Work Done at Kosmix (2010-2011)
While at Kosmix I was involved in a number of projects that built and used Web-scale knowledge bases, especially for information extraction and integration, entity disambiguation, and social media analytics. Parts of these projects are described in the following papers: I also worked on event detection and monitoring for social media (with papers describing these under preparation).

A talk that describes work at Kosmix at a high level: Social Media, Data Integration, and Human Computation.