Methods and apparatus for performing spelling corrections using one or more variant hash tables
First Claim
1. A method for correcting spelling of at least one candidate word, said method comprising:
- obtaining at least one variant dictionary hash table based on variants of a set of known correctly spelled words, wherein said variants are obtained by applying one or more of a deletion, insertion, replacement, and transposition operation on said correctly spelled words;
obtaining from the at least one candidate word one or more lookup variants using one or more of said deletion, insertion, replacement, and transposition operations;
evaluating one or more of said at least one candidate word and said lookup variants against said at least one variant dictionary hash table; and
indicating a candidate correction if there is at least one match in the at least one variant dictionary hash table.
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Abstract
Methods and apparatus are provided for performing spelling corrections using one or more variant hash tables. The spelling of at least one candidate word is corrected by obtaining at least one variant dictionary hash table based on variants of a set of known correctly spelled words, wherein the variants are obtained by applying one or more of a deletion, insertion, replacement, and transposition operation on the correctly spelled words; obtaining from the candidate word one or more lookup variants using one or more of the deletion, insertion, replacement, and transposition operations; evaluating one or more of the candidate word and the lookup variants against the at least one variant dictionary hash table; and indicating a candidate correction if there is at least one match in the at least one variant dictionary hash table.
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Citations
24 Claims
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1. A method for correcting spelling of at least one candidate word, said method comprising:
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obtaining at least one variant dictionary hash table based on variants of a set of known correctly spelled words, wherein said variants are obtained by applying one or more of a deletion, insertion, replacement, and transposition operation on said correctly spelled words; obtaining from the at least one candidate word one or more lookup variants using one or more of said deletion, insertion, replacement, and transposition operations; evaluating one or more of said at least one candidate word and said lookup variants against said at least one variant dictionary hash table; and indicating a candidate correction if there is at least one match in the at least one variant dictionary hash table. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A system for correcting spelling of at least one candidate word, said system comprising:
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a memory; and at least one processor, coupled to the memory, operative to; obtain at least one variant dictionary hash table based on variants of a set of known correctly spelled words, wherein said variants are obtained by applying one or more of a deletion, insertion, replacement, and transposition operation on said correctly spelled words; obtain from the candidate word one or more lookup variants using one or more of said deletion, insertion, replacement, and transposition operations; evaluate one or more of said candidate word and said lookup variants against said at least one variant dictionary hash table; and indicate a candidate correction if there is at least one match in the at least one variant dictionary hash table.
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24. An article of manufacture for correcting spelling of at least one candidate word, comprising a machine readable medium containing one or more programs which when executed implement the steps of:
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obtaining at least one variant dictionary hash table based on variants of a set of known correctly spelled words, wherein said variants are obtained by applying one or more of a deletion, insertion, replacement, and transposition operation on said correctly spelled words; obtaining from the candidate word one or more lookup variants using one or more of said deletion, insertion, replacement, and transposition operations; evaluating one or more of said candidate word and said lookup variants against said at least one variant dictionary hash table; and indicating a candidate correction if there is at least one match in the at least one variant dictionary hash table.
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Specification