Autor: |
Cohen K Bretonnel, Hunter Lawrence |
Jazyk: |
angličtina |
Rok vydání: |
2006 |
Předmět: |
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Zdroj: |
BMC Bioinformatics, Vol 7, Iss Suppl 3, p S5 (2006) |
Druh dokumentu: |
article |
ISSN: |
1471-2105 |
DOI: |
10.1186/1471-2105-7-S3-S5 |
Popis: |
Abstract Background Propositional representations of biomedical knowledge are a critical component of most aspects of semantic mining in biomedicine. However, the proper set of propositions has yet to be determined. Recently, the PASBio project proposed a set of propositions and argument structures for biomedical verbs. This initial set of representations presents an opportunity for evaluating the suitability of predicate-argument structures as a scheme for representing verbal semantics in the biomedical domain. Here, we quantitatively evaluate several dimensions of the initial PASBio propositional structure repository. Results We propose a number of metrics and heuristics related to arity, role labelling, argument realization, and corpus coverage for evaluating large-scale predicate-argument structure proposals. We evaluate the metrics and heuristics by applying them to PASBio 1.0. Conclusion PASBio demonstrates the suitability of predicate-argument structures for representing aspects of the semantics of biomedical verbs. Metrics related to theta-criterion violations and to the distribution of arguments are able to detect flaws in semantic representations, given a set of predicate-argument structures and a relatively small corpus annotated with them. |
Databáze: |
Directory of Open Access Journals |
Externí odkaz: |
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