Patent Document ID: 8874571
Application ID: 11595506

Base Claim:
1. A computer-implemented text analysis method comprising: accessing a plurality of text items regarding a plurality of different topics, wherein the text items were published over a time period; dividing the time period into a plurality of intervals; using dates of publication of the text items, associating the text items with the time intervals; for individual ones of the intervals, counting a number of the text items which include a given text pattern; comparing the counted numbers of text items which include the given text pattern for the individual intervals with one another; and identifying a topical change in the text items using results of the comparing.

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Claim 14:
14. The method of claim 1 wherein the topical change is the given text pattern, and wherein the processing circuitry is further configured to identify the given text pattern as the topical change as a result of an increased occurrence of the given text pattern in the text items which have dates of publication within one of the intervals compared with previous intervals.