The present invention relates to a method and apparatus for extracting relevant data. A first and a second set of data are accessed. The first set includes selected data. An edit sequence is determined between the first and the second sets, including considering at least repetitions for inclusion in...http://www.google.com.tw/patents/US7103838?utm_source=gb-gplus-share專利 US7103838 - Method and apparatus for extracting relevant data