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<div class="subTitle">org.apache.ignite.ml.dataset.feature.extractor</div>
<h2 title="Class Vectorizer" class="title">Class Vectorizer<span class='angle_bracket'>&lt;</span>K,V,C extends <a href="https://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a>,L<span class='angle_bracket'>&gt;</span></h2>
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<ul class="inheritance">
<li>org.apache.ignite.ml.dataset.feature.extractor.Vectorizer<span class='angle_bracket'>&lt;</span>K,V,C,L<span class='angle_bracket'>&gt;</span></li>
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<dt><span class="paramLabel">Type Parameters:</span></dt>
<dd><code>K</code> - Type of keys in upstream.</dd>
<dd><code>V</code> - Type of values in upstream.</dd>
<dd><code>C</code> - Type of "coordinate" - index of feature value in upstream object.</dd>
<dd><code>L</code> - Type of label for resulting vectors.</dd>
</dl>
<dl>
<dt>All Implemented Interfaces:</dt>
<dd><a href="https://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/util/function/BiFunction.html?is-external=true" title="class or interface in java.util.function">BiFunction</a><span class='angle_bracket'>&lt;</span>K,V,<a href="../../../../../../../org/apache/ignite/ml/structures/LabeledVector.html" title="class in org.apache.ignite.ml.structures">LabeledVector</a><span class='angle_bracket'>&gt;</span>, <a href="../../../../../../../org/apache/ignite/ml/math/functions/IgniteBiFunction.html" title="interface in org.apache.ignite.ml.math.functions">IgniteBiFunction</a><span class='angle_bracket'>&lt;</span>K,V,<a href="../../../../../../../org/apache/ignite/ml/structures/LabeledVector.html" title="class in org.apache.ignite.ml.structures">LabeledVector</a><span class='angle_bracket'>&gt;</span>, <a href="../../../../../../../org/apache/ignite/ml/preprocessing/Preprocessor.html" title="interface in org.apache.ignite.ml.preprocessing">Preprocessor</a><span class='angle_bracket'>&lt;</span>K,V<span class='angle_bracket'>&gt;</span>, <a href="../../../../../../../org/apache/ignite/ml/trainers/FeatureLabelExtractor.html" title="interface in org.apache.ignite.ml.trainers">FeatureLabelExtractor</a><span class='angle_bracket'>&lt;</span>K,V,L<span class='angle_bracket'>&gt;</span></dd>
</dl>
<dl>
<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/ExtractionUtils.DefaultLabelVectorizer.html" title="class in org.apache.ignite.ml.dataset.feature.extractor">ExtractionUtils.DefaultLabelVectorizer</a>, <a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/ExtractionUtils.ObjectLabelVectorizer.html" title="class in org.apache.ignite.ml.dataset.feature.extractor">ExtractionUtils.ObjectLabelVectorizer</a>, <a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/impl/LabeledDummyVectorizer.html" title="class in org.apache.ignite.ml.dataset.feature.extractor.impl">LabeledDummyVectorizer</a>, <a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.VectorizerAdapter.html" title="class in org.apache.ignite.ml.dataset.feature.extractor">Vectorizer.VectorizerAdapter</a></dd>
</dl>
<hr>
<br>
<pre>public abstract class <span class="typeNameLabel">Vectorizer<span class='angle_bracket'>&lt;</span>K,V,C extends <a href="https://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a>,L<span class='angle_bracket'>&gt;</span></span>
extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>
implements <a href="../../../../../../../org/apache/ignite/ml/trainers/FeatureLabelExtractor.html" title="interface in org.apache.ignite.ml.trainers">FeatureLabelExtractor</a><span class='angle_bracket'>&lt;</span>K,V,L<span class='angle_bracket'>&gt;</span></pre>
<div class="block">Class for extracting labeled vectors from upstream. This is an abstract class providing API for extracting feature
and label values by "coordinates" of them from upstream objects. For example <a href="../../../../../../../org/apache/ignite/binary/BinaryObject.html" title="interface in org.apache.ignite.binary"><code>BinaryObject</code></a> can be upstream
object and coordinates for them are names of fields with double-values.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../../../serialized-form.html#org.apache.ignite.ml.dataset.feature.extractor.Vectorizer">Serialized Form</a></dd>
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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="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.LabelCoordinate.html" title="enum in org.apache.ignite.ml.dataset.feature.extractor">Vectorizer.LabelCoordinate</a></span></code>
<div class="block">Shotrcuts for coordinates in feature vector.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.VectorizerAdapter.html" title="class in org.apache.ignite.ml.dataset.feature.extractor">Vectorizer.VectorizerAdapter</a><span class='angle_bracket'>&lt;</span><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.VectorizerAdapter.html" title="type parameter in Vectorizer.VectorizerAdapter">K</a>,<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.VectorizerAdapter.html" title="type parameter in Vectorizer.VectorizerAdapter">V</a>,<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.VectorizerAdapter.html" title="type parameter in Vectorizer.VectorizerAdapter">C</a> extends <a href="https://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a>,<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.VectorizerAdapter.html" title="type parameter in Vectorizer.VectorizerAdapter">L</a><span class='angle_bracket'>&gt;</span></span></code>
<div class="block">Utility class for convenient overridings.</div>
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<h3>Constructor Summary</h3>
