| 摘要 |
PROBLEM TO BE SOLVED: To provide a device and the like capable of tagging real-time keywords to an event position in which a special trend different from the ordinary can be observed, on the basis of multiple comment sentences.SOLUTION: A tagging apparatus includes: comment collection means for collecting comment sentences including a posting time and position information from a blog server; event position detecting means for detecting an event position in which predetermined number or more comment sentences are concentrated in a predetermined position range, using the multiple comment sentences posted in a predetermined time zone; comment keyword extraction means for extracting words from a group of the comment sentences for every event position, counting an appearance frequency for every word, and extracting a comment keyword the appearance frequency of which becomes a prescribed number or more; and tagging means for associating the comment keyword as a tag with every event position. |
