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Upendranath Chakravarthy

Name

[Chakravarthy, Upendranath]
  • Professor

Biography

Prof. Chakravarthy is an ACM Distinguished Scientist. He is also an IEEE Senior Member. He organized (General Co-Chair) the 13th international Conference on Distributed Event-Based Systems (DEBS 2013). He spent the summer of 2013 and 2014 at the Rome Air Force Research Laboratory working on, respectively, continuous query processing over fault-tolerant networks and applying stream processing framework to video analysis. He is a co-author of the book “Stream Data Processing: A Quality of Service Perspective” published by springer in 2009.

Sharma Chakravarthy is Professor of Computer and Engineering Department at The University of Texas at Arlington, Texas. He established the Information Technology Laboratory (IT Lab)  at UT Arlington in Jan 2000 and currently heads it. Sharma Chakravarthy has also established the NSF funded, Distributed and Parallel Computing Cluster (DPCC@UTA) at UT Arlington in 2003. He is the recipient of the university-level “Creative Outstanding Researcher” award for 2003 and the department level senior outstanding researcher award in 2002.

He is well known for his work on stream data processing, semantic query optimization, multiple query optimization, active databases (HiPAC project at CCA and Sentinel project at the University of Florida, Gainesville), and more recently scalability issues in graph mining and its applications.  His group at UTA is currently adapting map/reduce and other paradigms for scaling graph mining algorithms to very large graphs and for answering graph queries.  His work on InfoSift – a classification system for text, email, and web used graph mining techniques. 

His current research includes web technologies, stream data processing, scaling graph mining algorithms for analyzing social networks, active and real-time databases, distributed and heterogeneous databases, query optimization, and multi-media databases. He has published over 185 papers/book chapters in refereed international journals and conference proceedings. He has given tutorial on a number of database topics, such as active, real-time, distributed, object-oriented, and heterogeneous databases in North America, Europe, and Asia. He is listed in Who's Who Among South Asian Americans and Who's Who Among America's Teachers.

Prior to joining UTA, he was with the University of Florida, Gainesville. Prior to that, he worked as a Computer Scientist at the Computer Corporation of America (CCA) and as a Member, Technical Staff at Xerox Advanced Information Technology, Cambridge, MA. 

Sharma Chakrvarthy received the B.E. degree in Electrical Engineering from the Indian Institute of Science, Bangalore and M.Tech from IIT Bombay, India. He worked at TIFR (Tata Institute of Fundamental Research), Bombay, India for a few years. He received M.S. and Ph.D degrees from the University of Maryland in College park in 1981 and 1985, respectively.

Professional Preparation

    • 1973 B.E. in Electrical EngineeringIndian Institute of Science, India
    • 1981 M.S. in Computer ScienceUniversity of Maryland, College Park
    • 1985 Ph.D. in Computer ScienceUniversity of Maryland, College Park
    • 1970 Bachelor of Science in Physics, Chemistry, Mathematics (None),  Bangalore University
    • 1975 M.Tech. in Controls, Communications an Computer ScienceIIT Bombay, India

Appointments

    • Jan 2000 to Jan 2013 Professor
      University of Texas at Arlington
    • Jan 1989 to Jan 1999 Assoc Prof
      University of Florida, Gainesville
    • Jan 1988 to Jan 1989 Member, Technical Staff
      Xerox, Cambridge, MA.
    • Jan 1985 to Jan 1988 Computer Scientist
      CoomputerCCA or Corporation of America, Cambridge, MA
    • Jan 1975 to Jan 1988 Scientific Officer
      TIFR (Tata Institute of Fundamental research, India)

Research and Expertise

  • research in information management
    Dr.Chakravarthy pursues research leading to the development of enabling technologies for Database and Information Systems for supporting better information usage and management. Specifically interested in: social network analysis, ranking issues in web data repositories, information integration, stream/sensor data processing, complex event processing, mining/knowledge discovery (conventional, graph, and text), Map/Reduce, web/cyber technologies, data warehouses, and information privacy and security. Grid computing and the use of parallel processing techniques are also of interest. See Synergistic activities and presentation and projects for more details.

Publications

      Conference Paper 2010
      • A. Venkatachalam, S. Chakravarthy, and A. Telang, “A Graph-Based Approach for Multi-Folder Email Classification”, in Proc. Of ICDM (International Conference on data Mining), Sydney, Australia, 2010, pp. 78-87.
        {Conference Paper }
      2010
      • Hemanth Meka, Sanjay Kumar Madria, Mohan Kumar, Mark Linderman, Sharma Chakravarthy: Efficient Simulation Architecture for Routing and Replication in Mobile Peer to Peer Network of UAVs. Mobile Data Management 2010: 281-283
        {Conference Paper }
      2010
      • Yuanzhe Cai, Miao Zhang, Chris H. Q. Ding, Sharma Chakravarthy, “Closed form solution of similarity algorithms”, SIGIR 2010: 709-710 (poster paper)
        {Conference Paper }

      Journal Article 2010
      • S. Chakravarthy and R. Adaikkalavan, “Reconciliation of Consumption Modes and Windows for Seamless Even Stream Processing”, Position paper at the Prestigious Dagstuhl workshop, May 2010
        {Journal Article }
      2010
      • A. Cuzzocrea, S. Chakravarthy, “Event-based Compression and Mining of Data Streams", DKE journal 69(7):678-708, 2010.
        {Journal Article }

      Conference Paper 2009
      • S. C. Pradhan and A. Telang. "Modeling Relational Data as Graphs for Mining," presented at COMAD, Mysore, India, 2009.
        {Conference Paper }
      2009
      • R. Adaikkalavan. "When to Trigger Active Rules?," presented at COMAD, Mysore, India, 2009.
        {Conference Paper }
      2009
      • S. C. Telang and C. Li. "Semantics-Guided Query Completion for Multi-domain Information Integration," presented at ER, Gramado, Brazil, 2009.
        {Conference Paper }
      2009
      • S. Padmanabhan and S. Chakravarthy. "HDB-Subdue: A Scalable Approach To Graph Mining," presented at Dawak, 2009.
        {Conference Paper }

