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Date: Thu, 07 Nov 1996 19:08:59 GMTServer: NCSA/1.5Content-type: text/htmlLast-modified: Sun, 28 Jul 1996 00:44:15 GMTContent-length: 5864<HTML><HEAD><TITLE> Raghu Ramakrishnan's Home Page </TITLE></HEAD><BODY BGCOLOR="#FFdead"><HR><H1> <!WA0><!WA0><!WA0><!WA0><!WA0><!WA0><!WA0><!WA0><!WA0><!WA0><!WA0><!WA0><!WA0><!WA0><!WA0><!WA0><!WA0><!WA0><!WA0><!WA0><!WA0><!WA0><!WA0><!WA0><!WA0><!WA0><!WA0><!WA0><!WA0><!WA0><!WA0><IMG ALIGN=MIDDLE SRC="http://www.cs.wisc.edu/~raghu//~pubs/faculty-info/ramakrishnan.gif"> Raghu Ramakrishnan </H1><BASE HREF="http://www.cs.wisc.edu/~raghu/">Associate Professor of Computer Science(<!WA1><!WA1><!WA1><!WA1><!WA1><!WA1><!WA1><!WA1><!WA1><!WA1><!WA1><!WA1><!WA1><!WA1><!WA1><!WA1><!WA1><!WA1><!WA1><!WA1><!WA1><!WA1><!WA1><!WA1><!WA1><!WA1><!WA1><!WA1><!WA1><!WA1><!WA1><A HREF="http://www.cs.wisc.edu/cgi-bin/finger?raghu">raghu@cs.wisc.edu</A>)<BR><BR><!WA2><!WA2><!WA2><!WA2><!WA2><!WA2><!WA2><!WA2><!WA2><!WA2><!WA2><!WA2><!WA2><!WA2><!WA2><!WA2><!WA2><!WA2><!WA2><!WA2><!WA2><!WA2><!WA2><!WA2><!WA2><!WA2><!WA2><!WA2><!WA2><!WA2><!WA2><A HREF="http://www.cs.wisc.edu/">Department of Computer Sciences</A><BR><!WA3><!WA3><!WA3><!WA3><!WA3><!WA3><!WA3><!WA3><!WA3><!WA3><!WA3><!WA3><!WA3><!WA3><!WA3><!WA3><!WA3><!WA3><!WA3><!WA3><!WA3><!WA3><!WA3><!WA3><!WA3><!WA3><!WA3><!WA3><!WA3><!WA3><!WA3><A HREF="gopher://gopher.wisc.edu/">University of Wisconsin - Madison</A><BR><BR>1210 West Dayton Street,Madison, WI 53706 USA<BR><BR>Phone: 608-262-9759 <I> (Department: 262-1204, Fax: 262-9777) </I><UL><LI> <!WA4><!WA4><!WA4><!WA4><!WA4><!WA4><!WA4><!WA4><!WA4><!WA4><!WA4><!WA4><!WA4><!WA4><!WA4><!WA4><!WA4><!WA4><!WA4><!WA4><!WA4><!WA4><!WA4><!WA4><!WA4><!WA4><!WA4><!WA4><!WA4><!WA4><!WA4><A HREF="#education">Education</A><LI> <!WA5><!WA5><!WA5><!WA5><!WA5><!WA5><!WA5><!WA5><!WA5><!WA5><!WA5><!WA5><!WA5><!WA5><!WA5><!WA5><!WA5><!WA5><!WA5><!WA5><!WA5><!WA5><!WA5><!WA5><!WA5><!WA5><!WA5><!WA5><!WA5><!WA5><!WA5><A HREF="#teaching">Teaching Activities</A><LI> <!WA6><!WA6><!WA6><!WA6><!WA6><!WA6><!WA6><!WA6><!WA6><!WA6><!WA6><!WA6><!WA6><!WA6><!WA6><!WA6><!WA6><!WA6><!WA6><!WA6><!WA6><!WA6><!WA6><!WA6><!WA6><!WA6><!WA6><!WA6><!WA6><!WA6><!WA6><A HREF="#interests">Research Interests</A><LI> <!WA7><!WA7><!WA7><!WA7><!WA7><!WA7><!WA7><!WA7><!WA7><!WA7><!WA7><!WA7><!WA7><!WA7><!WA7><!WA7><!WA7><!WA7><!WA7><!WA7><!WA7><!WA7><!WA7><!WA7><!WA7><!WA7><!WA7><!WA7><!WA7><!WA7><!WA7><A HREF="#projects">Research Projects</A><LI> <!WA8><!WA8><!WA8><!WA8><!WA8><!WA8><!WA8><!WA8><!WA8><!WA8><!WA8><!WA8><!WA8><!WA8><!WA8><!WA8><!WA8><!WA8><!WA8><!WA8><!WA8><!WA8><!WA8><!WA8><!WA8><!WA8><!WA8><!WA8><!WA8><!WA8><!WA8><A HREF="#theses">Ph.D. Graduates</A></UL><P><H3> <A NAME="education"> Education: </A></H3><UL><LI> Ph.D. University of Texas at Austin, 1987.<LI> B.Tech., Indian Institute of Technology, Madras, 1983.