Patent ID: 8489592

Claim:
A computer-implemented method for searching related terms using an electronic device, the method comprising: adding time stamps to a plurality of electronic documents, the time stamps being creation time of the electronic documents or last updated time of the electronic documents; generating a plurality of term document matrixes according to each of the time stamps, and storing each of the electronic documents having the same time stamp into a term-document matrix; ranking the term-document matrixes according to a sequence of the stamp time; adding specified term-document matrixes that are within a specified time range to obtain an updated term-document matrix: obtaining a plurality of related terms by calculating a relevance score between every two terms in the updated term-document matrix: calculating a time gap between each related term and a preset query term by calculating a minimum time period between a first set of time of each related term occurring in the specified electronic documents and a second set of time of the preset query term occurring in the specified electronic documents, and obtaining updated related terms by removing specified related terms whose time gap is greater than a preset value; and obtaining search results from a data source by performing a search operation according to the updated related terms, and displaying the search results on a display device of the electronic device.