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<header> <h1 class="entry-title"><a href=""
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rel="bookmark" title="Permalink to Using dbpedia to get languages influences">Using dbpedia to get languages influences</a></h1> </header>
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<div class="entry-content">
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<abbr class="published" title="2011-08-16T00:00:00">
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Tue 16 August 2011
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<address class="vcard author">
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By <a class="url fn" href="./author/Alexis Métaireau.html">Alexis Métaireau</a>
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</address>
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<p>In <a href="./category/python.html">python</a>. </p>
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<p>tags: <a href="./tag/dbpedia.html">dbpedia</a><a href="./tag/sparql.html">sparql</a><a href="./tag/python.html">python</a></p>
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<p>While browsing the Python's wikipedia page, I found information about the languages
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influenced by python, and the languages that influenced python itself.</p>
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<p>Well, that's kind of interesting to know which languages influenced others,
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it could even be more interesting to have an overview of the connexion between
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them, keeping python as the main focus.</p>
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<p>This information is available on the wikipedia page, but not in a really
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exploitable format. Hopefully, this information is provided into the
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information box present on the majority of wikipedia pages. And… guess what?
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there is project with the goal to scrap and index all this information in
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a more queriable way, using the semantic web technologies.</p>
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<p>Well, you may have guessed it, the project in question in dbpedia, and exposes
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information in the form of RDF triples, which are way more easy to work with
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than simple HTML.</p>
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<p>For instance, let's take the page about python:
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<a class="reference external" href="http://dbpedia.org/page/Python_%28programming_language%29">http://dbpedia.org/page/Python_%28programming_language%29</a></p>
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<p>The interesting properties here are "Influenced" and "InfluencedBy", which
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allows us to get a list of languages. Unfortunately, they are not really using
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all the power of the Semantic Web here, and the list is actually a string with
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coma separated values in it.</p>
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<p>Anyway, we can use a simple rule: All wikipedia pages of programming languages
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are either named after the name of the language itself, or suffixed with "(
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programming language)", which is the case for python.</p>
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<p>So I've built <a class="reference external" href="https://github.com/ametaireau/experiments/blob/master/influences/get_influences.py">a tiny script to extract the information from dbpedia</a> and transform them into a shiny graph using graphviz.</p>
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<p>After a nice:</p>
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<pre class="literal-block">
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$ python get_influences.py python dot | dot -Tpng > influences.png
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</pre>
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<p>The result is the following graph (<a class="reference external" href="http://files.lolnet.org/alexis/influences.png">see it directly here</a>)</p>
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<img alt="http://files.lolnet.org/alexis/influences.png" src="http://files.lolnet.org/alexis/influences.png" style="width: 800px;" />
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<p>While reading this diagram, keep in mind that it is a) not listing all the
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languages and b) keeping a python perspective.</p>
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<p>This means that you can trust the scheme by following the arrows from python to
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something and from something to python, it is not trying to get the matching
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between all the languages at the same time to keep stuff readable.</p>
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<p>It would certainly be possible to have all the connections between all
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languages (and the resulting script would be easier) to do so, but the resulting
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graph would probably be way less readable.</p>
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<p>You can find the script <a class="reference external" href="https://github.com/ametaireau/experiments">on my github account</a>. Feel free to adapt it for
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whatever you want if you feel hackish.</p>
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<li><a href="http://biologeek.org">Biologeek</a></li>
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<li><a href="http://filyb.info/">Filyb</a></li>
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<li><a href="http://www.libert-fr.com">Libert-fr</a></li>
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<li><a href="http://prendreuncafe.com/blog/">N1k0</a></li>
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<li><a href="http://ziade.org/blog">Tarek Ziadé</a></li>
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<li><a href="http://zubin71.wordpress.com/">Zubin Mithra</a></li>
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