      Journal Article 2009
      • Cuzzocrea, S. Chakavarthy. "Event-based Compression and Mining of Data Streams." DKE Journal (2009).
        {Journal Article }
      2009
      • Chakravarthy, S. and R. Adaikkalavan. "Provenance and Impact of Complex Event Processing (CEP): A Retrospective View." Information Technology, A scientific journal (2009).
        {Journal Article }

      Book Chapter 2009
      • Jiang, R. Adaikkalavan and S. Chakravarthy. "Event/Stream Processing for Advanced Applications." Book Chapter in Intelligent Techniques for Warehousing and Mining Sensor Network Data. IGI Publications, 2009.
        {Book Chapter }

      Book 2009
      • Chakravarthy, S. and Q. Jiang. Stream Data Processing: A Quality of Service Perspective. Springer, 2009.
        {Book }

      Conference Paper 2008
      • S. C. Cuzzocrea. "Event-Based Compression and Mining of Data Streams," presented at KES, 2008.
        {Conference Paper }
      2008
      • S. C. Adaikkalavan. "Events must be completed in event processing!," presented at SAC, 2008.
        {Conference Paper }
      2008
      • B. Kendai and S. Chakravarthy. "Runtime Optimization of Continuous Queries," presented at COMAD, 2008.
        {Conference Paper }
      2008
      • S. C. Telang and Y. Huang. "Information Integration Across Heterogeneous Sources: Where Do We Stand and How to Proceed?," presented at COMAD, 2008.
        {Conference Paper }
      2008
      • B. Kendai and S. Chakravarthy. "Load Shedding in MavStream: Analysis, Implementation, and Evaluation," presented at BNCOD, Cardiff, UK, 2008.
        {Conference Paper }
      2008
      • S. C. Telang. "Querying for Information Integration: How to go from an Imprecise Intent to a Precise Query?," presented at COMAD, 2008.
        {Conference Paper }
      2008
      • S. Chakravarthy and R. Adaikkalavan. "Event and Streams: Harnessing and Unleashing Their Synergy," presented at International Conference on Distributed Event-Based Systems (DEBS), Rome, July 2008.
        {Conference Paper }

      Conference Paper 2007
      • S. Chakravarthy and R. Adaikkalavan. "Ubiquitous Nature of Event-Driven Approaches: A Retrospective View," presented at Dagstuhl Workshop, May 2007.
        {Conference Paper }
      2007
      • R. Adaikkalavan and S. Chakravarthy. "Event Specification and Processing for Advanced Applications: Generalization and Formalization," presented at DEXA, Regensburg, Germany, 2007.
        {Conference Paper }
      2007
      • R. A. Jiang and S. Chakravarthy. "MavEStream: Synergistic Integration of Stream and Event Processing," presented at ICDT (2nd International Conference on Digital Communications), July 2007.
        {Conference Paper }
      2007
      • R. M. Telang and S. Chakravarthy. "Ranking Issues for Information Integration," presented at DBrank Workshop (associated with ICDE), Turkey, 2007.
        {Conference Paper }

      Journal Article 2007
      • Savla, S. and S. Chakravarthy. "A single Pass Algorithm for Discovering Significant Intervals in Time-Series Data." International Journal of Data Warehousing and Mining 3.3 (2007): 28-44.
        {Journal Article }
      2007
      • Adaikkalavan, R. and S. Chakravarthy. "Active Authorization Rules for Enforcing Role-Based Access Control and its Extensions." International Journal of Computer Systems Science and Engineering (2007).
        {Journal Article }

      Conference Paper 2006
      • M. Aery and S. Chakravarthy. "InfoSift: Adapting Graph Mining Techniques for Text Classification," presented at 18th International FLAIRS Conference, FL, May 16, 2006.
        {Conference Paper }
      2006
      • R. D. Chakravarthy, S. Varkala, and R. Adaikkalavan. "Situation Monitoring in Java: A Seamless and Dynamic Approach," presented at Databases and Information Systems V, IOS Press, 2006.
        {Conference Paper }
      2006
      • R. A. Garg and S. Chakravarthy. "Extensions to Stream Processing Architecture for Supporting Event Processing," presented at DEXA, 2006.
        {Conference Paper }
      2006
      • S. C. H. Chakravarthy. "Automating Change Detection and Notification of Web Pages," presented at DEXA Workshops, 2006.
        {Conference Paper }
      2006
      • S. C. Adaikkalavan. "How to Use Events and Rules for Supporting Role-Based Security?," presented at DEXA Workshops, 2006.
        {Conference Paper }
      2006
      • R. Adaikklavan and S. Chakravarthy. "Discovery Based Role Activation in RBAC," presented at IEEE IPCCC Workshop on Information Assurance, Phoenix, AZ, April 2006.
        {Conference Paper }
      2006
      • S. C. Vatsavai and M. Mohania. "Access Control Inference and Feedback for Policy Managers: A Fine-Grained Analysis," presented at POLICY, 2006.
        {Conference Paper }
      2006
      • A. Gilani, B. K. Sonune, and S. Chakravarthy. "The anatomy of a stream processing system," presented at BNCOD, Belfast, 2006.
        {Conference Paper }
      2006
      • S. Chakravarthy and V. Pajjuri. "Sheduling Strategies and Their Evaluation in a Data Stream Management System," presented at BNCOD, Belfast, 2006.
        {Conference Paper }
      2006
      • S. P. Balachandran and S. Chakravarthy. "Enhanced DB Subdue: supporting Subtle Aspects of Graph Mining Using a Relational Approach," presented at PAKDD, Singapore, April 2006.
        {Conference Paper }
      2006
      • D. B. Srinivasan and S. Chakravarthy. "Discovery of Interesting episodes in Sequence Data," presented at 21st ACM Symposium on Applied Computing, Data Mining Track, France, 2006.
        {Conference Paper }
      2006
      • Q. Jiang and S. Chakravarthy. "Anatomy of a Data Stream Management System," presented at ADBIS, Tessaloniki, 2006.
        {Conference Paper }
      2006
      • S. Savla and S. Chakravarthy. "A Single Pass Algorithm for Detecting Significant Intervals in Time-Series Data," presented at ADMKD Workshop, Thessaloniki, 2006.
        {Conference Paper }
      2006
      • S. Shreshta and S. Chakravarthy. "SQL-Based Approach to Significant Interval Discovery in Time-Series Data," presented at ADMKD, Thessaloniki, 2006.
        {Conference Paper }
      2006
      • S. Chakravarthy and S. Varkala. "Dynamic Programming Environments for Active Rules," presented at Baltic DB & IS Conference, Vilnius, Lithuania, July 2006.
        {Conference Paper }