</UL><P><H3><A NAME="teaching"> Teaching Activities: </A></H3><UL><LI> Course text: <!WA9><!WA9><!WA9><!WA9><!WA9><!WA9><!WA9><!WA9><!WA9><!WA9><!WA9><!WA9><!WA9><!WA9><!WA9><!WA9><!WA9><!WA9><!WA9><!WA9><!WA9><!WA9><!WA9><!WA9><!WA9><!WA9><!WA9><!WA9><!WA9><!WA9><!WA9><A HREF="http://www.cs.wisc.edu/coral/minibase/dbbook.html"><B>Database Management Systems</B></A><LI> Software for educational use: <!WA10><!WA10><!WA10><!WA10><!WA10><!WA10><!WA10><!WA10><!WA10><!WA10><!WA10><!WA10><!WA10><!WA10><!WA10><!WA10><!WA10><!WA10><!WA10><!WA10><!WA10><!WA10><!WA10><!WA10><!WA10><!WA10><!WA10><!WA10><!WA10><!WA10><!WA10><A HREF="http://www.cs.wisc.edu/coral/minibase/minibase.html"><B>Minibase</B></A>and<!WA11><!WA11><!WA11><!WA11><!WA11><!WA11><!WA11><!WA11><!WA11><!WA11><!WA11><!WA11><!WA11><!WA11><!WA11><!WA11><!WA11><!WA11><!WA11><!WA11><!WA11><!WA11><!WA11><!WA11><!WA11><!WA11><!WA11><!WA11><!WA11><!WA11><!WA11><A HREF="http://www.cs.wisc.edu/coral/"> <B>Coral</B></A></UL>The text Database Management Systems, published by McGraw-Hill, is aimedat first and second courses in database systems at the undergraduateand graduate levels. The Minibase relational DBMS was developed inconjunction with this text. The Coral system is also used in coursesthat deal with logic databases at several schools.<P><H3><A NAME="interests"> Research Interests: </A></H3><UL><LI> Integrating heterogeneous data sources<LI> Content-based querying and indexing of sequence and image data <LI> Exploratory analysis of large data sets (data mining)<LI> Extending database query languages using constraints and deduction</UL>As the use of databases grows and diversifies, it is increasinglyimportant to be able to access data from dispersed, heterogeneous,independently developed sources easily. In the RODIN project,and its successor, the C.O.D. project, I am investigating severalissues: formal techniques and practical toolkits forsemantic integration, supporting multiple levels of serviceand access to a database, and database access in a networkedcluster of machines. This is joint work with Profs. Ioannidis and Livny. <p>In recent work, the results on visual data explorationfrom the <!WA12><!WA12><!WA12><!WA12><!WA12><!WA12><!WA12><!WA12><!WA12><!WA12><!WA12><!WA12><!WA12><!WA12><!WA12><!WA12><!WA12><!WA12><!WA12><!WA12><!WA12><!WA12><!WA12><!WA12><!WA12><!WA12><!WA12><!WA12><!WA12><!WA12><!WA12><A HREF="http://www.cs.wisc.edu/condor/NEXT.html"> <B>NEXT!</B></A>project, which is joint work with Prof. Livny, are being applied to data integration, and querying over the Web. <p>My second area of interest is content-based querying of complex data such assequences and image sets. The <!WA13><!WA13><!WA13><!WA13><!WA13><!WA13><!WA13><!WA13><!WA13><!WA13><!WA13><!WA13><!WA13><!WA13><!WA13><!WA13><!WA13><!WA13><!WA13><!WA13><!WA13><!WA13><!WA13><!WA13><!WA13><!WA13><!WA13><!WA13><!WA13><!WA13><!WA13><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 optimizationissues related to sequence data. It is a part of the <!WA14><!WA14><!WA14><!WA14><!WA14><!WA14><!WA14><!WA14><!WA14><!WA14><!WA14><!WA14><!WA14><!WA14><!WA14><!WA14><!WA14><!WA14><!WA14><!WA14><!WA14><!WA14><!WA14><!WA14><!WA14><!WA14><!WA14><!WA14><!WA14><!WA14><!WA14><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 identifyingtrends in the data, or in general, identifying useful patterns ofinformation. In the PIQ project, the goal is to support content-based retrieval fromlarge sets of images. Our focus is on developing and implementingan expressive data definition language that can be used to customizea general image database