1. A computer implemented method for identifying relationships between text documents and structured variables pertaining to said text documents, comprising: providing a dictionary of keywords in said text documents; forming categories of said text documents using said dictionary and an automated algorithm; counting occurrences of said structured variables, said categories and combinations of said structured variables and said categories for said said text documents; calculating probabilities of occurrences of said combinations of structured variables and categories; and identifying a relationship between a structured variable of said structured variables and text documents included in a category of said categories based on a probability of occurrence of a combination of said structured variable and said category.