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

  • Index Compression using Fixed Binary Codewords 
    Ngoc Vo; Moffat Anh Alistair (2004)
    Document retrieval and web search engines index large quantities of text. The static costs associated with storing the index can be traded against dynamic costs associated with using it during query evaluation. Typically, ...
  • Clustering Moving Objects for Spatio-temporal Selectivity Estimation 
    Zhang Qing; Lin Xuemin (2004)
    Many spatio-temporal applications involve managing and querying moving objects. In such an environment, predic-tive spatio-temporal queries become an important query class to be processed to capture the nature of moving ...
  • Representing and Reasoning on XForms Document 
    Peng Yew; Cheow Guido; Governatori (2003)
    Forms are the most common way to interface users and Web-based applications. Traditional forms cannot provide the functionality needed to fulfil the requirements of complex applications. As such, there is a need for a more ...
  • Conflict Scheduling of Transactions on XML Documents 
    Dekeyser Stijn; Hidders Jan (2004)
    In the last few years an interest in native XML databases has surfaced. With other authors we argue that such databases need their own provisions for concurrency control since traditional methods are inadequate to capture ...
  • A Model of Dynamic Resource Allocation in Workflow Systems 
    Governatori Guido; Rotolo Antonino; Sadiq Shazia (2003)
    Current collaborative work environments are characterized by dynamically changing organizational structures. Although there have been several efforts to refine work distribution, especially in workflow management, most ...
  • How Valuable is External Link Evidence when Searching Enterprise Webs? 
    Hawking David; Crimmins Francis; Craswell Nick; Upstill Trystan; Hawking@csiro David; Au (2003)
    Link information, especially anchor text, is known to be very useful for effective ranking of web pages, particularly in response to navigational queries. We investigated whether enterprise webs contain sufficient internal ...
  • Web Service Composition Transaction Management 
    Limthanmaphon Benchaphon; Zhang Yanchun (2003)
    The development of new web services by composition of existing services is becoming an extensive approach. This has resulted in transactions that span in multiple web services. These business transactions may be unpredictable ...
  • Data Flow and Validation in Workflow Modelling 
    Sadiq Shazia; Orlowska Maria; Sadiq Wasim; Foulger Cameron (2003)
    A complete workflow specification requires careful integration of many different process characteristics. Decisions must be made as to the definitions of individual activities, their scope, the order of execution that ...
  • A Collaborative Approach for Caching Dynamic Data in Portal Applications 
    Mahdavi Mehregan; Shepherd John; Benatallah Boualem (2004)
    Portals are one of the rapidly growing applications on the Web, providing a single interface to access different sources (providers). Providing fast response time is one of the critical issues in such applications. ...
  • Incorporating Business Requirements and Constraints in Database Conceptual Models 
    Khan Khaled M; Kapurubandara Mahesha; Chadha Urvashi (2003)
    Entity relationship (ER) approach is predominantly used for conceptual modelling of database systems in terms of entities and their relationships. The approach does not provide sufficient support for incorporating business ...
  • On the Road to Behavior-Based Integration 
    Stumptner Markus; Schrefl Michael; Grossmann Georg (2003)
    Integration of autonomous object-oriented systems requires the integration of object structure and object behaviour. Research in federated information systems has so far mainly addressed integration of object structure. ...
  • An Experimental Examination of Property Precedence in Conceptual Modelling 
    Parsons Jeffrey; Cole Linda; Hartmann; Roddick John (2003)
    Interest in evaluating conceptual modelling techniques has recently experienced a revival, in part due to widespread adoption of the Unified Modelling Language (UML). In addition, the use of ontology as a framework for ...
  • Putting Integrated Information in Context: Superimposing Conceptual Models with SPARCE 
    Murthy Sudarshan; Maier David; Delcambre Lois; Bowers Shawn (2003)
    A person working with diverse information sources—with possibly different formats and information models—may recognize and wish to express conceptual structures that are not explicitly present in those sources. Rather than ...
  • Enterprise Architecture Modelling Using Elastic Metaphors 
    Khoury Gerald R; Simoff Simeon J (2003)
    Despite the hype surrounding enterprise architectures, they have delivered little on their promise. In this paper, we argue that enterprise architectures built using component-based frameworks are fundamentally flawed, in ...
  • Automating XML documents Transformations: A conceptual modelling based approach 
    Boukottaya A; Vanoirbeek C; Paganelli F; Khaled O Abou; Aboukhaled@eif Omar; Ch (2003)
    The growing use of XML markup language has made a large amount of heterogeneous XML documents widely available. As the number of applications that utilize heterogeneous XML documents grows, the importance of XML documents ...
  • An Adaptive Information Retrieval System based on Associative Networks 
    Berger Helmut; Dittenbach Michael; Merkl Dieter (2003)
    In this paper we present a multilingual information retrieval system that provides access to Tourism information by exploiting the intuitiveness of natural language. In particular, we describe the knowledge representation ...
  • Context-Aware Web Information Systems 
    Binemann-Zdanowicz Aleksander; Kaschek Roland; Schewe Klaus-Dieter; Thalheim Bernhard (2003)
    Apart from completeness usability, performance and maintainability are the key quality aspects for Web information systems. Considering usability as key implies taking usage processes into account right from the beginning ...
  • Strategies for Processing ad hoc Queries on Large Data Warehouses * General Terms Algorithms, Performance 
    Stockinger Kurt; Geneva Cern; Switzerland Kurt; Stockinger@cern; Ch Kesheng; Wu; Shoshani Arie (2002)
    As data warehousing applications grow in size, existing data organizations and access strategies, such as relational tables and B-tree indexes, are becoming increasingly ineffective. The two primary reasons for this are ...
  • Constructing an OLAP Cube from Distributed XML Data 
    Niemi Tapio; Niinimäkiniinim¨niinimäki Marko; Nummenmaa Jyrki; Thanisch Peter (2002)
    On-Line Analytical Processing (OLAP) is a powerful method for analysing large data warehouse data. Typically, the data for an OLAP database is collected from a set of data repositories such as e.g. operational databases. ...
  • A Multidimensional and Multiversion Structure for OLAP Applications 
    Body Mathurin; Miquel Maryvonne; Bédard Yvan; Tchounikine Anne (2002)
    When changes occur on data organization, conventional multidimensional structures are not adapted because dimensions are supposed to be static. In many cases, especially when time covered by the data warehouse is large, ...

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