CGSC 2001 Lecture Notes - Lecture 3: Natural Language Understanding, Natural-Language Processing, Terry Winograd
15 Aug 2016
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Document Summary
Milestone 1: development of artificial devices for natural language processing. Natural language understanding: the ability to understand/speak natural language is one of the most sophisticated cognitive abilities, language is a tool for thinking. One of the first ai systems to perform a realistic task: compared to eliza: To understand english sentences, understand whether the command it"s given is possible, understand how to perform actions in its world, and have a. Syntactic: parse information: decode grammatical structure of sentences it encounters, which units are nouns and which units are verbs. Semantic: infer meaning: assign meaning to individual words in ways that reveal what the sentence is stating. Cognitive-deductive: integration of new information with one already possessed: call upon information it already has to obey command, fulfill request, or answer a question. Each system makes use of various procedures to achieve its goal (ex. Sentence program check whether relevant syntactic units are present) Cognitive processes treated as a set of instructions.
