Patent ID: 8473498

Claim:
A method comprising: using a computer having a processor, and a memory having computer instructions to cause the processor to perform steps, including: filtering a plurality of unfiltered records having unstructured data according to at least one criterion into at least a first group and a second group, said first group and said second group each comprise at least two records, wherein said first group is different than said second group, the groups being stored in the memory; determining a first proportion of occurrence for a term by comparing a first number of records having at least one occurrence of said term in said first group to a first total number of records in said first group; determining a second proportion of occurrence for said term by comparing a second number of records to determine a number of occurrences of said term in said second group to a second total number of records in said second group; determining a first standard error range according to said first proportion of occurrence of said term, a first total number of records within said first group, and a level of confidence; determining a second standard error range according to said second proportion of occurrence of said term, a second total number of records within said second group, and said level of confidence; and indicating, via an overlap identifier, when said first standard error range and said second error range overlap.