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<th class="colOne" scope="col">Constructor and Description</th>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html#Vectorizer-C...-">Vectorizer</a></span>(<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">C</a>...&nbsp;coords)</code>
<div class="block">Creates an instance of Vectorizer.</div>
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<h3>Method Summary</h3>
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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="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract 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>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<tr id="i0" class="altColor">
<td class="colFirst"><code>protected abstract <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><span class='angle_bracket'>&lt;</span><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">C</a><span class='angle_bracket'>&gt;</span></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html#allCoords-K-V-">allCoords</a></span>(<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">K</a>&nbsp;key,
<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">V</a>&nbsp;value)</code>
<div class="block">Returns list of all coordinate with feature values.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code><a href="../../../../../../../org/apache/ignite/ml/structures/LabeledVector.html" title="class in org.apache.ignite.ml.structures">LabeledVector</a><span class='angle_bracket'>&lt;</span><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">L</a><span class='angle_bracket'>&gt;</span></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html#apply-K-V-">apply</a></span>(<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">K</a>&nbsp;key,
<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">V</a>&nbsp;value)</code>
<div class="block">Extracts labeled vector from upstream object.</div>
</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>protected <a href="../../../../../../../org/apache/ignite/ml/math/primitives/vector/Vector.html" title="interface in org.apache.ignite.ml.math.primitives.vector">Vector</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html#createVector-int-">createVector</a></span>(int&nbsp;size)</code>
<div class="block">Create an instance of vector.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="class in org.apache.ignite.ml.dataset.feature.extractor">Vectorizer</a><span class='angle_bracket'>&lt;</span><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">K</a>,<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">V</a>,<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">C</a>,<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">L</a><span class='angle_bracket'>&gt;</span></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html#exclude-C...-">exclude</a></span>(<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">C</a>...&nbsp;coords)</code>
<div class="block">Exclude these coordinates from result vector.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code><a href="../../../../../../../org/apache/ignite/ml/structures/LabeledVector.html" title="class in org.apache.ignite.ml.structures">LabeledVector</a><span class='angle_bracket'>&lt;</span><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">L</a><span class='angle_bracket'>&gt;</span></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html#extract-K-V-">extract</a></span>(<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">K</a>&nbsp;k,
<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">V</a>&nbsp;v)</code>
<div class="block">Extract <a href="../../../../../../../org/apache/ignite/ml/structures/LabeledVector.html" title="class in org.apache.ignite.ml.structures"><code>LabeledVector</code></a> from key and value.</div>
</td>
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<tr id="i5" class="rowColor">
<td class="colFirst"><code>protected abstract <a href="https://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html#feature-C-K-V-">feature</a></span>(<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">C</a>&nbsp;coord,
<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">K</a>&nbsp;key,
<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">V</a>&nbsp;value)</code>
<div class="block">Extracts feature value by given coordinate.</div>
</td>
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<tr id="i6" class="altColor">
<td class="colFirst"><code>protected abstract <a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">L</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html#label-C-K-V-">label</a></span>(<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">C</a>&nbsp;coord,
<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">K</a>&nbsp;key,
<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">V</a>&nbsp;value)</code>
<div class="block">Extract label value by given coordinate.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="class in org.apache.ignite.ml.dataset.feature.extractor">Vectorizer</a><span class='angle_bracket'>&lt;</span><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">K</a>,<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">V</a>,<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">C</a>,<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">L</a><span class='angle_bracket'>&gt;</span></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html#labeled-C-">labeled</a></span>(<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">C</a>&nbsp;labelCoord)</code>
<div class="block">Sets label coordinate for Vectorizer.</div>
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<tr id="i8" class="altColor">
