"The International Semantic Web Conference is a major international forum at which research on all aspects of the Semantic Web is presented." as they say on the site.

A bit off topic, to remind myself where and how things stand...
I am still trying to introduce myself to the exciting world of semantic web. Still looking for a definition that I could relate to. The latest I have dug up was that there two ways to deal with information that currently available on WWW and constantly added to it.
One is to use sophisticated technics to parse existing text on WWW and process it using probably even more complicated technologies (which is what search engines are doing today).
Another way is to start presenting the knowledge on WWW along with metadata that can be consumed and processed using simpler technologies.
The later is what W3C is trying to standardize, put to use and what is called Semantic Web.