Patent Document ID: 8078452
Application ID: 12814730

Base Claim:
1. A computer implemented method for identifying phrasal terms, the method comprising: receiving a text having a plurality of words using a processing system; determining a plurality of contexts using the processing system, wherein a context comprises one or more words proximate to another word in the text; for each context, determining a first frequency using the processing system based on a number of occurrences of the context within the text; assigning a first rank to at least one context using the processing system based on the first frequency for the at least one context; determining multiple word-context pairs using the processing system; for each word-context pair, determining a second frequency using the processing system based on a number of occurrences of the word associated with the word-context pair being used in the context; assigning a second rank to at least one word-context pair using the processing system based on the second frequency for the at least one word-context pair; determining a rank ratio for each word-context pair based on the first rank and the second rank associated with the word-context pair using the processing system; determining a mutual rank ratio using the processing system based on multiple rank ratios; and identifying a phrasal term using the processing system based on the mutual rank ratio.

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Claim 2:
2. The method of claim 1 , wherein determining a mutual rank ratio comprises: selecting a first rank ratio for a first word-context pair, wherein the word in the first word-context pair comprises a first word, wherein the context in the first word-context pair comprises a second word following the word in the first word-context pair; selecting a second rank ratio for a second word-context pair, wherein the word in the second word-context pair comprises the second word, wherein the context in the second word-context pair comprises the first word preceding the word in the second word-context pair; and multiplying the first rank ratio by the second rank ratio to determine the mutual rank ratio.