Word Sense Disambiguation Using Semantic Categories, Domain Information and Knowledge Sources
Sc (By Research) Thesis, Language Technologies Research Centre International Institute of Information Technology, Hyderabad(2010)
摘要
Sense of a word can be defined as the meaning of the word, the way in which a word can be interpreted. In view of simplicity and to distinguish between a sense and a semantic category, we define semantic category of a word as its coarse grained sense. In this chapter we introduce you the task of semantic category labeling and propose two corpus driven unsupervised approaches.Given a word, its admissible semantic categories as defined in a knowledge base and its context, the task of semantic category labeling (SCL) is to assign the most appropriate semantic category to the word. For the task of SCL, our language of interest is Hindi. 1 An example is shown in Table 3.1. We use ontological categories (section 1.2) of Hindi WordNet as our semantic category inventory. Semantic categories of the word billA are shown in figure 2.1.
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