Transcription of CHAPTER 17 Information Extraction
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CHAPTER 17 Information Extraction
Speech and Language processing . Daniel Jurafsky & James H. Martin. Copyright 2021. Allrights reserved. Draft of December 29, ExtractionI am the very model of a modern Major-General,I ve Information vegetable, animal, and mineral,I know the kings of England, and I quote the fights historicalFrom Marathon to Waterloo, in order and Sullivan,Pirates of PenzanceImagine that you are an analyst with an investment firm that tracks airline re given the task of determining the relationship (if any) between airline an-nouncements of fare increases and the behavior of their stocks the next day. His-torical data about stock prices is easy to come by, but what about the airline an-nouncements?
This chapter presents techniques for extracting limited kinds of semantic con-information tent from text. This process of information extraction (IE) turns the unstructured extraction information embedded in texts into structured data, for example for populating a relational database to enable further processing.
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