      Journal Article 2006
      • Kona, H. and S. Chakravarthy. "An SQL-based Approach to Incremental Association Rule Mining." Foundations of Computing and Decision Sciences Journal, Special Issue (2006).
        {Journal Article }
      2006
      • Srinivasan, A. and S. Chakravarthy. "Discovery of Significant Intervals in Time-Series Data." Foundations of Computing and Decision Sciences Journal, Special Issue (2006).
        {Journal Article }
      2006
      • Sanka, S. Chamakura and S. Chakravarthy. "A Dataflow Approach to Efficient Change Detection of HTML/XML Documents in WebVigiL." Computer Networks 50 (2006): 1547-1563.
        {Journal Article }
      2006
      • Adaikkalavan, R. and Sharma Chakravarthy. "SnoopIB: Interval-Based Event Specification and Detection for Active Databases." Knowlege and Data Engineering (DKE) 59 (2006): 139-165.
        {Journal Article }

      Conference Paper 2005
      • R. Adaikkalavan and S. Chakravarthy. "Formalization and Detection of Events Using Interval-Based Semantics," presented at 11th International Conference on Management of Data (COMAD), January 2005.
        {Conference Paper }
      2005
      • M. Aery and S. Chakravarthy. "eMailSift:Email Classification Based on Structure and Content," presented at ICDM (International Conference on Data Mining), Houston, November 2005.
        {Conference Paper }
      2005
      • S. S. Srinivasan and S. Chakravarthy. "Discovery of Significant Intervals in Sequential Data," presented at 1st ADBIS Workshop on Data Mining and Knowledge Discovery, Tallinn, Estonia, September 2005.
        {Conference Paper }
      2005
      • S. C. Kona and A. Arora. "SQL-Based Approach to Incremental Association Rule Mining," presented at 1st ADBIS Workshop on Data Mining and Knowledge Discovery, Tallinn, Estonia, September 2005.
        {Conference Paper }
      2005
      • R. V. Lotlikar, M. Mohania, and S. Chakravarthy. "Policy schedule advisor for Performance Management," presented at IEEE International Conference on Autonomic Computing (ICAC), Stockholm, Sweden, June 2005.
        {Conference Paper }
      2005
      • S. C. Lotlikar, R. Vatsavai, and M. Mohania. "Analyzing Plicy Dependencies Using Historical Information," presented at IEEE Workshop on Policy for Distributed Systems and Networks, Sweden, June 2005.
        {Conference Paper }
      2005
      • A. S. van Chamakura, S. Chakravarthy, and A. Arora. "Monitoring Multiple Web Pages and Presentation of XML Pages," presented at XSDM (XML schema and data management) Workshop in conjunction with The 21st IEEE International Conference on Data Engineering (ICDE), Tokyo, Japan, April 8, 2005.
        {Conference Paper }
      2005
      • R. Adaikkalavan and S. Chakravarthy. "Active Authorization Rules for Enforcing Role-Based Access Control and its Extensions," presented at International Workshop on Privacy Data Management, in conjunction with The 21st IEEE International Conference on Data Engineering (ICDE), Tokyo, Japan, April 8, 2005.
        {Conference Paper }
      2005
      • R. A. Jiang and S. Chakravarthy. "NFM: an Inter-domain Network Fault Management System," presented at 21st IEEE International Conference on Data Engineering (ICDE: Industrial), April 2005.
        {Conference Paper }
      2005
      • R. Adaikkalavan and S. Chakravarthy. "Smartgate: A Smart Push-Pull Approach to Support Role-Based Security in Web Gateways," presented at 20th ACM Symposium on Applied Computing (SAC: WTA), March 2005.
        {Conference Paper }
      2005
      • R. A. Alkhalifa and S. Chakravarthy. "InfoFilter: A System for Expressive Pattern Specification and Detection Over Text Streams," presented at 20th ACM Symposium on Applied Computing (SAC: IAR), March 2005.
        {Conference Paper }

      Journal Article 2005
      • Jacob, Alpa Sachde and Sharma Chakravarthy. "CX-Diff: a change detection algorithm for XML content and change visualization for WebVigiL." DKE (Data and Knowledge Engineering) 52.2 (2005): 209-230.
        {Journal Article }

