SYMBOL STRING MATCHING MECHANISM

摘要

A two-stage, very fast symbol string matching mechanism measures the similarity of content between data sources, allowing for efficient detection and evaluation of exact as well as inexact matches. The disclosed approach pairs complementary encoding technique comprising a first fast lookup that identifies regions of possible similarity, and a second, more computationally intensive analysis that evaluates metrics of similarity and delimits copy boundaries. The original content remains private (encrypted) during processing.

主权项

1. A computer implemented method for comparing content between data sources comprising:
monitoring data on or in transit through a computer or network; identifying regions of interest in the data by comparing the data to a reference collection for at least one of short exact matches, incomplete matches, or keyword recognition; determining a probability of a soft match by estimating similarity between region of interest and the reference collection.