i202 Fall 2009 School of Information, UC Berkeley

25 November 2009

Many of the concepts, technologies and techniques in information organization, information retrieval, and user interface design were developed for dedicated (as in a library) or desktop-based computing environments.  Mobile (or context-aware) applications pose new problems and provide new value in IR.   Multimedia content is similarly challenging old approaches to IO and IR.  Instead of trying to overcome the semantic gap, we can use the low-level features that can be extracted automatically to index the multimedia collection and then extract the same ones from a multimedia "query by example"  (as in the Shazam application, which can identify a song from a snippet recorded using a cell phone). 

Download recorded lecture from http://courses.ischool.berkeley.edu/i202/f09/files/202-20091125.mp3