Internet: Semantics: 'ReadWriteWeb' explains semantic tagging service

Semantic Tagging Service Zigtag (Finally!) Launches

by Sarah Perez (ReadWriteWeb,Dec29,2k8)

It was two years ago that we first heard of Zigtag, a service that promised to "transform how people search, save and share knowledge & information." Now, after a nine-month private beta, this semantic tagging service has finally launched. But is Zigtag's bookmarking tool intelligent enough for 2009?

About Zigtag

For those of you who don't know, Zigtag is another entry in the social bookmarking collection of tools. Like delicious, Diigo, and Ma.gnolia, Zigtag helps you categorize your bookmarks and share them with others. When Zigtag went into development, bookmarking was all the rage. The company's goal was to make bookmarking easier by adding a layer of semantics to the tags themselves.

Zigtag, you see, understands the meaning of the words you assign to a tag. When you tag to a page, Zigtag actually assigns it meaning rather than just a simple word. If that sounds revolutionary...well, that's because it is. Sort of.

Not the Only Semantic Tagging Service

Because of Zigtag's slow progress, they can no longer claim to be the only semantic tagging application available today. Another, Faviki, also offers an intelligent tagging service based on structured data. Both services attempt to address the problem of user-generated tags. That is, even though what you tag "NY" may be the same link that I tagged "New York," no bookmarking service ever knew the tags were related.

Technotes, by Technowlb

Zigtag and Faviki attack this problem in different ways. Faviki suggests tags for you to use, not from a community of users and their tagging history, but from structured information extracted from DBpedia, a community-maintained database created by extracting information from Wikipedia.

Zigtag, however, eschews suggestions and lets you tag items as you wish. It doesn't matter what personal system you use for tagging (one word, two words, underscores, plus signs, etc.) because Zigtag understands the meaning of the tags. In Zigtag, a link tagged "New York" is returned along with other links tagged "New_York." Zigtag also understands that one tag may have different meanings and groups those items accordingly. For example, there's a New York and Company clothing store and a New York in England that may have been tagged "new york." That level of understanding is something that's unique to Zigtag and sets it apart from other bookmarking services.

Thanks to the service's ability to understand meaning, Zigtag users can join groups related a shared interest. Since Zigtag knows what you mean by your tags, it is, in theory, easier to find links you would be interested in on Zigtag than with other bookmarking services.

This blog has experimented with numerous tagging schemes, but always on the fly and without a full review of past schemes, which m+t have harvested more consistency. The idea of Zigtag, however, comes into its own around a given community of users within the general community of Zigtaggers, the more narrow community able to stabilize protocols and usages, even using an in-group's jargon, technical terms, and coinages--NuSpels, if you cawt the kind uv thing I have in mind.