『『トピックマップ』で検索精度を向上』(HotWired Japan)経由で，
This specification provides a model and grammar for representing the structure of information resources used to define topics, and the associations (relationships) between topics. Names, resources, and relationships are said to be characteristics of abstract subjects, which are called topics.
誰がどうやってタグを付けるのだろう1?
表層の表現だけを基にして機械的にタグ付けできるのなら，あらかじめその手のタグをわざわざ付けておく必要はほとんど無い． ↩︎