      Conference Paper 2004
      • S. Chakravarthy and N. Vontella. "A Publish/Subscribe Based Architecture of an Alert Server to Support Prioritized and Persistent Alerts," presented at 1st International Conference on Distributed Computing & Internet Technology (ICDCIT), 2004.
        {Conference Paper }
      2004
      • A. Kumar, J. J. Eppili, and S. C. Sachde. "Expressive Profile Specification and its Semantics for a web monitoring system," presented at 23rd International Conference on Conceptual Modeling (ER2004), Shanghai, China, 2004.
        {Conference Paper }
      2004
      • R. Adaikkalavan and S. Chakravarthy. "Formalization and Detection of Events Over a Sliding Window in Active Databases Using Interval-Based Semantics (ADBIS)," presented at ADBIS, Budapest, Hungary, 2004.
        {Conference Paper }
      2004
      • Q. Jiang and S. Chakravarthy. "Sheduling Strategies for Processing Continuous Queries Over Streams," presented at BNCOD, Edinburgh, July 2004.
        {Conference Paper }
      2004
      • M. Aery and S. Chakravarthy. "eMailSift: Mining-based Approaches to Email Classification," presented at SIGIR, July 2004.
        {Conference Paper }
      2004
      • S. C. Adaikkalavan, R. Liuzzi, and L. Wong. "Information Security: Using a Novel Event-Based Approach," presented at International Conference on Information and Knowledge Engineering (IKE), June 2004.
        {Conference Paper }
      2004
      • S. C. Sanka and S. Chakravarthy. "A Dataflow Approach to Efficient Detection of Changes to HTML/XML Documents in WebVigiL," presented at WebDynamics Workshop (associated with WWW 2004), New York, May 2004.
        {Conference Paper }
      2004
      • A. Srinivasan and S. Chakravarthy. "Discovery of Interesting Episodes in Sequence Data," presented at PAKDD Conference, May 2004.
        {Conference Paper }
      2004
      • R. B. Chakravarthy and R. Balachandran. "DB-Subdue: Database Approach to Graph Mining," presented at PAKDD Conference, Sydney, May 2004.
        {Conference Paper }
      2004
      • A. S. Chakravarthy, J. Jacob, and N. Pandragi. "A Learning-Based Approach to Fetching Pages in WebVigiL," presented at 19th ACM Symposium on Applied Computing, March 2004.
        {Conference Paper }
      2004
      • Q. Jiang and S. Chakravarthy. "Data stream management systems for Mavhome," presented at 19th ACM Symposium on Applied Computing, March 2004.
        {Conference Paper }

      Book Chapter 2004
      • Jacob, Anoop Sanka, Naveen Pandrangi, and Sharma Chakravarthy. "WebVigiL: An approach to Just-In-Time Information Propagation In Large Network-Centric Environments." Web Dynamics. Ed. mark Levene, Alexandra Poulovassilis. Springer, Heidelberg, 2004. 301-319.
        {Book Chapter }

      Conference Paper 2003
      • S. C. Engstrom and B. Lings. "Maintenance Policy Selection in Heterogeneous Data Warehouse Environments: A Heuristics-based Approach," presented at DOLAP, New Orleans, November 2003.
        {Conference Paper }
      2003
      • Q. Jiang and S. Chakravarthy. "Queing analysis of relational operators for continuous data streams," presented at 12th ACM CIKM, November 2003.
        {Conference Paper }
      2003
      • A. S. Jacob and S. Chakravarthy. "CX-DIFF: A Change Detection Algorithm for XML Content and Change Presentation Issues for WebVigiL," presented at ER Workshops, October 2003.
        {Conference Paper }
      2003
      • P. Mishra and S. Chakravarthy. "Performance Evaluation of SQL-OR Variants for Association Rule Mining," presented at DaWak (Data Warehousing and Knowledge Discovery, Prague, September 2003.
        {Conference Paper }
      2003
      • R. Adaikkalavan and S. Chakravarthy. "Interval-Based Event Specification and Detection for Actie Databases," presented at ADIBS Conference, Dresden, September 2003.
        {Conference Paper }
      2003
      • J. J. Pandragi and S. Chakravarthy. "WebVigiL: User Profile-Based Change Detection for HTML/MXL Documents," presented at BNCOD, Sheffield, UK, July 2003.
        {Conference Paper }
      2003
      • P. Mishra and S. Chakravarthy. "Performance Evaluation and Analysis of K-way join variants for Association Rule Mining," presented at BNCOD, Sheffield, UK, July 2003.
        {Conference Paper }
      2003
      • S. Chakravarthy and H. Zhang. "Visualization of association Rules over RDBMSs," presented at ACM SAC, Melbourne, FL, March 2003.
        {Conference Paper }
      2003
      • S. C. Engstrom and B. Lings. "A Heuristic or Refresh Policy Selection in Heterogeneous Environments," presented at ICDE, Bangalore, India, March 2003.
        {Conference Paper }

      Journal Article 2003
      • Chakravarthy, Y. Alp Aslandogan, Leonidas Fegaras Elmasri, and Jung Hwan Oh. "Database Research at UT Arlington." SIGMOD Record 32.1 (2003): 73-80.
        {Journal Article }

      Conference Paper 2002
      • S. C. Enstrom and B. Lings. "Implementation and Comparative Evaluation of Maintenance Policies in a Data Warehouse Environment," presented at British National Database Conference (BNCOD), Sheffield, UK, July 2002.
        {Conference Paper }
      2002
      • G. G. Chakravarthy, R. Liuzi, and L. Wong. "Agent-Based Middleware for Supporting Active Capability in RDBMSs," presented at International Conference on Artificial Intelligence (IC-AI), Monte Carlo Resort, Las Vegas, NV, June 2002.
        {Conference Paper }
      2002
      • S. Chakravarthy and S. Yang. "Architecture and Implementation of an Interactive Tool for the Visualization and Debugging of Active Capability," presented at Visual Database Conference, Brisbane, Australia, May 2002.
        {Conference Paper }
      2002
      • J. J. Chakravarthy, N. Pandragi, and A. Sanka. "WebVigil: An Approach to Just-In-Time (JIT) Information Propagation in Large Network-Centric Environments," presented at Web Dynamics Workshop, Hawaii, May 2002.
        {Conference Paper }
      2002
      • S. C. Engstrom and B. Lings. "A Systematic Approach to Selecting Maintenance Policies in a Data Warehouse Environment," presented at Extended Database Technology (EDBT) Conference, Prague, March 2002.
        {Conference Paper }
      2002
      • S. C. Dudgikar, R. Liuzi, and L. Wong. "A Layered Optimizer for Mining Association Rules over Relational Database Management Systems," presented at International Conference on Artificial Intelligence (IC-AI), Monte Carlo Resort, Las Vegas, NV, June 2002.
        {Conference Paper }
      2002
      • C. G. Kumar and S. Chakravarthy. "A Multi-level Scheme for Web Security," presented at High Performance Computing Asia (HPCAsia), Bangalore, India, December 2002.
        {Conference Paper }

