Table 12: Processing accuracy of removal of noise words (Data consists of 1000 samples extracted randomly from the 2005 Tokyo prefecture telephone directory).

Number of samples 1000 　 Is it necessary to remove noise words from names, as determined by a manual check? Yes: 654 No: 346 　 Can we get the same result as manual processing using the FAW dictionary? Yes: 513 No: 141 　 　 　 Can we get the same result as manual processing using the dictionary of geographic names and station names? 　 Yes: 70 No: 71 　 　 　 Can we get the same result as manual processing after LFAW removal? 　 　 Yes:11 No:60 　 　 　 Do pure names remain after all noise word removal processing? 　 　 　 　 Yes: 330 No: 16 Sum total Number of data processed successfully 513 70 11 0 330 0 924 Processing accuracy (%) 　 92.40