*Ingenierías y Ciencias de la Computación (Proyecto VLIR): Recent submissions

  • A General-Purpose Compression Scheme for Large Collections 
    Cannane Adam; Williams Hugh E (2002)
    Compression of large collections can lead to improvements in retrieval times by offsetting the CPU decompression costs with the cost of seeking and retrieving data from disk. We propose a semistatic phrase-based approach ...
  • Query Clustering Using User Logs 
    Wen Ji-Rong; Research Microsoft; Nie Asia Jian-Yun (2002)
    Query clustering is a process used to discover frequently asked questions or most popular topics on a search engine. This process is crucial for search engines based on question-answering. Because of the short lengths of ...
  • Fast Phrase Querying With Combined Indexes 
    Williams Hugh E; Zobel Justin; Bahle Dirk (2004)
    Search engines need to evaluate queries extremely fast, a challenging task given the quantities of data being indexed. A significant proportion of the queries posed to search engines involve phrases. In this article we ...
  • Analysis of Lexical Signatures for Improving Information Persistence on the World Wide Web SEUNG-TAEK PARK Yahoo! Research Labs Analysis of Lexical Signatures 
    Pennock David M; Park S.-T; Yahoo (2004)
    A lexical signature (LS) consisting of several key words from a Web document is often sufficient information for finding the document later, even if its URL has changed. We conduct a large-scale empirical study of nine ...
  • Evaluating Implicit Measures to Improve Web Search 
    Fox Steve; Karnawat Kuldeep; Dumais Susan; White Thomas (2005)
    Of growing interest in the area of improving the search experience is the collection of implicit user behavior measures (implicit measures) as indications of user interest and user satisfaction. Rather than having to submit ...
  • Qualitative Decision Making in Adaptive Presentation of Structured Information 
    Brafman Ronen I; Shimony Solomon E; Brafman; Shimony S E (2004)
    We present a new approach for adaptive presentation of structured information, based on preference-based constrained optimization techniques rooted in qualitative decision-theory. In this approach, document presentation ...
  • Distributed Content-Based Visual Information Retrieval System on Peer-to-Peer Networks 
    King Irwin; Cheuk Hang; Ng Ka Cheung; Sia (2004)
    With the recent advances of distributed computing, the limitation of information retrieval from a centralized image collection can be removed by allowing distributed image data sources to interact with each other for data ...
  • A Methodology for Analyzing SAGE Libraries for Cancer Profiling 
    Sander J ¨ Org; Ng Raymond T; Sleumer Monica C; Yuen Man Saint; Jones Steven J; Ng M C; Sleumer M S; Yuen (2005)
    Serial Analysis of Gene Expression (SAGE) has proven to be an important alternative to microarray techniques for global profiling of mRNA populations. We have developed preprocessing methodolo-gies to address problems in ...
  • Incorporating Contextual Information in Recommender Systems Using a Multidimensional Approach 
    Adomavicius Gediminas; Tuzhilin Alexander; Tuzhilin A (2005)
    The article presents a multidimensional (MD) approach to recommender systems that can provide recommendations based on additional contextual information besides the typical information on users and items used in most of ...
  • Relevance Models to Help Estimate Document and Query Parameters 
    Bodoff David; Kong Hong (2004)
    A central idea of Language Models is that documents (and perhaps queries) are random variables , generated by data-generating functions that are characterized by document (query) parameters. The key new idea of this paper ...
  • A Model to Support Collaborative Work in Virtual Enterprise 
    Wynen Franck; Perrin Olivier; Godart Claude (2002)
    Current needs for virtual enterprises projects management lead to adapt production oriented management systems (i.e. workflow) to collaboration and necessary co-decision features. Such projects are submitted to unpredictable ...
  • Architectures Enabling Scalable Internet Search 
    Uhl Axel
  • SVM in Oracle Database 10g: Removing the Barriers to Widespread Adoption of Support Vector Machines 
    Milenova Boriana L; Yarmus Joseph S; Campos Marcos M (2005)
    Contemporary commercial databases are placing an increased emphasis on analytic capabilities. Data mining technology has become crucial in enabling the analysis of large volumes of data. Modern data mining techniques have ...
  • Distributed Privacy Preserving Information Sharing 
    Zhang Nan; Zhao Wei (2005)
    In this paper, we address issues related to sharing information in a distributed system consisting of autonomous entities, each of which holds a private database. Semi-honest behavior has been widely adopted as the model ...
  • Robust Real-time Query Processing with QStream 
    Schmidt Sven; Legler Thomas; Schär Sebastian; Lehner Wolfgang (2005)
    Processing data streams with Quality-of-Service (QoS) guarantees is an emerging area in existing streaming applications. Although it is possible to negotiate the result quality and to reserve the required processing resources ...
  • The TEXTURE Benchmark: Measuring Performance of Text Queries on a Relational DBMS 
    Ercegovac Vuk; Dewitt David J; Ramakrishnan Raghu (2005)
    We introduce a benchmark called TEXTURE (TEXT Under RElations) to measure the relative strengths and weaknesses of combining text processing with a relational workload in an RDBMS. While the well-known TREC benchmarks focus ...
  • Online Estimation For Subset-Based SQL Queries * 
    Jermaine Christopher; Dobra Alin; Pol Abhijit; Joshi Shantanu (2005)
    The largest databases in use today are so large that answering a query exactly can take minutes, hours, or even days. One way to address this problem is to make use of approximation algorithms. Previous work on online ...
  • Database-Inspired Search 
    Konopnicki David; Shmueli Oded (2005)
    " W3QL: A Query Language for the WWW " , published in 1995, presented a language with several distinctive features. Employing existing indexes as access paths, it allowed the selection of documents using conditions on ...
  • Optimistic Intra-Transaction Parallelism on Chip Multiprocessors 
    Colohan Christopher B; Ailamaki Anastassia; Gregory J; † Steffan; Mowry Todd C (2005)
    With the advent of chip multiprocessors, exploiting intra-transaction parallelism is an attractive way of improving transaction performance. However, exploiting intra-transaction parallelism in existing database systems ...
  • U-DBMS: A Database System for Managing Constantly-Evolving Data 
    Cheng Reynold; Singh Sarvjeet; Prabhakar Sunil (2005)
    In many systems, sensors are used to acquire information from external environments such as temperature, pressure and locations. Due to continuous changes in these values, and limited resources (e.g., network bandwidth and ...

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