Documentos: Recent submissions

  • An Information-Theoretic Approach to Automatic Query Expansion 
    Fondazione Claudio Carpineto; Bordoni Ugo; Mori Renato De; Romano Giovanni; Bordoni Fondazione Ugo; Bigi Brigitte
    Techniques for automatic query expansion from top retrieved documents have shown promise for improving retrieval effectiveness on large collections; however, they often rely on an empirical ground, and there is a shortage ...
  • Building a Distributed Full-Text Index for the Web 
    Melnik Sergey; Raghavan Sriram; Yang Beverly; Garcia-Molina Hector (2001)
    We identify crucial design issues in building a distributed inverted index for a large collection of Web pages. We introduce a novel pipelining technique for structuring the core index-building system that substantially ...
  • On the Design of a Learning Crawler for Topical Resource Discovery On the Design of a Learning Crawler for Topical Resource Discovery 
    Aggarwal Charu C; Yu Philip S (2001)
    In recent years, the World Wide Web has shown enormous growth in size. Vast repositories of information are available on practically every possible topic. In such cases, it is valuable to perform topical resource discovery ...
  • Genre Taxonomy: A Knowledge Repository of Communicative Actions 
    Yoshioka Takeshi; Co Fuji Xerox; Herman Ltd George; Yates Joanne; Orlikowski Wanda (2002)
    We propose a genre taxonomy as a knowledge repository of communicative structures or " typified actions " enacted by organizational members. The genre taxonomy is intended to help people make sense of diverse types of ...
  • Application of Aboutness to Functional Benchmarking in Information Retrieval 
    Wong Kam-Fai; Wong K.-F; Cheng C.-H; Song D; Bruza P (2002)
    Experimental approaches are widely employed to benchmark the performance of an information retrieval (IR) system. Measurements in terms of recall and precision are computed as performance indicators. Although they are good ...
  • A Highly Scalable and Effective Method for Metasearch A Highly Scalable Method for Metasearch 
    Meng Weiyi; Wu Zonghuan; Meng W; Wu Z; Li Z; Yu C (2001)
    A metasearch engine is a system that supports unified access to multiple local search engines. Database selection is one of the main challenges in building a large-scale metasearch engine. The problem is to efficiently and ...
  • Computing Graphical Queries over XML Data 
    Comai Sara; Milano Politecnico Di (2002)
    The rapid evolution of XML from a mere data exchange format to a universal syntax for encoding domain-specific information raises the need for new query languages specifically conceived to address the characteristics of ...
  • Query-Based Sampling of Text Databases 
    Connell Jamie Callan/Margaret
    The proliferation of searchable text databases on corporate networks and the Internet causes a database selection problem for many people. Algorithms such as gGlOSS and CORI can automatically select which text databases ...
  • Approximate Spatio-Temporal Retrieval 
    Papadias Dimitris; Kong Hong; Cwi Nikos Mamoulis; Delis Vasilis (1910)
    This paper proposes a framework for the handling of spatio-temporal queries with inexact matches, using the concept of relation similarity. We initially describe a binary string encoding for 1D relations that permits the ...
  • Fast and Flexible Word Searching on Compressed Text 
    Silva Edleno; Moura De; Baeza-Yates R
    We present a fast compression and decompression technique for natural language texts. The novelties are that (1) decompression of arbitrary portions of the text can be done very efficiently, (2) exact search for words and ...
  • Scaling Question Answering to the Web 
    Kwok Cody; Etzioni Oren; Weld Daniel S (2001)
    The wealth of information on the web makes it an attractive resource for seeking quick answers to simple, factual questions such as " who was the first American in space? " or " what is the second tallest mountain in the ...
  • Extending Document Management Systems with User-Specific Active Properties 
    Dourish Paul; Edwards W Keith; Lamarca Anthony; Lamping John; Petersen Karin; Salisbury Michael; Terry Douglas B; Thornton James
    Document properties are a compelling infrastructure on which to develop document management applications. A property-based approach avoids many of the problems of traditional hierarchical storage mechanisms, reflects ...
  • Efficient content-based indexing of large image databases 
    Kabuka Essam A. El-Kwae/Mansur R.
    Large image databases have emerged in various applications in recent years. A prime requisite of these databases is the means by which their contents can be indexed and retrieved. A multilevel signature file called the Two ...
  • Improving the Effectiveness of Information Retrieval with Local Context Analysis 
    Xu Jinxi; Technologies Bbn; Croft W Bruce
    Techniques for automatic query expansion have been extensively studied in information retrieval research as a means of addressing the word mismatch between queries and documents. These techniques can be categorized as ...
  • Chimera: Hypermedia for Heterogeneous Software Development Environments 
    Anderson Kenneth M; Taylor Richard N; Whitehead E James; Anderson K M; Taylor R N; Whitehead E J (2000)
    Emerging software development environments are characterized by heterogeneity: they are composed of diverse object stores, user interfaces, and tools. This paper presents an approach for providing hypermedia services in ...
  • Evaluating the Performance of Distributed Architectures for Information Retrieval Using a Variety of Workloads 
    Cahoon Brendon; Mckinley Kathryn S; Mckinley K S
    The information explosion across the Internet and elsewhere offers access to an increasing number of document collections. In order for users to effectively access these collections, information retrieval (IR) systems must ...
  • Beyond Intratransaction Association Analysis: Mining Multidimensional Intertransaction Association Rules 
    Lu Hongjun; Kong Hong; Lu H (2001)
    In this paper, we extend the scope of mining association rules from traditional single-dimensional intratransaction associations, to multidimensional intertransaction associations. Intratransaction associations are the ...
  • Model-Driven Development of Web Applications: The Autoweb System 
    Fraternali Piero; Paolini Paolo; Milano Politecnico Di (2001)
    This paper describes a methodology for the development of WWW applications and a tool environment specifically tailored for the methodology. The methodology and the development environment are based upon models and techniques ...
  • Beneath the Surface of Organizational Processes: A Social Representation Framework for Business Process Redesign 
    Katzenstein Gary; Kong Hong; Lerch F Javier (2001)
    This paper raises the question, " What is an effective representation framework for organizational process redesign? " By combining our knowledge of existing process models with data from a field study, the paper develops ...
  • Shortest-Substring Retrieval and Ranking 
    Clarke Charles L A; Cormack Gordon V
    We present a model for arbitrary passage retrieval using Boolean queries. The model is applied to the task of ranking documents, or other structural elements, in the order of their expected relevance. Features such as ...

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