<td class="colFirst"><code><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="class in org.apache.ignite.ml.dataset.feature.extractor">Vectorizer</a><span class='angle_bracket'>&lt;</span><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">K</a>,<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">V</a>,<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">C</a>,<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">L</a><span class='angle_bracket'>&gt;</span></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html#labeled-org.apache.ignite.ml.dataset.feature.extractor.Vectorizer.LabelCoordinate-">labeled</a></span>(<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.LabelCoordinate.html" title="enum in org.apache.ignite.ml.dataset.feature.extractor">Vectorizer.LabelCoordinate</a>&nbsp;labelCoord)</code>
<div class="block">Sets label coordinate for Vectorizer.</div>
</td>
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<tr id="i9" class="rowColor">
<td class="colFirst"><code>protected abstract <a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">L</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html#zero--">zero</a></span>()</code>
<div class="block">Returns default label value for unlabeled data.</div>
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<code><a href="../../../../../../../org/apache/ignite/ml/trainers/FeatureLabelExtractor.html#extractFeatures-K-V-">extractFeatures</a>, <a href="../../../../../../../org/apache/ignite/ml/trainers/FeatureLabelExtractor.html#extractLabel-K-V-">extractLabel</a></code></li>
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<code><a href="../../../../../../../org/apache/ignite/ml/preprocessing/Preprocessor.html#map-org.apache.ignite.ml.math.functions.IgniteFunction-">map</a></code></li>
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<code><a href="../../../../../../../org/apache/ignite/ml/math/functions/IgniteBiFunction.html#andThen-org.apache.ignite.ml.math.functions.IgniteFunction-">andThen</a></code></li>
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<code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/function/BiFunction.html?is-external=true#andThen-java.util.function.Function-" title="class or interface in java.util.function">andThen</a></code></li>
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<h4>Vectorizer</h4>
<pre>public&nbsp;Vectorizer(<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">C</a>...&nbsp;coords)</pre>
<div class="block">Creates an instance of Vectorizer.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>coords</code> - Coordinates for feature extraction. If array is empty then Vectorizer will extract all fields from
upstream object.</dd>
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<h4>apply</h4>
<pre>public&nbsp;<a href="../../../../../../../org/apache/ignite/ml/structures/LabeledVector.html" title="class in org.apache.ignite.ml.structures">LabeledVector</a><span class='angle_bracket'>&lt;</span><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">L</a><span class='angle_bracket'>&gt;</span>&nbsp;apply(<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">K</a>&nbsp;key,
<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">V</a>&nbsp;value)</pre>
<div class="block">Extracts labeled vector from upstream object.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/function/BiFunction.html?is-external=true#apply-T-U-" title="class or interface in java.util.function">apply</a></code>&nbsp;in interface&nbsp;<code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/function/BiFunction.html?is-external=true" title="class or interface in java.util.function">BiFunction</a><span class='angle_bracket'>&lt;</span><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">K</a>,<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">V</a>,<a href="../../../../../../../org/apache/ignite/ml/structures/LabeledVector.html" title="class in org.apache.ignite.ml.structures">LabeledVector</a><span class='angle_bracket'>&gt;</span></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>key</code> - Key.</dd>
<dd><code>value</code> - Value.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>vector.</dd>
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<pre>public&nbsp;<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="class in org.apache.ignite.ml.dataset.feature.extractor">Vectorizer</a><span class='angle_bracket'>&lt;</span><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">K</a>,<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">V</a>,<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">C</a>,<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">L</a><span class='angle_bracket'>&gt;</span>&nbsp;labeled(<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">C</a>&nbsp;labelCoord)</pre>
<div class="block">Sets label coordinate for Vectorizer. By default it equals null and zero() will be used as label value.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>labelCoord</code> - Label coordinate.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>this.</dd>
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<pre>public&nbsp;<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="class in org.apache.ignite.ml.dataset.feature.extractor">Vectorizer</a><span class='angle_bracket'>&lt;</span><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">K</a>,<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">V</a>,<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">C</a>,<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">L</a><span class='angle_bracket'>&gt;</span>&nbsp;labeled(<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.LabelCoordinate.html" title="enum in org.apache.ignite.ml.dataset.feature.extractor">Vectorizer.LabelCoordinate</a>&nbsp;labelCoord)</pre>
