Documentos: Recent submissions

  • Efficient evaluation of multiple queries on streaming XML data 
    Mong Li; Lee Chin; Chua Wynne; Hsu Kian-Lee; Tan (2002)
    Traditionally, XML documents are processed at where they are stored. This allows the query processor to exploit pre-computed data structures (e.g., index) to retrieve the desired data efficiently. However, this mode of ...
  • NeT & CoT: Translating Relational Schemas to XML Schemas using Semantic Constraints 
    Lee Dongwon; Mani Murali; Chiu Frank; Chu Wesley W (2002)
    Two algorithms, called NeT and CoT, to translate relational schemas to XML schemas using various semantic constraints are presented. The XML schema representation we use is a language-independent formalism named XSchema, ...
  • An Agent-Based Approach to Knowledge Management 
    Yu Bin; Singh Munindar P (2002)
    Traditional approaches to knowledge management are essentially limited to document management. However, much knowledge in organizations or communities resides in an informal social network and may be accessed only by asking ...
  • Efficient Synchronization for Mobile XML Data 
    Lam Franky; Lam Nicole; Wong Raymond (2002)
    Many handheld applications receive data from a primary database server and operate in an intermittently connected environment these days. They maintain data consistency with data sources through sychronization. In certain ...
  • Logical and Physical Support for Heterogeneous Data 
    Amer-Yahia Sihem; Fernándezfern´fernández Mary; Greer Rick; Srivastava Divesh (2002)
    Heterogeneity arises naturally in virtually all real-world data. This paper presents evolutionary extensions to a relational database system for supporting three classes of data het-erogeneity: variational, structural and ...
  • XMLTM: Efficient Transaction Management for XML Documents General Terms 
    Grabs Torsten; Klemens B ¨; Ohm; Schek Hans-J ¨ Org (2002)
    A common approach to storage and retrieval of XML documents is to store them in a database, together with materialized views on their content. The advantage over " native " XML storage managers seems to be that transactions ...
  • Techniques for Efficient Fragment Detection in Web Pages 
    Ramaswamy Lakshmish; Iyengar Arun; Liu Ling; Douglis Fred (2003)
    The existing approaches to fragment-based publishing, delivery and caching of web pages assume that the web pages are manually fragmented at their respective web sites. However manual fragmentation of web pages is expensive, ...
  • Automated Index Management for Distributed Web Search 
    Khoussainov Rinat; Kushmerick Nicholas (2003)
    Distributed heterogeneous search systems are an emerging phenomenon in Web search, in which independent topic-specific search engines provide search services, and metasearchers distribute user's queries to only the most ...
  • On the Complexity of Schema Inference from Web Pages in the Presence of Nullable Data Attributes 
    Yang Guizhen; Ramakrishnan I V; Kifer Michael (2003)
    An increasingly large number of Web pages are machine-generated by filling in templates with data stored in backend databases. These templates can be viewed as the implicit schemas of those Web pages. The ability to infer ...
  • High Dimensional Reverse Nearest Neighbor Queries 
    Singh Amit; Ferhatosmano˘ Hakan; Tosun Ali S ¸ Aman (2003)
    Reverse Nearest Neighbor (RNN) queries are of particular interest in a wide range of applications such as decision support systems, profile based marketing, data streaming, document databases, and bioinformatics. The earlier ...
  • HyperThesis: The gRNA Spell on the Curse of Bioinformatics Applications Integration 
    Bhowmick Sourav S; Vedagiri Vivek; Laud Amey (2003)
    In this paper, we describe a graphical workflow management system called HyperThesis to address the challenges of integrating bioinformatics applications. HyperThesis is an integral component of the Genomics Research Network ...
  • The Power-Method: A Comprehensive Estimation Technique for Multi-Dimensional Queries 
    Tao Yufei; Faloutsos Christos; Papadias Dimitris (2003)
    Existing estimation approaches for multi-dimensional databases often rely on the assumption that data distribution in a small region is uniform, which seldom holds in practice. Moreover, their applicability is limited to ...
  • XML Parsing: A Threat to Database Performance 
    Nicola Matthias; John Jasmi (2003)
    XML parsing is generally known to have poor performance characteristics relative to transactional database processing. Yet, its potentially fatal impact on overall database performance is being underestimated. We report ...
  • Efficient ordering for XML data 
    Fisher Damien K; Lam Franky; Shui William M; Wong Raymond K (2003)
    With the increasing popularity of XML, there arises the need for managing and querying information in this form. Several query languages, such as XQuery, have been proposed which return their results in document order. ...
  • Building XML Statistics for the Hidden Web 
    Aboulnaga Ashraf; Naughton Jeffrey F (2003)
    There have been several techniques proposed for building statistics for static XML data. However, very little work has been done in the area of building XML statistics for data sources that export XML views of data that ...
  • Raindrop: A Uniform and Layered Algebraic Framework for XQueries on XML Streams 
    Su Hong; Jian Jinhui; Rundensteiner Elke A (2003)
    XML stream applications bring the challenge of efficiently processing queries on sequentially accessible token-based data. While the automata model is naturally suited for pattern matching on tokenized XML streams, the ...
  • Exploring Group Mobility for Replica Data Allocation in a Mobile Environment 
    Huang Jiun-Long; Chen Ming-Syan; Peng Wen-Chih (2003)
    The growth in wireless communication technologies attracts a considerable amount of attention in mobile ad-hoc networks. Since mobile hosts in an ad-hoc network usually move freely, the topology of the network changes ...
  • Information Extraction from Biomedical Literature: Methodology, Evaluation and an Application 
    Subramaniam L Venkata; Mukherjea Sougata; Kankar Pankaj; Srivastava Biplav; Batra Vishal S; Kamesam Pasumarti V; Kothari Ravi (2003)
    Journals and conference proceedings represent the dominant mechanisms of reporting new biomedical results. The un-structured nature of such publications makes it difficult to utilize data mining or automated knowledge ...
  • A Reliable Storage Management Layer for Distributed Information Retrieval Systems 
    Clarke Charles L A; Tilker Philip L; Quoc Allen; Tran -Luan; Harris Kevin; Cheng Antonio S (2003)
    We present a storage management layer that facilitates the implementation of parallel information retrieval systems, and related applications, on networks of workstations. The storage management layer automates the process ...
  • iTopN: Incremental Extraction of the N Most Visible Objects 
    Bukauskas Linas; Mark Leo; Omiecinski Edward; H Michael (2003)
    The visual exploration of large databases calls for a tight coupling of database and visualization systems. Current vi-sualization systems typically fetch all the data and organize it in a scene tree, which is then used ...

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