Now showing items 17-36 of 37

    • OLAP over Imprecise Data With Domain Constraints 

      Burdick, Doug; Doan, AnHai; Ramakrishnan, Raghu; Vaithyanathan, Shivakumar (University of Wisconsin-Madison Department of Computer Sciences, 2007)
      Several recent works have focused on OLAP over imprecise data, where each fact can be a region, instead of a point, in a multi-dimensional space. They have provided a multiple-world semantics for such data, and ...
    • On the Integration of Structure Indexes and Inverted Lists 

      Kaushik, Raghav; Krishnamurthy, Rajasekar; Naughton, Jeffrey; Ramakrishnan, Raghu (University of Wisconsin-Madison Department of Computer Sciences, 2003)
      We consider the problem of how to combine structure indexes and inverted lists to answer queries over a native XML DBMS, where the queries specify both path and keyword constraints. We augment the inverted list entries to ...
    • On the Power of Magic 

      Beeri, Catriel; Ramakrishnan, Raghu (University of Wisconsin-Madison Department of Computer Sciences, 1988)
    • Optimizing Existential Datalog Queries 

      Ramakrishnan, Raghu; Beeri, Catriel; Krishnamurthy, Ravi (University of Wisconsin-Madison Department of Computer Sciences, 1988)
    • Optimizing MPF Queries: Decision Support and Probabilistic Inference 

      Bravo, Hector Corrada; Ramakrishnan, Raghu (University of Wisconsin-Madison Department of Computer Sciences, 2006)
      We identify a broad class of aggregate queries, called MPF queries, inspired by the literature on marginalizing product functions. MPF queries operate on �functional relations,� where a measure attribute is functionally ...
    • Parallelism in Logic Programs 

      Ramakrishnan, Raghu (University of Wisconsin-Madison Department of Computer Sciences, 1989)
      There is a tension between the objectives of avoiding irrelevant computation and extracting parallelism, in that a computational step used to restrict another must precede the latter. Our thesis, following [BeR87], is ...
    • Privacy Skyline: Privacy with Multidimensional Adversarial Knowledge 

      Chen, Bee-Chung; LeFevre, Kristen; Ramakrishnan, Raghu (University of Wisconsin-Madison Department of Computer Sciences, 2007)
      Privacy is an important issue in data publishing. Many organizations distribute non-aggregate personal data for research, and they must take steps to ensure that an adversary cannot predict sensitive information pertaining ...
    • Probabilistic Optimization of Top N Queries 

      Donjerkovic, Donko; Ramakrishnan, Raghu (University of Wisconsin-Madison Department of Computer Sciences, 1999)
    • Proceedings of the Workshop on Programming With Logic Databases 

      Ramakrishnan, Raghu (University of Wisconsin-Madison Department of Computer Sciences, 1993)
    • Protecting the Quality of Service of Existing Information Systems 

      Beyer, Kevin; Livny, Miron; Ramakrishnan, Raghu (University of Wisconsin-Madison Department of Computer Sciences, 1997)
    • The QUIQ Engine: A Hybrid IRDB System 

      Kabra, Navin; Ramakrishnan, Raghu; Ercegovac, Vuk (University of Wisconsin-Madison Department of Computer Sciences, 2003)
    • Rule Ordering in Bottom-Up Fixpoint Evaluation of Logic Programs 

      Ramakrishnan, Raghu; Srivastava, Divesh; Sudarshan, S (University of Wisconsin-Madison Department of Computer Sciences, 1991)
    • Scalable Integration of Data Collections on the Web 

      Ramakrishnan, Raghu; Silberschatz, Avi (University of Wisconsin-Madison Department of Computer Sciences, 1998)
    • Schema Intension Graphs: A Formal Model for the Study of Schema Equivalence 

      Miller, Renee J; Ioannidis, Yannis E; Ramakrishnan, Raghu (University of Wisconsin-Madison Department of Computer Sciences, 1994)
    • SEQ: Design and Implementation of a Sequence Database System 

      Seshadri, Praveen; Livny, Miron; Ramakrishnan, Raghu (University of Wisconsin-Madison Department of Computer Sciences, 1996)
    • SLIC: On-The-Fly Extraction and Querying of Web Data 

      McCann, Robert; DeRose, Pedro; Doan, AnHai; Ramakrishnan, Raghu (University of Wisconsin-Madison Department of Computer Sciences, 2006)
      Increasingly, Web data is displayed in pages generated according to a template (e.g., product listings at amazon.com, faculty directories, class schedules). This trend makes structured querying of such Web data a valuable ...
    • Source-Aware Entity Matching: A Compositional Approach 

      Shen, Warren; DeRose, Pedro; Vu, Long; Doan, AnHai; Ramakrishnan, Raghu (University of Wisconsin-Madison Department of Computer Sciences, 2006)
      Entity matching (a.k.a. record linkage) plays a crucial role in integrating multiple data sources, and numerous matching solutions have been developed. However, the solutions have largely exploited only information available ...
    • Space Optimization in Deductive Databases 

      Srivastava, Divesh; Sudarshan, S; Ramakrishnan, Raghu; Naughton, Jeffrey F (University of Wisconsin-Madison Department of Computer Sciences, 1991)
    • A Unified Approach to Logic Program Evaluation 

      Naughton, Jeffrey F; Ramakrishnan, Raghu (University of Wisconsin-Madison Department of Computer Sciences, 1989)
      The Prolog evaluation algorithm has become the standard for logic program evaluation, and bottom-up methods have long been considered impractical because they compute irrelevant facts. Recently, however, bottom-up evaluation ...
    • Using Constraints to Query R* -Trees 

      Goldstein, Jonathan; Ramakrishnan, Raghu; Shaft, Uri; Yu, Jie-Bing (University of Wisconsin-Madison Department of Computer Sciences, 1996)