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Natural language processing.docx PSY274

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Craig Chambers

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Natural language processing Two areas: 1.Comprehension: extracting info from language 2. Generation: process of conveying information using language 2 motivations: Automated systems that perform language-related tasks like phone-operated systems How language comprehension and generation occurs in humans 3 methods used in natural language processing: Statistical methods: uses large corpora of data to compute statistical properties such as word-occurrence and sequence formation. A bigram statistic captures the probability of a word with certain properties following another word with other properties It can identify speech labels like nouns and verbs. They are used for semantic disambiguation and structural disambiguation. Structural/pattern-based method: they define structural properties of language like formal grammars. They use lexical, syntactic and semantic information that match sentence fragments. They provide structural mo
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