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| </a> |
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| <h4>wrap</h4> |
| <pre>public static <a href="../../../../../org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesSketch.html" title="class in org.apache.datasketches.tuple.arrayofdoubles">ArrayOfDoublesSketch</a> wrap​(org.apache.datasketches.memory.Memory mem)</pre> |
| <div class="block">Wrap the given Memory as an ArrayOfDoublesSketch</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>mem</code> - the given Memory</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>an ArrayOfDoublesSketch</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="wrap-org.apache.datasketches.memory.Memory-long-"> |
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| <h4>wrap</h4> |
| <pre>public static <a href="../../../../../org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesSketch.html" title="class in org.apache.datasketches.tuple.arrayofdoubles">ArrayOfDoublesSketch</a> wrap​(org.apache.datasketches.memory.Memory mem, |
| long seed)</pre> |
| <div class="block">Wrap the given Memory and seed as a ArrayOfDoublesSketch</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>mem</code> - the given Memory</dd> |
| <dd><code>seed</code> - the given seed</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>an ArrayOfDoublesSketch</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>getEstimate</h4> |
| <pre>public double getEstimate​()</pre> |
| <div class="block">Estimates the cardinality of the set (number of unique values presented to the sketch)</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>best estimate of the number of unique values</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>getUpperBound</h4> |
| <pre>public double getUpperBound​(int numStdDev)</pre> |
| <div class="block">Gets the approximate upper error bound given the specified number of Standard Deviations. |
| This will return getEstimate() if isEmpty() is true.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>numStdDev</code> - <a href="../../../../../resources/dictionary.html#numStdDev">See Number of Standard Deviations</a></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the upper bound.</dd> |
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| <pre>public double getLowerBound​(int numStdDev)</pre> |
| <div class="block">Gets the approximate lower error bound given the specified number of Standard Deviations. |
| This will return getEstimate() if isEmpty() is true.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>numStdDev</code> - <a href="../../../../../resources/dictionary.html#numStdDev">See Number of Standard Deviations</a></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
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| <pre>public boolean isEmpty​()</pre> |
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| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if empty.</dd> |
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| <h4>getNumValues</h4> |
| <pre>public int getNumValues​()</pre> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>number of double values associated with each key</dd> |
| </dl> |
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| <h4>isEstimationMode</h4> |
| <pre>public boolean isEstimationMode​()</pre> |
| <div class="block">Returns true if the sketch is Estimation Mode (as opposed to Exact Mode). |
| This is true if theta < 1.0 AND isEmpty() is false.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if the sketch is in estimation mode.</dd> |
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| <h4>getTheta</h4> |
| <pre>public double getTheta​()</pre> |
| <div class="block">Gets the value of theta as a double between zero and one</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the value of theta as a double</dd> |
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| <dd>number of retained entries</dd> |
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| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>serialized representation of the sketch</dd> |
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| <h4>getValues</h4> |
| <pre>public abstract double[][] getValues​()</pre> |
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| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>array of arrays of double values in the sketch</dd> |
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| <pre>public abstract <a href="../../../../../org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesSketchIterator.html" title="interface in org.apache.datasketches.tuple.arrayofdoubles">ArrayOfDoublesSketchIterator</a> iterator​()</pre> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>iterator over the sketch</dd> |
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