Query formulation is a key aspect of information retrieval, contributing to both the efficiency and usability of many semantic applications. A number of query languages, such as SPARQL, have been developed for the Semantic Web; however, there are, as yet, few tools to support end users with respect to the creation and editing of semantic queries. In this paper we present NITELIGHT, a graphical ...

histone deacetylase inhibitors have gained a great deal of attention recently for the treatment of cancers and inflammatory diseases. so design of new inhibitors is of great importance in pharmaceutical industries and labs. creating pharmacophor models in order to design new molecules or search a library for finding lead compounds is of great interest. this approach reduces the overall cost ass...

routing in wireless sensor networks (wsns) is a very challenging task due to the large number of nodes, their mobility and lack of proper infrastructure. since the sensors are battery powered devices, energy efficiency is considered as one of the main factors in designing routing protocols in wsns. most of energy-aware routing protocols are mere energy savers that attempt to decrease the energy...

A major problem in information retrieval is the difficulty to define the information needs of user and on the other hand, when user offers your query there is a vast amount of information to retrieval. Different methods , therefore, have been suggested for query expansion which concerned with reconfiguring of query by increasing efficiency and improving the criterion accuracy in the information...

Advance of search engines has removed an end-user’s constraint on search such as cost (free), operation time (fast response), language (cross-lingual), media (multimedia), and more recently, time-lag from content generation (realtime search). Consequently, we do not usually perceive strong constraint on the use of search engines. The removal of constraint is often seen as an improvement of a sy...

Recently many music information retrieval (MIR) methods have been developed; most of these employ a music representation and have a notion of musical similarity. However, there is still no user-centered framework that allows the comparison of their different MIR techniques. This paper describes Muugle (Musical Utrecht University Global Lookup Engine), which is such a framework. Currently it has...

Visual data exploration tools allow users to quickly gather insights from new datasets. As dataset sizes continue to increase, though, new techniques will be necessary to maintain the interactivity guarantees that these tools require. Approximate query processing (AQP) attempts to tackle this problem and allows systems to return query results at “human speed.” However, existing AQP techniques s...

With the explosion of information available on the Web, finding specific medical information in an efficient way has become a considerable challenge. PubMed/MEDLINE offers an alternative to free-text searching on the web, allowing searchers to do a keyword-based search using Medical Subject Headings. However, finding relevant information within a limited time frame remains a difficult task. The...

Computer Science Department, University of Leipzig D-04109 Leipzig, Germany e-mail: [email protected] In the context of an extended understanding of information retrieval, multimodality and vagueness are discussed as key problems of materials information system development. The WING-M2 prototype is presented which combines an object-oriented graphical interface with natural langua...