  My second area of interest is content-based querying of complex data such as sequences and image sets.  The  <A HREF="http://www.cs.wisc.edu/~praveen/projects/seq.html"> <B>SEQ</B></A> system deals with  queries over sequence data, and focuses on DBMS design and optimization issues related to sequence data.  It is a part of the   <A HREF="http://www.cs.wisc.edu/condor/NEXT.html"> <B>NEXT!</B></A> project, and is joint work with Prof. Livny.   An important aspect of this work is its use for identifying trends in the data, or in general, identifying useful patterns of information.    In the PIQ project, the goal is to support content-based retrieval from large sets of images.  Our focus is on developing and implementing an expressive data definition language that can be used to customize a general image database system to take advantage of specialized information about a given collection of images that is to be indexed and queried. <p>
