The First-Level Categories of Yahoo Directories
|
Arts & Humanities Recreation & Sports Education Science Health |
News & Media Computers & Internet Regional Government Society & Culture |
Business & Economy Reference Entertainment Social Science |
Three URLs with Keywords, Descriptions, and Hyperlinks
| URL | Information | |
|---|---|---|
| URL1 | Keyword | baseball, MLB, bat, college baseball, home run, news |
| Description | Baseball.com – catch your Major League Baseball info | |
| Hyperlink | baseball (22), sports (12), news (3), computer (2) | |
| URL2 | Keyword | basketball, NBA, block, defense, foul out, NBA news |
| Description | Basketball! NBA news, basketball sites, NBA scores | |
| Hyperlink | basketball (17), football (6), sports (6), news (2) | |
| URL3 | Keyword | football, NFL, National Football League, block, defense |
| Description | Football! Chat room for football fans, football sites | |
| Hyperlink | football (33), sports (9) | |
An Example
Classify web pages by using a height-three modified decision tree which splits the root, depth-one nodes, and depth-two nodes based on keywords, descriptions, and hyperlinks, respectively. A classification starts with a web page at the root of the decision tree and traces paths downward to leaves, which give the categories of the page.
