Thomas Tolxdorff
2014
Information Extraction from German Patient Records via Hybrid Parsing and Relation Extraction Strategies
Hans-Ulrich Krieger
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Christian Spurk
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Hans Uszkoreit
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Feiyu Xu
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Yi Zhang
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Frank Müller
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Thomas Tolxdorff
Proceedings of the Ninth International Conference on Language Resources and Evaluation (LREC'14)
In this paper, we report on first attempts and findings to analyzing German patient records, using a hybrid parsing architecture and a combination of two relation extraction strategies. On a practical level, we are interested in the extraction of concepts and relations among those concepts, a necessary cornerstone for building medical information systems. The parsing pipeline consists of a morphological analyzer, a robust chunk parser adapted to Latin phrases used in medical diagnosis, a repair rule stage, and a probabilistic context-free parser that respects the output from the chunker. The relation extraction stage is a combination of two systems: SProUT, a shallow processor which uses hand-written rules to discover relation instances from local text units and DARE which extracts relation instances from complete sentences, using rules that are learned in a bootstrapping process, starting with semantic seeds. Two small experiments have been carried out for the parsing pipeline and the relation extraction stage.
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Co-authors
- Hans-Ulrich Krieger 1
- Christian Spurk 1
- Hans Uszkoreit 1
- Feiyu Xu 1
- Yi Zhang 1
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