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<html><head><meta charset="utf-8"></meta><meta name="viewport" content="width=device-width, initial-scale=1"></meta><title>NCEnStopWordsTokenEnricher</title><link rel="shortcut icon" type="image/x-icon" href="../../../../../favicon.ico"></link><script type="text/javascript" src="../../../../../scripts/theme.js"></script><script type="text/javascript" src="../../../../../scripts/searchData.js" defer="true"></script><script type="text/javascript" src="../../../../../scripts/scastieConfiguration.js" defer="true"></script><link rel="stylesheet" href="../../../../../styles/nord-light.css"></link><link rel="stylesheet" href="../../../../../styles/scalastyle.css"></link><link rel="stylesheet" href="../../../../../styles/colors.css"></link><link rel="stylesheet" href="../../../../../styles/dotty-icons.css"></link><link rel="stylesheet" href="../../../../../styles/diagram.css"></link><link rel="stylesheet" href="../../../../../styles/filter-bar.css"></link><link rel="stylesheet" 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id="content"><div><div class="cover-header"><span class="micon cl"></span><h1>NCEnStopWordsTokenEnricher</h1></div><div class="signature monospace"><span class="annotations monospace"></span><div class="signature"><span class="modifiers"></span><span class="kind"><span t="k">class </span></span><a href="NCEnStopWordsTokenEnricher.html" class="documentableName ">NCEnStopWordsTokenEnricher</a><span>(<span t="k"></span><span t="k"></span>addSet: <a href="https://www.scala-lang.org/api/2.13.8/scala/collection/Set.html" t="t">Set</a>[<a href="https://www.scala-lang.org/api/2.13.8/scala/Predef$.html#String" t="t">String</a>], <span t="k"></span>exclSet: <a href="https://www.scala-lang.org/api/2.13.8/scala/collection/Set.html" t="t">Set</a>[<a href="https://www.scala-lang.org/api/2.13.8/scala/Predef$.html#String" t="t">String</a>], <span t="k"></span>stemmer: <a href="../stemmer/NCStemmer.html" t="t">NCStemmer</a>)<span t="k"> extends </span><a href="../../NCTokenEnricher.html" t="t">NCTokenEnricher</a><span t="k"> with </span><span data-unresolved-link="" t="t">LazyLogging</span></span></div></div><div class="cover"><div class="doc"><p>Stopword <a href="../../NCTokenEnricher.html">token enricher</a> for English (EN) language. Stopwords are the words
which are filtered out (i.e. stopped) before processing of natural language text because they are
insignificant.</p>
<p>This enricher adds <code>stopword</code> boolean <a href="../../NCPropertyMap.html">metadata</a> property to the <a href="../../NCToken.html">token</a>
instance if the word it represents is an English stopword. The value <code>true</code> of this metadata property indicates that
this word is detected as a stopword, <code>false</code> value indicates otherwise. This implementation works off the
algorithm that uses an internal list of English stopwords as well as a procedural logic to determine the stopword
status of the token. This algorithm should work fine for most of the general uses cases. User can also add
additional stopwords or exceptions for the existing ones using corresponding parameters in <a href="NCEnStopWordsTokenEnricher.html">NCEnStopWordsTokenEnricher</a>
constructor.</p>
<p>More information about stopwords can be found at <a href="https://en.wikipedia.org/wiki/Stop_word">https://en.wikipedia.org/wiki/Stop_word</a>.</p>
<p><strong>NOTE:</strong> this implementation requires <code>lemma</code> and <code>pos</code> string <a href="../../NCPropertyMap.html">metadata</a> properties that
contain token's lemma and part of speech accordingly. You can configure <a href="NCOpenNLPTokenEnricher.html">NCOpenNLPTokenEnricher</a> with the model
for English language that would provide these metadata properties before this enricher in your <a href="../../NCPipeline.html">pipeline</a>.</p>
</div><dl class="attributes"><dt>Value parameters:</dt><dd><dl class="attributes"><dt>addSet</dt><dd><p>User defined collection of additional stopwords. These words will be stemmatized by the given <code>stemmer</code>
before attempting to find a match. Default value is an empty set.</p>
</dd><dt>exclSet</dt><dd><p>User defined collection of exceptions, i.e. the words which should not be marked as stopwords during
processing. These words will be stemmatized by the given <code>stemmer</code> before attempting to find a match.
