System for correcting grammar based on parts of speech probability
First Claim
1. In a grammar checking system in which an input sentence is first tagged as to parts of speech, apparatus for correcting word usage in said input sentence by checking for easily confused words, comprising:
- a list of easily confused words;
means for ascertaining the probability of the part of speech tag sequence of a candidate word in the input sentence and an easily confused word from said list in a candidate sentence,said ascertaining means including means for detecting that input or candidate sentence having the higher part of speech tag sequence probability; and
,means for selecting as the correct word the word in that input or candidate sentence having the highest part of speech tag sequence probability.
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Abstract
In a grammar checking system in which a sentence is first tagged as to pa of speech, the probability of the sequence of the parts of speech being correct is utilized to correct improper use of troublesome words, especially those identical sounding words which are spelled differently. The system corrects word usage based not on the probability of the entire sentence being correct but rather on the probability of the sequence of the parts of speech being correct. As part of the subject invention, the parts of speech sequence probability is utilized in part of speech sequence verification, underlying spelling recovery, auxiliary verb correction, determiner correction, and in a context-sensitive dictionary lookup.
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Citations
5 Claims
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1. In a grammar checking system in which an input sentence is first tagged as to parts of speech, apparatus for correcting word usage in said input sentence by checking for easily confused words, comprising:
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a list of easily confused words; means for ascertaining the probability of the part of speech tag sequence of a candidate word in the input sentence and an easily confused word from said list in a candidate sentence, said ascertaining means including means for detecting that input or candidate sentence having the higher part of speech tag sequence probability; and
,means for selecting as the correct word the word in that input or candidate sentence having the highest part of speech tag sequence probability. - View Dependent Claims (2, 3, 4, 5)
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Specification