      Conference Paper 2001
      • R. L. Chakravarthy and L. Wong. "Intelligent Agents for the Effective Support of Push Technology," presented at International Conference on Artificial Intelligence (IC-AI), Monte Carlo Resort, Las Vegas, NV, June 2001.
        {Conference Paper }
      2001
      • S. Chakravarthy and H. Liao. "Asynchronous Monitoring of Events for Cooperative Distributed Environments," presented at CODAS, Beijing, China, April 2001.
        {Conference Paper }

      Conference Proceeding 2001
      • S. Chakravarthy and D. Cook. "2001 NSF Information and Data Management Workshop Proceedings," (2001).
        {Conference Proceeding }

      Conference Paper 2000
      • S. Thomas and S. Chakravarthy. "Incremental Mining of Constrained Associations," presented at High Performance Computing (HiPC), Bangalore, India, December 2000.
        {Conference Paper }
      2000
      • S. C. Engstrom and B. Lings. "A User-centric View of Data Warehouse Issues," presented at BNCOD International Conference, Exeter, July 2000.
        {Conference Paper }
      2000
      • R. L. Chakravarthy and L. Wong. "A User-Centric Approach to Information Managment," presented at International Conference on Artificial Intelligence (IC-AI), Las Vegas, June 2000.
        {Conference Paper }

      Conference Proceeding 2000
      • M. B. Abbadi, S. Chakravarthy, et al. "Proc. of the 26th International Conf. On Very Large Databases," (2000).
        {Conference Proceeding }

      Journal Article 2000
      • Hong, S. C. & Johnson, T. (2000). Incorporating Load Factor into the Scheduling of Soft Real-Time Transactions for Main Memory Databases. Information Systems, 25(4), 309-322.
        {Journal Article }

      Conference Paper 1999
      • S. C. Engstrom and B. Lings. "A Rule-Based Adaptive Approach to the Design and Implementation of Data Warehouses," presented at IRMA Workshop, Pittsburgh, May 1999.
        {Conference Paper }
      1999
      • S. Thomas and S. Chakravarthy. "Performance Evaluation and Optimization of Join Queries for Association Rule Mining," presented at DaWak Workshop, Florence, Italy, 1999.
        {Conference Paper }
      1999
      • Yang, S. & Chakravarthy, S. (1999, March). Formal Semantics of Composite Events for Distributed Environments. Paper presented at Proceedings of ICDE99, Australia.
        {Conference Paper }
      1999
      • Chakravarthy, S. (1999, March). An Agent-Based Approach to Extending The native Active Capability of Relational Database Systems. Paper presented at Proceedings of ICDE99, Australia.
        {Conference Paper }

      Conference Paper 1998
      • J. Arguello and S. Chakravarthy. "Extensions to Decision Tree Algorithms for Classification and Data Mining in Large Databases," presented at XIII SBBD (Simposio Brasiliero de Banco De Dados), October 1998.
        {Conference Paper }

      Book Chapter 1998
      • Chakravarthy, S. Tufekci and R. Honnavalli. "Flexible Manufacturing Simulation: Using an Active DBMS." Cooperative Knowledge Processing for Engineering Design. Jacucci, Chapmann, and Hill Publishers, 1998.
        {Book Chapter }

      Journal Article 1998
      • Sagin, O. O. & Chakravarthy, S. (1998). Concurrent Rule Execution in Active Database Systems. Information Systems, 23(1), 39-64.
        {Journal Article }
      1998
      • Chakravarthy, D. H. & Johnson, T. (1998). Real-Time Transaction Scheduling: A Framework for Synthesizing Static and Dynamic Factors. Real Time Systems Journal, 14(1), 135-170.
        {Journal Article }

      Conference Paper 1997
      • S. K. Kim and S. Chakravarthy. "A Practical Approach to Static Rule Analysis and Execution of Rules in Active Databases," presented at Sixth International Conference of Information and Knowledge Management, Las Vegas, November 1997.
        {Conference Paper }
      1997
      • E. Malinowski and S. Chakravarthy. "Vertical Fragmentation of Objects for Distribution in Databases," presented at ER'97 Conference, Los Angeles, CA, 1997.
        {Conference Paper }
      1997
      • S. C. Berndtsson and B. Lings. "Result Sharing Among Agents Using Reactive Rules," presented at First International Workshop on Cooperative Information Agents - DAI meets Database Systems (CIA-97), Kiel, Germany, February 1997.
        {Conference Paper }
      1997
      • Berndtsson, S. C. (1997, June). Task Sharing Among Agents Using Reactive Rules. Paper presented at Proc. of the Second IFCIS Conference on Cooperative Information Systems (CoopIS '97),.
        {Conference Paper }

      Journal Article 1997
      • Berndtsson, S. Chakravarthy and B. Lings. "Extending Database Support for Coordinating Among Agents." International Journal of Cooperative Information Systems 6.3 & 4 (1997): 215-339.
        {Journal Article }

      Book Chapter 1997
      • Anwar, S. Chakravarthy and M. Viveros. "An Extensible Approach to Realizing Advanced Transaction Models." Advanced Transaction Models and Architectures. Ed. Sushil Jajodia and Larry Kerschberg. , 1997.
        {Book Chapter }

      Conference Paper 1996
      • S. C. Berndtsson and B. Lings. "Cooperative Problem Solving: A New Direction for Active Databases," presented at International Symposium on Cooperative Database Systmes for Advanced Applications, Kyoto, Japan, December 1996.
        {Conference Paper }
      1996
      • S. C. Datta, S. Thomas, and I. Viguier. "An Architecture and two New Research Problems in ARCS Databases," presented at Workshop on Databases: Active and Real-Time (Concept meets Practice) (DART'96), Bethesda, Maryland, 1996.
        {Conference Paper }
      1996
      • S. C. Hong and M. Kim. "Incorporating load factor into the sheduling of soft real-time transactions for main memory databases," presented at Third International Workshop for main memory databases (RTCSA '96), Seoul, Korea, November 1996.
        {Conference Paper }
      1996
      • S. C. Anwar and M. Viveros. "An Extensible Approach To Realizing Advanced Transaction Models," presented at International Workshop on Advanced Transaction Models and Architecture (ATMA), Goa, India, September 1996.
        {Conference Paper }
      1996
      • J. Arguello and S. Chakravarthy. "Distributed Tree Induction for Knowledge Discovery in Very Large Distributed Databases," presented at Workshop on Research Issues on Data Mining and Knowledge Discovery (in cooperation with ACM-SIGMOD '96), June 1996.
        {Conference Paper }
      1996
      • S. C. Hong and T. Johnson. "Locking Based Concurrency Control for Integrated Real-Time Database Systems," presented at First Workshop on Real-Time Databases: Issues and Applications (RTDB '96), Newport Beach, CA, March 7, 1996.
        {Conference Paper }

