Welcome to the web page of the database research group of the Department of Computer Science of the University of Maryland.

We are located in the A. V. Williams building of the College Park campus. The 6 faculty members of the group lead efforts in many different research areas through various projects and work closely with the Institute for Advanced Computer Studies and the Institute for Systems Research. Our group is considered one of the best in the country.

Introduction to the UMD DB Group (Presentation to the incoming graduate students, Fall 2008)

Very Brief Overview of the UMD DB Group (UPenn DB/IR Day)


Current Research

  • Exploring data management challenges in: life sciences databases, sensor networks, social networks, moving objects, P2P.
  • Data warehouses; OLAP.
  • Distributed data acquisition and data dissemination.
  • Spatial databases; visualization and indexing for high-dimensional data.
  • Developing statistical modeling techniques and integrating them with traditional database systems.
  • Management of probabilistic, imprecise and incomplete data.
  • Adaptive query processing; Data Streams.
Recent Publications

Representing and Querying Correlated Tuples in Probabilistic Databases; Prithviraj Sen, Amol Deshpande; To appear in ICDE 2007.
MauveDB: Supporting Model-based User Views in Database Systems; Amol Deshpande, Samuel Madden; SIGMOD 2006.
Query Planning in the Presence of Overlapping Sources; Jens Bleiholder, Samir Khuller, Felix Naumann, Louiqa Raschid, Yao Wu; EDBT 2006.
Flow Algorithms for Two Pipelined Filter Ordering Problems; Anne Condon, Amol Deshpande, Lisa Hellerstein, and Ning Wu; PODS 2006.
A Latent Dirichlet Model for Unsupervised Entity Resolution; Indrajit Bhattacharya, Lise Getoor; SIAM Conference on Data Mining, April 2006.
Name Reference Resolution in Organizational Email Archives; Chris Diehl, Lise Getoor and Galileo Namata; SIAM Conference on Data Mining, April 2006.
Approximate Data Collection in Sensor Networks using Probabilistic Models; David Chu, Amol Deshpande, Joseph M. Hellerstein, Wei Hong; ICDE 2006.
AReNA: Adaptive Distributed Catalog Infrastructure Based On Relevance Networks; Vladimir Zadorozhny, Avigdor Gal, Louiqa Raschid, Qiang Ye; VLDB 2005.
Efficient query processing on spatial networks; J. Sankaranarayanan, H. Alborzi, and H.Samet; ACM International Symposium on Advances in Geographic Information Systems, Nov 2005.
Maintaining Implicated Statistics in Constrained Environments; Yannis Sismanis, Nick Roussopoulos; ICDE 2005.
Aggregate Operators in Probabilistic Databases; R. Ross, V.S. Subrahmanian and J. Grant; Journal of the ACM, Jan 2005.
Toward On-line Schema Evolution for Non-stop Systems; Amol Deshpande, Michael Hicks; HPTS 2005.
A Fast Approximation Scheme for Probabilistic Wavelet Synopses; Antonios Deligiannakis, Minos N. Garofalakis, Nick Roussopoulos; SSDBM 2005.
Deduplication and Group Detection Using Links; Indrajit Bhattacharya and Lise Getoor; KDD Workshop on Link Analysis and Group Detection, Seattle, WA, August 2004.
Unsupervised Word Sense Disambiguation using Bilingual Probabilistic Models; Indrajit Bhattacharya, Lise Getoor and Yoshua Bengio; 42nd Annual Meeting of the Association for Computational Linguistics, Barcelona, SP, July 2004.


Fall 2005: New Course: Data Management in New Emerging Environments
Spring 2005: Prof. Amol Deshpande joins the database group. Welcome!
Fall 2004: Yannis Sismanis (PhD) joins IBM Almaden.
Fall 2003: Laura Bright (PhD) joins OGI.
Fall 2002: Alexandros Labrinidis (PhD) joins University of Pittsburg.
Winter 2001: Prof. Lise Getoor joins the database group. Welcome!
Fall 2001: Prof. Nick Roussopoulos is elected Fellow of the ACM. Congratulations!

Thank you for visiting http://www.cs.umd.edu/areas/db/
Last update was on Sat Dec 10 13:34:36 EST 2005
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