indexing_formats_tei.html
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<!DOCTYPE html>
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<title>Multi Tier Annotation Search – TEI</title>
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<h2>MTAS</h2>
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Indexing</a>
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<h1>TEI</h1>
<p>For indexing <a class="externalLink" href="http://www.tei-c.org/">ISO-TEI</a> resources, the <i>mtas.analysis.parser.MtasTEIParser</i> extending the abstract <i>MtasXMLParser</i> is available; full examples of configuration files are provided on <a class="externalLink" href="https://github.com/meertensinstituut/mtas/tree/master/conf/parser/mtas">GitHub</a>.</p>
<div class="source">
<div class="source"><pre class="prettyprint"><!-- START CONFIGURATION MTAS PARSER -->
<parser name="mtas.analysis.parser.MtasTEIParser">
...
<!-- START MAPPINGS -->
<mappings>
...
</mapping>
<!-- END MAPPINGS --->
...
</parser>
<!-- END CONFIGURATION MTAS PARSER -->
</pre></div></div>
<p>The syntax of the parser part in the <a href="indexing_configuration.html#configuration">configuration file</a> is, besides from the <i>name</i> attribute, almost identical to the configuration of the <a href="indexing_formats_folia.html">FoLiA-parser</a>. An additional feature is the definition and use of <i>variables</i>, again illustrated and explained with examples.</p>
<p><b>Variables</b></p>
<p>From occurring elements, variable-mappings may be derived and defined. Just as <i>references</i>, these definitions are placed within a <i>variables</i>-tag outside the <i>mappings</i>-tag within the <i>parser</i> configuration section. In the example below the variable-mapping <i>interval</i> is defined from each occurring <i>when</i>-tag, defining a mapping from the <i>id</i> of the <i>when</i>-tag to value of the <i>interval</i> attribute.</p>
<div class="source">
<div class="source"><pre class="prettyprint"><variables>
<variable name="when" value="interval">
<value>
<item type="attribute" name="interval" />
</value>
</variable>
</variables>
</pre></div></div>
<p>This will define for a TEI resource containing</p>
<div class="source">
<div class="source"><pre class="prettyprint">...
<timeline unit="s">
<when xml:id="TLI_0"/>
<when xml:id="TLI_1" interval="0.64" since="#TLI_0"/>
<when xml:id="TLI_2" interval="9.7" since="#TLI_0"/>
<when xml:id="TLI_3" interval="10.216" since="#TLI_0"/>
<when xml:id="TLI_4" interval="13.052" since="#TLI_0"/>
<when xml:id="TLI_5" interval="16.28" since="#TLI_0"/>
...
</pre></div></div>
<p>a mapping <i>interval</i> that will map for example “TLI_3” to “10.216”. Now, when defining other elements, for example a word, we can refer to this defined <i>variable</i>: </p>
<div class="source">
<div class="source"><pre class="prettyprint"><mapping type="word" name="anchor">
<token type="string" offset="false" realoffset="false" parent="false">
<pre>
<item type="name" />
<item type="string" value=".time" />
</pre>
<post>
<item type="variableFromAttribute" name="interval" value="synch" />
</post>
</token>
</mapping>
</pre></div></div>
<p>describing the mapping for resource elements like</p>
<div class="source">
<div class="source"><pre class="prettyprint"><anchor synch="#TLI_3"/>
</pre></div></div>
<p>This will define the <i>postfix</i> value from the generated token as the value in the defined mapping <i>interval</i> for the value defined by the <i>sync</i> attribute of the matching <i>anchor</i> tag. In the example above, this will generate a token with <i>prefix</i> “anchor.time” and <i>postfix</i> “10.216”.</p>
<p>Furthermore, if for an element in the mapping a <i>start</i> and <i>end</i> is defined, for example</p>
<div class="source">
<div class="source"><pre class="prettyprint"><mapping type="groupAnnotation" name="span" start="from" end="to">
...
</mapping>
</pre></div></div>
<p>the start and end position of the elements referenced in the defined attributes is used for position and offset of the generated tokens. So, if the source contains</p>
<div class="source">
<div class="source"><pre class="prettyprint">...
<w xml:id="w115">hier</w>
<w xml:id="w116">sehn</w>
<w xml:id="w117">wir</w>
...
</pre></div></div>
<p>and</p>
<div class="source">
<div class="source"><pre class="prettyprint">...
<span from="#w116" to="#w116">sehen</span>
...
</pre></div></div>
<p>the tokens generated from the groupAnnotation mapping on the <i>span</i>-tag will have the position and offset from the <i>word</i>-tag with <i>id</i> “w116”.</p>
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