      Book Chapter 1996
      • Dayal, A. Buchmann and S. Chakravarthy. "HiPAC -- An Active, Object-Oriented Database System." Active Database Systems -- Triggers and Rules for Advanced Database Processing. Ed. U. Dayal and J. Widom. Morgan Kaufmann Publications, 1996. 177-206.
        {Book Chapter }

      Conference Paper 1995
      • E. A. Arctur, M. C. Chakravarthy, K. S. Chung, and J. Alexander. "Implementation of a Rule-Based Framwork for Managing Updtes in an Object-Oriented VPF Database," presented at GIS/LIS Conference, Nashville, TN, November 1995.
        {Conference Paper }
      1995
      • Z. T. Chakravarthy and J. Zhou. "A Visualization and Explanation Tool for Debugging ECA Rules in Active Databases," presented at 2nd International Workshop on Rules in Database Systems (RIDS 95), Athens, Greece, October 1995.
        {Conference Paper }
      1995
      • E. A. Arctur, S. C. Alexander, M. C. Chung, and K. Shaw. "Comparison of Benchmarks for Import of vector Product Format (VPF) Geographic Data from Object-Oriented and Relational Database Files," presented at Fourth Int'l symposium on Advances in Spatial Databases (SSD '95), Portland, Maine, August 1995.
        {Conference Paper }
      1995
      • S. Chakravarthy, v, Z. T. Krishnaprasad, and R. H. Badani. "ECA Rule Integration into an OODBMS: Architecture and Implementation," presented at 11th International Conference on Data Engineering, Taipei, Taiwan, March 1995.
        {Conference Paper }

      Journal Article 1995
      • Chakravarthy, S. "Early Active Databases: A Capsule Summary." IEEE Trans. on Knowledge and Data Engineering 7.6 (1995): 1008-1011.
        {Journal Article }
      1995
      • Chakravarthy, S. "Architecture and Monitoring Techniques for Active Databases: An Evaluation." Data and Knowledge Engineering 16 (1995): 1-26.
        {Journal Article }

      Conference Paper 1994
      • V. K. Chakravarthy, E. Anwar, and S. K. Kim. "Composite Events for Active Databases: Semantics, Contexts, and Detection," presented at 20th International Conference on Very Large Databases, Santiago, Chile, September 1994.
        {Conference Paper }
      1994
      • F. A. L. Maria, D. D. Dankel, S. T. Chakravarthy, and R. Marcus. "XNEOR Improves the Quality and Cost of Health Care in Children with Medulloblastoma," presented at Eighth Annual Symposium on Computer Applications in Medical Care, Washington D.C., November 1994.
        {Conference Paper }
      1994
      • F. L. Maria, D. D. I. Chakravarthy, and S. Tufekci. "XNEO: A Diagnostic Expert System for Pediatric Neuro-Oncology," presented at 4th International Conference on Management of Technology, Miami, February 1994.
        {Conference Paper }

      Journal Article 1994
      • Chakravarthy, E. Anwar, L. Mauglis, and D. Mishra. "Design of Sentinel: An Object-Oriented DBMS with Event-Based Rules." Information and Software Technology 36.9 (1994): 555-568.
        {Journal Article }
      1994
      • Chakravarthy, S. and S K. Kim. "Resolution of Time Concepts in Temporal Databases." Information Sciences 80.1-2 (1994): 91-125.
        {Journal Article }
      1994
      • Kim, S. K. and S. Chakravarthy. "Temporal Databases with Two-Dimensional Time: Its Interpretation and Implementation." Information Sciences 80.1-2 (1994): 43-89.
        {Journal Article }
      1994
      • Chakravarthy, W. K. Whang and S. B. Navathe. "Logic-Based Spproach to Query Processing in Federated Databases." Information Sciences 79.1-2 (1994): 1-28.
        {Journal Article }
      1994
      • Chakravarthy, J. Muthuraj, R. Varadarajan, and S. B. Navathe. "An Objective Function for Vertically Partitioning Relations in Distributed Databases and its Analysis." Distributed and Parallel Databases Journal 2.3 (1994): 183-207.
        {Journal Article }
      1994
      • Chakravarthy, S. & Mishra, D. (1994, October). Snoop: An Expressive Event Specification Language for Active Databases. Data and Knowledge Engineering Journal, 14(10), 1-26.
        {Journal Article }

      Conference Proceeding 1994
      • "Advances in Data Management '94," (1994).
        {Conference Proceeding }
      1994
      • "Proceedings of the Fourth International Workshop on Research Issues in Data Engineering Active Database Systems (RIDE-ADS 94)," (1994).
        {Conference Proceeding }

      Conference Paper 1993
      • S. C. Muthuraj, R. Varadarajan, and S. B. Navathe. "A Formal Approach to the Vertical Partitioning Problem in Distributed Database Design," presented at Parallel and Distributed Information Systems (PDIS-2), San Diego, January 1993.
        {Conference Paper }
      1993
      • S. K. Kim and S. Chakravarthy. "Modeling Time: Adequacy of Three Distinct Time Concepts for Temporal Databases," presented at 12th International Conference on Entity-Relationship Approach, Dallas, December 1993.
        {Conference Paper }
      1993
      • S. Chakravarthy and S. K. Kim. "Semantics of Time-varying Information and Resolution of Time Concepts in Temporal Databases," presented at International Workshop on Infrastructure for Temporal Databases, Texas, June 1993.
        {Conference Paper }
      1993
      • T. J. Hong and S. Chakravarthy. "Real-Time Transaction Scheduling: A Cost Conscious Approach," presented at Special Interest Group on Management of Data Proceedings, Washington D.C., May 1993.
        {Conference Paper }
      1993
      • B. L. M. Chakravarthy, V, Z. T. Krishnaprasad, and F. L. Lambay. "A Federated Multi-Media DBMS for Medical Research: Architecture and Functionality," presented at In the Next Generation Information Technology Conference, Haifa, Israel, June 1993.
        {Conference Paper }
      1993
      • Anwar, L. M. & Chakravarthy, S. (1993, May). A New Perspective on Rule Support for Object-Oriented Databases. Paper presented at SIGMOD Proceedings, Washington, D.C.
        {Conference Paper }

