Extraction of information from clinical reports

摘要

A phrase matching system is described. The system includes a training engine and a matching engine. The training engine is configured to: learn terms and term variants from a training corpus, wherein the terms and the term variants correspond to a specialized dictionary related to the training corpus; and generate a list of negative indicators found in the training corpus. The matching engine is configured to: perform a partial match of the terms and the term variants in a set of electronic documents to create initial match results; and perform a negation test using the negative indicators and a positive terms test using the terms and the term variants on the initial match results to remove matches from the initial match results that fail either the negation test or the positive terms test, resulting in final match results.

主权项

1. A computer program product, comprising:
a computer readable storage medium to store a computer readable program, wherein the computer readable program, when executed by a processor within a computer, causes the computer to perform operations for extracting information from electronic documents, the operations comprising:
learning terms and term variants from a training corpus, wherein the terms and the term variants correspond to a specialized dictionary related to the training corpus;generating a list of negative indicators found in the training corpus;performing a partial match of the terms and the term variants in a set of electronic documents to create initial match results; andperforming a negation test using the negative indicators and a positive terms test using the terms and the term variants on the initial match results to remove matches from the initial match results that fail either the negation test or the positive terms test, resulting in final match results.