Default value is an empty set.</p>
</dd><dt>stemmer</dt><dd><p>English stemmer implementation. Default value is the instance of <a href="../stemmer/NCEnStemmer.html">NCEnStemmer</a>.</p>
</dd></dl></dd><dt>Source:</dt><dd><a href="https://github.com/apache/incubator-nlpcraft/blob/master/nlpcraft/src/main/scala/org/apache/nlpcraft/nlp/enrichers/NCEnStopWordsTokenEnricher.scala#L192">NCEnStopWordsTokenEnricher.scala</a></dd></dl></div><div class="tabs single"><div class="names"><button data-togglable="graph" class="tab showGraph">Graph</button><button data-togglable="supertypes" class="tab ">Supertypes</button></div><div class="contents"><div data-togglable="graph" class="tab showGraph"><div id="inheritance-diagram" class="diagram-class showGraph"><input value="Reset zoom" type="button" class="btn" onclick="zoomOut()"></input><svg id="graph"></svg><script type="text/dot" id="dot"> digraph g {
node0 [id=node0, label="<span style=\"color: #FFFFFF;\">class <a href=\"NCEnStopWordsTokenEnricher.html\" t=\"t\">NCEnStopWordsTokenEnricher</a></span>", style="fill: #45AD7D;"];
node1 [id=node1, label="<span style=\"color: #FFFFFF;\">class <span data-unresolved-link=\"\" t=\"t\">Object</span></span>", style="fill: #45AD7D;"];
node2 [id=node2, label="<span style=\"color: #FFFFFF;\">class <span data-unresolved-link=\"\" t=\"t\">Any</span></span>", style="fill: #45AD7D;"];
node3 [id=node3, label="<span style=\"color: #FFFFFF;\">trait <span data-unresolved-link=\"\" t=\"t\">Matchable</span></span>", style="fill: #1CAACF;"];
node4 [id=node4, label="<span style=\"color: #FFFFFF;\">trait <a href=\"../../NCTokenEnricher.html\" t=\"t\">NCTokenEnricher</a></span>", style="fill: #1CAACF;"];
node5 [id=node5, label="<span style=\"color: #FFFFFF;\">trait <a href=\"../../NCLifecycle.html\" t=\"t\">NCLifecycle</a></span>", style="fill: #1CAACF;"];
node6 [id=node6, label="<span style=\"color: #FFFFFF;\">trait <span data-unresolved-link=\"\" t=\"t\">LazyLogging</span></span>", style="fill: #1CAACF;"];
node0 -> node1;
node1 -> node2;
node1 -> node3;
node3 -> node2;
node0 -> node4;
node4 -> node1;
node4 -> node5;
node5 -> node1;
node0 -> node6;
node6 -> node1;
}
</script></div></div><div data-togglable="supertypes" class="tab "><div class="symbol monospace"><div>trait <span data-unresolved-link="" t="t">LazyLogging</span></div><div>trait <a href="../../NCTokenEnricher.html" t="t">NCTokenEnricher</a></div><div>trait <a href="../../NCLifecycle.html" t="t">NCLifecycle</a></div><div>class <span data-unresolved-link="" t="t">Object</span></div><div>trait <span data-unresolved-link="" t="t">Matchable</span></div><div>class <span data-unresolved-link="" t="t">Any</span></div></div></div></div></div><div class="documentableFilter"><div class="filterUpperContainer"><button class="filterToggleButton" data-test-id="filterToggleButton">
<svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24">
<path d="M0 0h24v24H0z" fill="none"/>
<path d="M10 6L8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/>
</svg>
