... contextually co-occurred with the title words and keywords: ‘driver’, ‘clutch’, ‘trunk’, and so on. They are words in first-order co-occurrence with the title words and the keywords. To gather ... title word with the maximum similarity score with a word W, cmax is the category of the title word Tmax, and Tsecondmax is other title word with the second high similarity score with the ... Newsgroups, 5 in WebKB, and 3 in Reuters empirically. Generally, we recommend that the number of keywords be between 2 and 5. 5.2.2 Comparing our Method Using TCFP with those Using other Classifiers...