      Journal Article 1993
      • Whang, S. Chakravarthy and S. B. Navathe. "Relational Schema Integration: Dealing with Inter Relational Correspondences and Querying over Component Schemas." Computing Systems, Special Issue on Heterogeneous Database Systems 6 (1993): 319-352.
        {Journal Article }
      1993
      • Chakravarthy, K. Karlapalem, S. B. Navathe, and A. Tanaka. "Database Supported Cooperative Problem Solving." International Journal of Intelligent and Cooperative Information Systems 2.3 (1993): 249-287.
        {Journal Article }

      Journal Article 1992
      • Navathe, A. Tanaka and S. Chakravarthy. "Active Database Modeling and Design Tools: Issues, Approach, and Architecture." IEEE Data Engineering Bulletin 15.1-4 (1992): 6-9.
        {Journal Article }

      Conference Paper 1991
      • S. B. N. Tanaka, S. Chakravarthy, and K. Karlapalem. "ER-R: An Enhanced ER Model with Situation-Action Rules to Capture Application Semantics," presented at 10th International Conference on the Entity Relationship Approach, San Mateo, October 1991.
        {Conference Paper }
      1991
      • S. B. N. Chakravarthy and A. T. Karlapalem. "Meeting the Cooperative Problem Solving Challenge: A Database-Centered Approach," presented at Cooperating Knowledge Based Systems, 1991.
        {Conference Paper }
      1991
      • S. B. N. Whang and S. Chakravarthy. "Logic-Based Approach to Realizing a Federated Informaton System," presented at First International Workshop on Interoperability in Multi Database Systems, Kyoto, Japan, 1991.
        {Conference Paper }
      1991
      • S. Chakravarthy. "Divide and Conquer: A Basis for Augmenting a Conventional Query Optimizer with Multiple Query Processing Capabilities," presented at 7th International Conference on Data Engineering, Kobe, Japan, 1991.
        {Conference Paper }

      Book Chapter 1991
      • Chakravarthy, S. "Active Database Management Systems: Requirements, State-Of-The-Art, and Evaluation." Entity-Relationship Approach: The Core of Conceptual Modeling. Ed. H. Kangassalo. Elsevier Science Publishers, North-Holland, 1991. 461-473.
        {Book Chapter }

      Conference Paper 1990
      • S. Chakravarthy and I. V. Ramakrishnan. "Use of Mesh Connected Processors for Realizing Fault Tolerant Relational Database Operations," presented at PARBASE-90: International Conference on Databases, Parallel Architectures, and their Applications, Miami Beach, FL, March 1990.
        {Conference Paper }
      1990
      • S. Chakravarthy and S. Nesson. "Making an Object-Oriented DBMS Active: Design, Implementation, and Evaluation of Prototype," presented at Proceedings of International Conference on Extended Database Technology (EDBT), Venice, Italy, March 1990.
        {Conference Paper }

      Journal Article 1990
      • Chakravarthy, J. Grand and J. Minker. "Logic-Based Approach to Semantic Query Optimization." ACM Transactions on Database Systems 15.2 (1990): 162-207.
        {Journal Article }

      Conference Paper 1989
      • S. C. Rosenthal, B. Blaustein, and J. A. Blakeley. "Situation Monitoring in Active Databases," presented at 15th International Conference on Very Large Databases (VLDB), Amsterdam, The Netherlands, August 1989.
        {Conference Paper }

      Book Chapter 1989
      • Dayal, F. Manola, S. Chakravarthy Buchmann, and S. Heiler. "Simplifying Complex Objects: the PROBE Approach to Modeling and Querying Them." Readings in Object-Oriented Databases. Ed. S. Zdonik and D. Maier. San Mateo, California: Morgan Kaufman Publishers, Inc., 1989. 390-399.
        {Book Chapter }

      Conference Paper 1988
      • A. Rosenthal and S. Chakravarthy. "Anatomy of a Modular Multiple Query Optimizer," presented at 14th International Conference on Very Large Databases (VLDB), IEEE, Long Beach, CA, August 1988.
        {Conference Paper }
      1988
      • J. G. Chakravarthy and J. Minker. "Foundations of Semantic Query Optimization for Deductive Databases," presented at Foundations of Deductive Databases and Logic Programming, 1988.
        {Conference Paper }

      Conference Paper 1987
      • F. M. Dayal, S. C. Buchmann, and S. Heiler. "Simplifying Complex Objects: The PROBE Approach to Modeling and Querying Them," presented at German Database Conference, Darmstadt, April 1987.
        {Conference Paper }

      Conference Paper 1986
      • S. Chakravarthy and J. Minker. "Multiple Query Processing in Deductive Databases using Query Graphs," presented at 12th International Conference on Very Large Databases (VLDB), Kyoto, Japan, August 1986.
        {Conference Paper }
      1986
      • J. G. Chakravarthy and J. Minker. "Semantic Query Optimization: Additional Constraints and Control Strategies," presented at First Int'l Conference on Expert Database Systems, Charleston, South Carolina, April 1986.
        {Conference Paper }

      Conference Paper 1984
      • D. H. F. Chakravarthy and J. Minker. "Semantic Query Optimization in Expert Systems and Database Systems," presented at First International Workshop on Expert Database Systems, South Carolina, 1984.
        {Conference Paper }
      1984
      • P. J. V. Ramakrishnan and S. Chakravarthy. "Synthesis of Fault-Tolerant Parallel Matrix Computations," presented at Eighteenth Annual Conference on Information Sciences and Systems, Princeton, March 1984.
        {Conference Paper }