</button><input class="filterableInput" placeholder="Filter all members" data-test-id="filterBarInput"></input></div><div class="filterLowerContainer"></div></div><div class="membersList"><div class="tabs"><div class="names"><button data-togglable="Value members" class="tab selected">Value members</button></div><div class="contents"><div data-togglable="Value members" class="tab selected"><h2 data-togglable="Value members">Value members</h2><div class="documentableList"><h3 class="groupHeader">Concrete methods</h3><div class="documentableElement" id="enrich-7e2" data-f-keywords="override"><a link="NCEnStopWordsTokenEnricher.html#enrich-7e2" class="documentableAnchor"></a><div><span class="annotations monospace"></span></div><div class="header monospace"><div class="signature"><span class="modifiers"><span t="k">override </span></span><span class="kind"><span t="k">def </span></span><a href="NCEnStopWordsTokenEnricher.html#enrich-7e2" class="documentableName ">enrich</a><span>(<span t="k"></span><span t="k"></span>req: <a href="../../NCRequest.html" t="t">NCRequest</a>, <span t="k"></span>cfg: <a href="../../NCModelConfig.html" t="t">NCModelConfig</a>, <span t="k"></span>toks: <a href="https://www.scala-lang.org/api/2.13.8/scala/collection/immutable/List.html" t="t">List</a>[<a href="../../NCToken.html" t="t">NCToken</a>]): <a href="https://www.scala-lang.org/api/2.13.8/scala/Unit.html" t="t">Unit</a></span></div></div><div class="docs"><span class="modifiers"></span><div><div class="originInfo"></div><div class="memberDocumentation"><div class="documentableBrief doc"><p>Enriches, or otherwise modifies, previously parsed <a href="../../NCToken.html">tokens</a>.</p>
</div><div class="cover"><div class="doc"><p>Enriches, or otherwise modifies, previously parsed <a href="../../NCToken.html">tokens</a>.</p>
</div><dl class="attributes"><dt>Definition Classes</dt><dd><div><a href="../../NCTokenEnricher.html">NCTokenEnricher</a></div></dd><dt>Source:</dt><dd><a href="https://github.com/apache/incubator-nlpcraft/blob/master/nlpcraft/src/main/scala/org/apache/nlpcraft/nlp/enrichers/NCEnStopWordsTokenEnricher.scala#L537">NCEnStopWordsTokenEnricher.scala</a></dd></dl></div></div></div></div></div></div><div class="documentableList"><h3 class="groupHeader">Inherited methods</h3><div class="documentableElement" id="onStart-fffff138" data-f-inherited="NCLifecycle"><a link="NCEnStopWordsTokenEnricher.html#onStart-fffff138" class="documentableAnchor"></a><div><span class="annotations monospace"></span></div><div class="header monospace"><div class="signature"><span class="modifiers"></span><span class="kind"><span t="k">def </span></span><a href="NCEnStopWordsTokenEnricher.html#onStart-fffff138" class="documentableName ">onStart</a><span>(<span t="k"></span><span t="k"></span>cfg: <a href="../../NCModelConfig.html" t="t">NCModelConfig</a>): <a href="https://www.scala-lang.org/api/2.13.8/scala/Unit.html" t="t">Unit</a></span></div></div><div class="docs"><span class="modifiers"></span><div><div class="originInfo"></div><div class="memberDocumentation"><div class="documentableBrief doc"><p>Called when the component starts. Default implementation is no-op.</p>
</div><div class="cover"><div class="doc"><p>Called when the component starts. Default implementation is no-op.</p>
</div><dl class="attributes"><dt>Value parameters:</dt><dd><dl class="attributes"><dt>cfg</dt><dd><p>Configuration of the model this component is associated with.</p>
</dd></dl></dd><dt>Inherited from:</dt><dd><a href="../../NCLifecycle.html#onStart-fffff138">NCLifecycle</a></dd><dt>Source:</dt><dd><a href="https://github.com/apache/incubator-nlpcraft/blob/master/nlpcraft/src/main/scala/org/apache/nlpcraft/NCLifecycle.scala#L36">NCLifecycle.scala</a></dd></dl></div></div></div></div></div><div class="documentableElement" id="onStop-fffff138" data-f-inherited="NCLifecycle"><a link="NCEnStopWordsTokenEnricher.html#onStop-fffff138" class="documentableAnchor"></a><div><span class="annotations monospace"></span></div><div