Browsing by Author "Jones, Doug"
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Item Automatic Extraction of Semantic Classes from Syntactic Information in Online Resources(1998-10-15) Dorr, Bonnie J.; Jones, DougThis paper addresses the issue of word-sense ambiguity in extraction from machine-readable resources for the construction of large-scale knowledge sources. We describe two experiments: one which took word-sense distinctions into account, resulting in 97.9% accuracy for semantic classification of verbs based on (Levin, 1993); and one which ignored word-sense distinctions, resulting in 6.3% accuracy. These experiments were dual purpose: (1) to validate the central thesis of the work of (Levin, 1993), i.e., that verb semantics and syntactic behavior are predictably related; (2) to demonstrate that a 20-fold improvement can be achieved in deriving semantic information from syntactic cues if we first divide the syntactic cues into distinct groupings that correlate with different word senses. Finally, we show that we can provide effective acquisition techniques for novel word senses using a combination of online sources. (Also cross-referenced as UMIACS-TR-95-65)Item Predicting Semantics from Syntactic Cues -- An Evaluation of Levin's English Verb Classes and Alternations(1998-10-15) Jones, DougThe relationship between the meaning of verbs and their syntactic patterns has recently been explored in the landmark study of (Levin, 1993). Although the central thesis of this book is that verb semantics and syntactic behavior are predictably related, the large scope of the work makes it difficult to verify. I show that it is possible to guess the semantic class of a verb based on syntactic cues automatically extracted from the example sentences in her book. In particular, it is possible to correctly guess 94.8% of Levin's semantic classes if the parses contain prepositions, negative evidence is included, and word senses are disambiguated. This report includes the syntactic signatures of Levin's 191 semantic classes, in addition to a detailed description of how the syntactic signatures behave according to the different parameters involving negative evidence, prepositions, and disambiguation. (Also cross-referenced as UMIACS-TR-95-121)Item Predicting Semantics from Syntactic Cues -- An Evaluation of Levin's English Verb Classes and Alternations(1998-10-15) Jones, Doug; Li, LunIn this report, we describe our results of carefully studying the first chapter of two published Chinese translations of Noam Chomsky's Syntactic Structures, as translated by Wang and Lu (1966) and Xing et al. (1979). Our first step was to create a word-by-word alignment, in as much as that was possible. We then examined ways we could use the alignment to generate other resources, such as a dictionary and a procedure for automating the translation process. We then retranslated the text, using the rules we developed. We will present this set of rules and the resulting translation in the body of this report. The appendix contains the published Chinese texts that we worked from, the alignments of these texts, and the small dictionary we produced. (Also cross-referenced as UMIACS-TR-95-122)