Browsing by Author "Pearl, Lisa"
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Item Lexical Resource Integration across the Syntax-Semantics Interface(2001-05-10) Green, Rebecca; Pearl, Lisa; Dorr, Bonnie J.; Resnik, PhilipThis paper examines extending a database of English verbs, grouped into syntactico-semantic classes, with WordNet senses. Probabilistic associations between theta-grids and WordNet verb frames, SEMCOR frequency data, and disambiguation based on an information-theoretic notion of semantic similarity are used. Mapping successes and failures are illustrated with 'drop'. (Cross-referenced as UMIACS-TR-2001-18) (Cross-refereneced as LAMP-TR-068)Item Mapping Lexical Entries in a Verbs Database to WordNet Senses(2001-05-10) Green, Rebecca; Pearl, Lisa; Dorr, Bonnie J.; Resnik, PhilipThis paper describes automatic techniques for mapping 9611 entries in a database of English verbs to WordNet senses. The verbs were initially grouped into 491 classes based on syntactic categories. Mapping these classified verbs into WordNet senses provides a resource that may be used for disambiguation in multilingual applications such as machine translation and cross-language information retrieval. Our techniques make use of (1) a training set of 1791 disambiguated entries, representing 1442 verb entries from 167 of the categories; (2) word sense probabilities based on frequency counts in a previously tagged corpus; (3) semantic similarity of WordNet senses for verbs within the same class; (4) probabilistic correlations between WordNet data and attributes of the verb classes. The best results achieved 72% precision and 58% recall, versus a lower bound of 62% precision and 38% recall for assigning the most frequently occurring WordNet sense, and an upper bound of 87% precision and 75% recall for human judgment. (Cross-referenced as UMIACS-TR-2001-18) (Cross-referenced as LAMP-TR-068)