class="header monospace"><div class="signature"><span class="modifiers"></span><span class="kind"><span t="k">def </span></span><a href="NCEnStopWordsTokenEnricher.html#onStop-fffff138" class="documentableName ">onStop</a><span>(<span t="k"></span><span t="k"></span>cfg: <a href="../../NCModelConfig.html" t="t">NCModelConfig</a>): <a href="https://www.scala-lang.org/api/2.13.8/scala/Unit.html" t="t">Unit</a></span></div></div><div class="docs"><span class="modifiers"></span><div><div class="originInfo"></div><div class="memberDocumentation"><div class="documentableBrief doc"><p>Called when the component stops. Default implementation is no-op.</p>
</div><div class="cover"><div class="doc"><p>Called when the component stops. Default implementation is no-op.</p>
</div><dl class="attributes"><dt>Value parameters:</dt><dd><dl class="attributes"><dt>cfg</dt><dd><p>Configuration of the model this component is associated with.</p>
</dd></dl></dd><dt>Inherited from:</dt><dd><a href="../../NCLifecycle.html#onStop-fffff138">NCLifecycle</a></dd><dt>Source:</dt><dd><a href="https://github.com/apache/incubator-nlpcraft/blob/master/nlpcraft/src/main/scala/org/apache/nlpcraft/NCLifecycle.scala#L43">NCLifecycle.scala</a></dd></dl></div></div></div></div></div></div><div class="documentableList"><h3 class="groupHeader">Inherited fields</h3><div class="documentableElement" id="logger-0" data-f-visibility="protected" data-f-keywords="lazy" data-f-inherited="LazyLogging"><a link="NCEnStopWordsTokenEnricher.html#logger-0" class="documentableAnchor"></a><div><span class="annotations monospace"><a href="https://www.scala-lang.org/api/2.13.8/scala/transient.html" t="t">@transient</a> </span></div><div class="header monospace"><div class="signature"><span class="modifiers"><span t="k">lazy protected </span></span><span class="kind"><span t="k">val </span></span><a href="NCEnStopWordsTokenEnricher.html#logger-0" class="documentableName ">logger</a><span>: <span data-unresolved-link="" t="t">Logger</span></span></div></div><div class="docs"><span class="modifiers"></span><div><div class="originInfo"></div><div class="memberDocumentation"><div class="documentableBrief doc"></div><div class="cover"><div class="doc"></div><dl class="attributes"><dt>Inherited from:</dt><dd><span data-unresolved-link="">LazyLogging</span></dd><dt>Source:</dt><dd><a href="https://github.com/apache/incubator-nlpcraft/blob/master/src/main/scala/com/typesafe/scalalogging/Logging.scala#L12">Logging.scala</a></dd></dl></div></div></div></div></div></div></div></div></div></div></div></div></main><footer><div id="generated-by"><span class="footer-text">Generated by</span><a href="https://github.com/lampepfl/dotty/tree/master/scaladoc"><img src="../../../../../images/scaladoc_logo.svg" alt="scaladoc" class="scaladoc_logo"></img><img src="../../../../../images/scaladoc_logo_dark.svg" alt="scaladoc" class="scaladoc_logo_dark"></img></a></div><span id="footer-text">Apache NLPCraft</span><div class="socials"><span class="footer-text">Social links</span><a href="https://github.com/apache/incubator-nlpcraft"><span class="social-icon" data-icon-path="github-icon-black.png"></span></a></div><div class="mode"><span class="footer-text">Mode</span><label id="theme-toggle" class="switch"><input type="checkbox"></input><span class="slider"></span></label></div><span class="go-to-top-icon"><a href="#container"><span class="icon-vertical_align_top"></span><span class="footer-text">Back to top</span></a></span></footer></div></div></body></html>