Documentos proporcionados por el Centro de Estudios Informáticos de la UCLV para el apoyo a las investigaciones desarrolladas en el marco del proyecto VLIR dentro de la Red TIC.
Antoniou Grigoris; Harmelen Frank Van; Antoniou Grigoris; Harmelen Frank Van(2008)
The development of the Semantic Web, with machine-readable content, has the potential to revolutionize the World Wide Web and its uses. A Semantic Web Primer provides an introduction and guide to this still emerging field, ...
Although conventional tests are often used for determining a student's overall competence, they are seldom used for determining a fine-grained model. However, this problem does arise occasionally, such as when a conventional ...
The use of markup languages like SGML, HTML, or XML for encoding the structure of documents or linguistic data has lead to many databases where entries are adequately described as trees. In this context querying formalisms ...
Recently the concept of a clarity score was introduced in order to measure the ambiguity of a query in relation to the collection in which the query issuer is seeking information [Cronen-Townsend et al. Proc. ACM SIGIR2002, ...
Most modern database applications contain a significant amount of time dependent data and a substantial proportion of this data is now-relative, i.e. current now. While much research has focussed on indexing temporal data ...
Prasher Sham; Zhou Xiaofang; St Lucia; Qld; Australia(2003)
Aggregating spatial objects is a necessary step in generating spatial data cubes to support roll-up/drill-down operations. Current approaches face performance bottleneck issues when attempting to dynamically aggregate ...
In information retrieval, queries can fail to find documents due to mismatch in terminology. Query expansion is a well-known technique addressing this problem, where additional query terms are automatically chosen from ...
Lazy DFA (Deterministic Finite Automata) approach has been recently proposed to for efficient XML stream data processing. This paper discusses the drawbacks of the approach, suggests several optimizations as solutions, and ...
Carter Belinda M; Joe; Lin Y.-C; Orlowska Maria E(2003)
Workflow technology has met with success in a variety of industries, although several limitations have emerged. One such drawback is the inflexibility of specification languages, including a lack of support for inter-task ...
Reflective Relational Machines were introduced by S. Abiteboul, C. Papadimitriou and V. Vianu in 1994, as variations of Turing machines which are suitable for the computation of queries to relational databases. The machines ...
XML is becoming the dominant standard for representing and exchanging data on the World Wide Web. The ability to transform and present data in XML is crucial and XSLT (Extensible Stylesheet Language Transformations) is the ...
Web search engines crawl the web to fetch the data that they index. In this paper we reexamine that need, and evaluate the network costs associated with data acquisition , and alternative ways in which a search service ...
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, ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...