<div class="block">Sets label coordinate for Vectorizer. By default it equals null and zero() will be used as label value.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>labelCoord</code> - Label coordinate.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>this.</dd>
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<pre>public&nbsp;<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="class in org.apache.ignite.ml.dataset.feature.extractor">Vectorizer</a><span class='angle_bracket'>&lt;</span><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">K</a>,<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">V</a>,<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">C</a>,<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">L</a><span class='angle_bracket'>&gt;</span>&nbsp;exclude(<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">C</a>...&nbsp;coords)</pre>
<div class="block">Exclude these coordinates from result vector.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>coords</code> - Coordinates.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>this.</dd>
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<h4>extract</h4>
<pre>public&nbsp;<a href="../../../../../../../org/apache/ignite/ml/structures/LabeledVector.html" title="class in org.apache.ignite.ml.structures">LabeledVector</a><span class='angle_bracket'>&lt;</span><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">L</a><span class='angle_bracket'>&gt;</span>&nbsp;extract(<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">K</a>&nbsp;k,
<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">V</a>&nbsp;v)</pre>
<div class="block">Extract <a href="../../../../../../../org/apache/ignite/ml/structures/LabeledVector.html" title="class in org.apache.ignite.ml.structures"><code>LabeledVector</code></a> from key and value.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../../org/apache/ignite/ml/trainers/FeatureLabelExtractor.html#extract-K-V-">extract</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../../org/apache/ignite/ml/trainers/FeatureLabelExtractor.html" title="interface in org.apache.ignite.ml.trainers">FeatureLabelExtractor</a><span class='angle_bracket'>&lt;</span><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">K</a>,<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">V</a>,<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">L</a><span class='angle_bracket'>&gt;</span></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>k</code> - Key.</dd>
<dd><code>v</code> - Value.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Labeled vector.</dd>
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<h4>feature</h4>
<pre>protected abstract&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a>&nbsp;feature(<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">C</a>&nbsp;coord,
<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">K</a>&nbsp;key,
<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">V</a>&nbsp;value)</pre>
<div class="block">Extracts feature value by given coordinate.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>coord</code> - Coordinate.</dd>
<dd><code>key</code> - Key.</dd>
<dd><code>value</code> - Value.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>feature value.</dd>
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<pre>protected abstract&nbsp;<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">L</a>&nbsp;label(<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">C</a>&nbsp;coord,
<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">K</a>&nbsp;key,
<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">V</a>&nbsp;value)</pre>
<div class="block">Extract label value by given coordinate.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>coord</code> - Coordinate.</dd>
<dd><code>key</code> - Key.</dd>
<dd><code>value</code> - Value.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>label value.</dd>
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<pre>protected abstract&nbsp;<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">L</a>&nbsp;zero()</pre>
<div class="block">Returns default label value for unlabeled data.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>label value.</dd>
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<pre>protected abstract&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><span class='angle_bracket'>&lt;</span><a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">C</a><span class='angle_bracket'>&gt;</span>&nbsp;allCoords(<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">K</a>&nbsp;key,
<a href="../../../../../../../org/apache/ignite/ml/dataset/feature/extractor/Vectorizer.html" title="type parameter in Vectorizer">V</a>&nbsp;value)</pre>
<div class="block">Returns list of all coordinate with feature values.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>key</code> - Key.</dd>
<dd><code>value</code> - Value.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>all coordinates list.</dd>
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<h4>createVector</h4>
<pre>protected&nbsp;<a href="../../../../../../../org/apache/ignite/ml/math/primitives/vector/Vector.html" title="interface in org.apache.ignite.ml.math.primitives.vector">Vector</a>&nbsp;createVector(int&nbsp;size)</pre>
<div class="block">Create an instance of vector.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>size</code> - Vector size.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>vector.</dd>
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