system to take advantage of specializedinformation about a given collection of images that is to be indexedand queried. <p>My interest in querying and analysis of data covers data exploration andmining. We have developed a powerful clustering algorithm called<!WA15><!WA15><!WA15><!WA15><!WA15><!WA15><!WA15><!WA15><!WA15><!WA15><!WA15><!WA15><!WA15><!WA15><!WA15><!WA15><!WA15><!WA15><!WA15><!WA15><!WA15><!WA15><!WA15><!WA15><!WA15><!WA15><!WA15><!WA15><!WA15><!WA15><!WA15><A HREF="http://www.cs.wisc.edu/~zhang/birch.html"> <B>BIRCH</B></A>for large datasets and a visual data exploration tool called<!WA16><!WA16><!WA16><!WA16><!WA16><!WA16><!WA16><!WA16><!WA16><!WA16><!WA16><!WA16><!WA16><!WA16><!WA16><!WA16><!WA16><!WA16><!WA16><!WA16><!WA16><!WA16><!WA16><!WA16><!WA16><!WA16><!WA16><!WA16><!WA16><!WA16><!WA16><A HREF="http://www.cs.wisc.edu/~jussi/devise/devise.html"> <B>DEVise</B></A>as part of the <!WA17><!WA17><!WA17><!WA17><!WA17><!WA17><!WA17><!WA17><!WA17><!WA17><!WA17><!WA17><!WA17><!WA17><!WA17><!WA17><!WA17><!WA17><!WA17><!WA17><!WA17><!WA17><!WA17><!WA17><!WA17><!WA17><!WA17><!WA17><!WA17><!WA17><!WA17><A HREF="http://www.cs.wisc.edu/condor/NEXT.html"> <B>NEXT!</B></A>project.A long-standing research interest is the extension of relational databasequery languages with logic programming featuressuch as structured terms and recursion, and the use ofarithmetic constraints to specify data and queries morecompactly and efficiently.An ongoing project involves the continued development and use of the CORALdeductive system. The evaluation is based upon bottom-up fixpointevaluation techniques,and several optimizations are applied to make it efficientacross a broad range of programs. <p><P><H3><A NAME="projects"> Research Projects: </A></H3><UL><LI> <!WA18><!WA18><!WA18><!WA18><!WA18><!WA18><!WA18><!WA18><!WA18><!WA18><!WA18><!WA18><!WA18><!WA18><!WA18><!WA18><!WA18><!WA18><!WA18><!WA18><!WA18><!WA18><!WA18><!WA18><!WA18><!WA18><!WA18><!WA18><!WA18><!WA18><!WA18><A HREF="http://www.cs.wisc.edu/coral/"> <B>CORAL</B></A><LI> C.O.D. </A><LI> <!WA19><!WA19><!WA19><!WA19><!WA19><!WA19><!WA19><!WA19><!WA19><!WA19><!WA19><!WA19><!WA19><!WA19><!WA19><!WA19><!WA19><!WA19><!WA19><!WA19><!WA19><!WA19><!WA19><!WA19><!WA19><!WA19><!WA19><!WA19><!WA19><!WA19><!WA19><A HREF="http://www.cs.wisc.edu/condor/NEXT.html"> <B>NEXT!</B></A><LI> PIQ </A></UL><P><H3><A NAME="theses"> Ph.D. Graduates </A></H3><UL><P><strong>S. Sudarshan,</strong>Ph.D. August 1992,<CITE>Run-Time Optimizations in Bottom-Up Evaluation of Logic Programs,</CITE>First employment: AT&T Bell Labs, Murray Hill (sudarsha@research.att.com).<P><strong>D. Srivastava,</strong>Ph.D. August 1993,<CITE>Deductive and Object-Oriented Languages,</CITE>First employment: AT&T Bell Labs, Murray Hill (divesh@research.att.com).<P><strong>S. Dar,</strong>Ph.D. August 1993,<CITE>Design and Evaluation of Transitive Closure Algorithms,</CITE>First employment: AT&T Bell Labs, Murray Hill (dar@research.att.com).<P><strong>P. Seshadri,</strong>Ph.D. August 1996,<CITE>Sequence Data Management</CITE>First employment: Computer Sciences Department, Cornell University (praveen@cs.cornell.edu).<P></UL></BODY></HTML>⌨️ 快捷键说明
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