---
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layout: documentation
id: built-in-builder
---

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<div class="col-md-8 second-column">
    <section id="overview">
        <h2 class="section-title">Pipeline Builder<a href="#"><i class="top-link fas fa-fw fa-angle-double-up"></i></a></h2>

        <p>
            {% scaladoc NCPipelineBuilder NCPipelineBuilder %} class
            is designed for simplifying preparing {% scaladoc NCPipeline NCPipeline %} instance.
            It allows to prepare {% scaladoc NCPipeline NCPipeline %} instance
            adding pipeline chain components via its methods.
            Also, it contains a number of {% scaladoc NCPipelineBuilder#withSemantic-fffff4b0 withSemantic() %} methods
            which allow to prepare pipeline instance based on
            {% scaladoc nlp/parsers/NCSemanticEntityParser NCSemanticEntityParser %} and configured language.
            Currently only <b>English</b> language is supported.
            Pipeline for <b>English</b> language is created with useful set of built-in components.
        </p>
    </section>

    <section id="examples">
        <h2 class="section-title">Examples <a href="#"><i class="top-link fas fa-fw fa-angle-double-up"></i></a></h2>

        <p><b>Simple example</b>:</p>

        <pre class="brush: scala, highlight: []">
            val pipeline = new NCPipelineBuilder().withSemantic("en", "lightswitch_model.yaml").build
        </pre>
        <ul>
            <li>
                It defines pipeline with all built-in English language components and one semantic entity parser with
                model defined in <code>lightswitch_model.yaml</code>.
            </li>
            <li>
                It adds to the pipeline by default token parser implementation
                {% scaladoc nlp/parsers/NCOpenNLPTokenParser NCOpenNLPTokenParser %} and
                following token enrichers implementations:
                {% scaladoc nlp/enrichers/NCOpenNLPLemmaPosTokenEnricher NCOpenNLPLemmaPosTokenEnricher %},
                {% scaladoc nlp/enrichers/NCEnStopWordsTokenEnricher NCEnStopWordsTokenEnricher %},
                {% scaladoc nlp/enrichers/NCEnSwearWordsTokenEnricher NCEnSwearWordsTokenEnricher %},
                {% scaladoc nlp/enrichers/NCEnQuotesTokenEnricher NCEnQuotesTokenEnricher %},
                {% scaladoc nlp/enrichers/NCEnDictionaryTokenEnricher NCEnDictionaryTokenEnricher %},
                {% scaladoc nlp/enrichers/NCEnBracketsTokenEnricher NCEnBracketsTokenEnricher %}.
            </li>
        </ul>

        <p><b>Pipeline creation example constructed from built-in components:</b></p>

        <pre class="brush: scala, highlight: [2, 6, 7, 12, 13, 14, 15, 16]">
            val pipeline =
                val stanford =
                    val props = new Properties()
                    props.setProperty("annotators", "tokenize, ssplit, pos, lemma, ner")
                    new StanfordCoreNLP(props)
                val tokParser = new NCStanfordNLPTokenParser(stanford)
                val stemmer = new NCSemanticStemmer():
                    private val ps = new PorterStemmer
                    override def stem(txt: String): String = ps.synchronized { ps.stem(txt) }

                new NCPipelineBuilder().
                    withTokenParser(tokParser).
                    withTokenEnricher(new NCEnStopWordsTokenEnricher()).
                    withEntityParser(NCSemanticEntityParser(stemmer, tokParser, "pizzeria_model.yaml")).
                    withEntityParser(new NCStanfordNLPEntityParser(stanford, Set("number"))).
                    build
        </pre>
        <ul>
            <li>
                <code>Line 2</code> defines configured <code>StanfordCoreNLP</code> class instance.
                Look at <a href="https://nlp.stanford.edu/">Stanford NLP</a> documentation for more details.
            </li>
            <li>
                <code>Line 6</code> defines token parser <code>NCStanfordNLPTokenParser</code>, pipeline mandatory component.
                Note that this one instance is used for two places: in pipeline definition on <code>line 12</code> and
                in {% scaladoc nlp/parsers/NCSemanticEntityParser NCSemanticEntityParser %} definition on <code>line 14</code>.
            </li>

            <li>
                <code>Line 13</code> defines configured
                {% scaladoc nlp/enrichers/NCEnStopWordsTokenEnricher NCEnStopWordsTokenEnricher  %}
                token enricher.
            </li>
            <li>
                <code>Line 14</code> defines {% scaladoc nlp/parsers/NCSemanticEntityParser NCSemanticEntityParser %}
                configured in YAML file <code>pizzeria_model.yaml</code>.
                It uses also simple implementation of {% scaladoc nlp/parsers/NCSemanticStemmer NCSemanticStemmer %}
                created on <code>line 7</code> and token parser prepared on <code>line 6</code>.
            </li>
            <li>
                <code>Line 15</code> defines <code>NCStanfordNLPEntityParser</code> based on Stanford NER
                configured for number values detection.
            </li>
            <li>
                <code>Line 16</code> defines pipeline building.
            </li>
        </ul>

        <p><b>Example with pipeline configured by custom components:</b></p>

        <pre class="brush: scala, highlight: []">
            val pipeline =
                new NCPipelineBuilder().
                    withTokenParser(new NCFrTokenParser()).
                    withTokenEnricher(new NCFrLemmaPosTokenEnricher()).
                    withTokenEnricher(new NCFrStopWordsTokenEnricher()).
                    withEntityParser(new NCFrSemanticEntityParser("lightswitch_model_fr.yaml")).
                    build
        </pre>

        <ul>
            <li>
                There is the pipeline created for work with French Language. All components of this pipeline are custom components.
                You can get fore information at examples description chapters:
                <a href="examples/light_switch_fr.html">Light Switch FR</a> and
                <a href="examples/light_switch_ru.html">Light Switch RU</a>.
                Note that these custom components are mostly wrappers on existing open source on NLPCraft built-in solutions and
                should be prepared just once when you start work with new language.
            </li>
        </ul>
    </section>
</div>
<div class="col-md-2 third-column">
    <ul class="side-nav">
        <li class="side-nav-title">On This Page</li>
        <li><a href="#overview">Overview</a></li>
        <li><a href="#examples">Examples</a></li>
        {% include quick-links.html %}
    </ul>
</div>