      Conference Paper 1983
      • C. A. Minker, S. C. Cao, S. K. Csoeke-Poeckh, R. P. Kohli, and D. Wang. "Parallel Problem Solving on ZMOB," presented at Trends and Applications, IEEE Computer Society Press, 1983.
        {Conference Paper }

      Conference Paper 1982
      • J. M. Chakravarthy and D. Tran. "Interfacing Predicate Logic Languages and Relational Databases," presented at First International Logic Programming Conference, Marseilles, 1982.
        {Conference Paper }
      1982
      • S. K. Chakravarthy, J. M. Kohli, and D. Cao. "Logic Programming on ZMOB: A Highly Parallel Machine," presented at 1982 International Conference on Parallel Processing, 1982.
        {Conference Paper }

      Journal Article 1982
      • Chakravarthy, S. and J. Minker. "Processing multiple Queries in Database Systems." IEEE Database Engineering 5.3 (1982): 38-44.
        {Journal Article }

      Conference Paper 1978
      • S. C. Mudur and S. R. Gupta. "Environmental Independence in a Graphics Programming System," presented at International Conference on Interactive Graphics and Computer Aided Design, Italy, September 1978.
        {Conference Paper }

      Journal Article 1978
      • Shankar, P. V. and S. Chakravarthy. "A Parallel Procedure for the Detection of Dominant Points on a Digital Curve." Computer Graphics and Image Processing 8 (1978): 403-412.
        {Journal Article }
      1978
      • Shankar, S. Chakravarthy and R. Narasimham. "Computing Organizations and Shapes of 2-D Dot Patterns: A Perceptual Level Approach." Computer Graphics and Image Processing 8 (1978): 203-218.
        {Journal Article }

      Conference Paper 1977
      • S. Chakravarthy. "Conversational PAX," presented at Comp. Society of India Conference, Poona, India, 1977.
        {Conference Paper }

Presentations

    • January  2008
      Ranking in web Databases
      Developed Similarity based approach to customized ranking of results from searching web Databases. Two types of Similarity -- user and query -- were proposed and formalized. Extensive experimental analysis was performed to validate theoretical results.
    • January  2007
      InfoMosaic
      Developed an approach for transforming key word search into SQL-like queries. Improves search on the web and gives more useful results. Also, personalized ranking techniques were developed for web databases. The notions of user- and query-similarity were used for this purpose.
    • January  2005
      InfoSift, InfoSearch
      InfoSift is an email classification system using graph mining techniques. Has been successfully shown to be useful for text, email, and web page classification. Inforsearch is a powerful document search that can take complex search input (distance between words, # of occurrences to mention a few). Prototypes were developed for search on corpus, stream input search, and top-k result computation
    • January  2004
      MavStream and MavEStream
      Research and the development of the prototypes on stream and event processing resulting in the Springer book.
    • January  2002
      WebVigil, MavHome
      A System for monitoring web pages using event-based technology. Uses the "push" paradigm Vs. the widely used, but less effective "pull" paradigm. Use of sensor data for analyzing, predicting and automating environments with large of number of sensors and 24x7 data.
    • January  1985
      HiPAC
      "An active, time-constrained database management system". Specifically, Dr. Chakravarthy contributed to the research on the situation monitoring and evaluation subsystem, which efficiently manages rules of HiPAC and optimizes their evaluation.
    • January  1985
      Probe
      An object-oriented, extensible DBMS aimed at non-traditional applications was developed. Dr. Chakravarthy managed the VSDS (Verifiable Secure Distributed Systems) project as well as worked on the PV (Program Visualization) project.
    • January  1981
      PRISM
      Logic programming environment using a number of Z80 processors.

Courses

      • CSE 4331-001 DATABASE IMPLEMENTATION AND THEORY

        DBMS system implementation techniques include query optimization, transaction processing, concurrency control, buffer management, and recovery. Introduction to advanced database models, such as cloud computing, NoSQL DBMSs will be covered. Prerequisite: CSE 3330/CSE 5330, or consent of instructor.

        Fall - Regular Academic Session - 2015 Download Syllabus Contact info & Office Hours
      • CSE 3330-001 Database systems and file structures

        Database system architecture; management   and analysis of files, indexing, hashing, and B+-trees; the relational model and algebra; the  SQL database language; database programming techniques; database design using  Entity-Relationship, extended E-R, and UML modeling;  basics of normalization. Introduction to database security, query processing, and transaction management.

        Fall - Regular Academic Session - 2014 Download Syllabus Contact info & Office Hours
      • CSE 6311-001 ADVANCED COMPUTATIONAL MODELS AND ALGORITHMS
        Course Outline: This offering of the course will cover the following topics as related to databases and information technology: • Mining (graph, Association rule, and SQL-Based): Need, techniques for knowledge discovery, approaches, algorithms, and application areas • Stream and Complex Event Processing: pervasive applications, sensor data processing, differences between stream data processing and relational data processing, and its synergy with complex event processing • Cloud computing: map/reduce paradigm, solving data and computation intensive problems using the new architecture
        Spring - Regular Academic Session - 20121 Link
      • CRIM 1325-001 Object-oriented Design and Exception Handling using java
        Course Outline: The course will cover the fundamentals as part of three modules. • Module I: OO concepts, language features used for OO programming (classes, methods, inheritance, polymorphism, …) • Module II: Event-driven applications (exception handling, using event-driven programming for GUI development) • Module III: Advanced features of problem solving (recursion, generic classes, multi-threading, applets, …)
        Spring - Regular Academic Session - 20121 Link

Other Service Activities

  • Uncategorized
    • Dec  semantic and multiple query optimizations
      Dr. Chakravarthy is well known for his pioneering work on semantic and multiple query optimizations, his leadership in the area of active databases (the HiPAC project at CCA and the Sentinel project at UFL), and his work on distributed database design, re