Patent ID: 8589262

Claim:
A computer-implemented method for identifying and providing additional tax information, comprising: receiving tax information; determining, by computer, relevance of the additional tax information to the tax information, by: identifying a tax-information data structure in one-or-more documents, identifying the tax information and the additional tax information within the tax-information data structure, determining the hierarchical levels of the tax information and the additional tax information within the tax-information data structure, wherein the hierarchical levels are based upon the proximity of the tax information in relation to the additional tax information within the tax-information data structure, calculating a statistical metric that describes the statistical relationship between the tax information and the additional tax information in a tax-information data structure, including the hierarchical levels, based on coexistence of the tax information and the additional tax information at different hierarchical levels in the tax-information data structure, wherein the tax information and the additional tax information are not directly linked, and wherein determining the relevance involves determining a weighted sum of contributions associated with the co-existence of the tax information and the additional tax information at the different hierarchical levels in income-tax documents; identifying the additional tax information based on the relevance and a threshold; and providing the additional tax information.