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    Ontology-based information extraction from UNGA Resolutions

    by Abhimanyu Sarvagyam 02/11/2019 09:43 AM GMT

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          Dear Unite Ideas reviewers,
          Our team has been working on a submission for the "UNGA Resolutions: Automatic Information Extraction and Knowledge Elicitation" challenge. Due to unexpected demands on our time we haven't been able to complete the extraction but we'd like to inform you about a semantic engine we've explored and customised using the UNDO ontology. We think it will be a valuable resource in the UN's quest for "effective and efficient information management".
          Our solution has been developed on Apache Stanbol RESTful Semantic Engine, which is part of the open source Apache Software Foundation. Its main purpose is semantic content management and it helps in extending traditional content management systems with semantic services, which aligns directly with the objectives of this challenge. Their official website is:
          Stanbol allows us to add our own ontology, index it, and add it as an enhancement engine along with other OpenNLP and DBpedia engines developed by the community.
          The OpenNLP engines help with basic NLP tasks like NER, POS, Tokenisation etc. and DBPedia fetches relevant annotations from Wikipedia. Along with these, we added the undo.owl ontology from
          All these engines can be run together in the form of an "Enhancement Chain". This is the feature that makes Stanbol stand out. Here's a demo of all the engines in action: On clicking the name of the chain, you can see the engines it's made up of. After the engines finish running if you click the name of the chain you can see the time for which each chain ran.
          This is one of the UNGA documents we've used to test the results:
          Here are a series of steps to try it out:
          1 Go to
            On the main page you'll find general information about Stanbol.
          2 In the nav bar, click on the "/enhancer" link.
          3 In another tab, open a test resolution:
          4 Select all and copy.
          5 Switch to the Stanbol tab. Paste the text on your clipboard into the text area.
          6 Click the "Run engines" button.
          In the result you'll see a list of extracted entities, such as "Social Council", "Member States", etc. These entities are identified and extracted by the aforementioned "Enhancement Chains". To see the active chains, either click on the "Enhancement Chains" and link at the upper right, or go directly to: Here you will see all available chains. The five UN-related chains are listed at the end:
          • undo+dbpedia-disambiguation ( id: 258, ranking: 0, impl: ListChain )
          • undo+dbpedia-fst-linking ( id: 255, ranking: 0, impl: ListChain )
          • undo+dbpedia-named-entity-linking ( id: 259, ranking: 0, impl: ListChain )
          • undo+dbpedia-proper-noun ( id: 256, ranking: 0, impl: ListChain )
          • undo-plain ( id: 257, ranking: 0, impl: ListChain )
          Once you test and identify the right chain for your purpose, you can upload the files in this page - - and get the output/annotations in the desired format.
          We hope that you will find this useful. Should you want to investigate further, it's fairly easy to install Stanbol locally and import the UNDO as well as other ontologies.
          Best regards,
          Kit, Varun, & Abhi

          Co-authors to your solution

          Abhimanyu Sarvagyam, Kit Blake, Varun Subramanian

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            on 05/28/2019
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