HT06, tagging paper, taxonomy, Flickr, academic article, to read

Summary: this paper introduces a taxonomy of tagging systems, with implications on user tagging behavior and structure of the resultant tags. It also analyzes Flickr tag usage.

Observation: tags are not hierarchical or semantically organized, but things like this can probably be extracted from tag statistics.

Taxonomy (some dimensions omitted): 1) Tagging rights (who can tag what) 2) Tagging support (when tagging, can users see other tags already provided, do they get suggestions, or do they get nothing). Providing suggestions or showing existing tags probably encourages vocabulary convergence. 3) Aggregation model (does each object have a set of tags, or a distribution of tags). 4) Source of material (contributed by user, or globally available). 5) Resource connectivity (are there relationships among taggable objects).

User incentives: 1) Future retrieval (so I can find my own items later). 2) Contribution (provide useful information about an item). 3) Attract attention (enable other users to find my items).

Observation: users with more photos tend to use more tags (unlike on del.icio.us). Users with more "friends" also tend to use more tags (but only weakly to have more photos).

Observation: the set of tags used by individual users grows with the number of photos in multiple different ways.

Observation: users tend to share vocabulary with their "friends" to a small extent.

Flickrを対象に利用者とタグの関係を調査。また，タグ付け行為のインセンティブに関する考察もあり。

Gives a nice brief overview of what tagging is and how it can be used.

Interesting study of tagging system, with a multi-dimensional classification.

Briefly discusses the implications of different tagging strategies (eg: free-for-all tagging, using viewable and/or suggested tags, etc.)

need a citation list

Introduction of a taxonomy framework for studies of tag-based systems (tagging rights, tagging support, aggregation model, object type, source of material, resource connectivity, social connectivity). List of incentives for usage of is presented (future retrieval, contribution and sharing, attract attention, play and competition, self presentation, opinion expression)