The rigidness of enterprise software systems is a fundamental problem in information systems engineering, demonstrated by the high expenses involved in developing new systems or enhancing existing ones. The problem is becoming acute as the pace of changes in information systems becomes faster. The field of Semantic Web addresses this problem by formally specifying Web services and extending the...

This paper introduces the Sensapp platform, a semantic and OGCbased sensor application platform to enable users to register, annotate, search, visualize, and compose OGC-based sensors and services for creating addedvalue services and applications. Functionalities of Sensapp such as sensor registration, sensor data visualization, visual composition and generation of executable service compositio...

We present a matchmaking system that exploits ontologybased (OWL-S) service descriptions to discover service compositions capable of satisfying a client request. Efficiency is achieved by pre-computing off-line a (hyper)graph that represents the functional dependencies among different (sub)services. The notion of Semantic Field [1] is employed to cross different ontologies.

Dynamic HMI generation based on declarative descriptions solves the problem of dynamically integrating services into the HMI that are not known at design/deploy time of the HMI. [Hi07] describes this approach for individual services. In this paper, we show how we have extended this approach to enable HMI generation for compositions of services and their semantic interoperation.

the link between studies in discourse analysis and corpus linguistics has created new fields of research previously unattended. one of these areas is the study of semantic prosody produced through frequent collocation of a lexical item with a collection of words. semantic prosody is the positive, negative or neutral shade of meaning which a seemingly neutral word adopts after frequent collocati...

POESIA (Processes for Open-Ended Systems for Inforrnation Analysis), the approach proposed in this work, supports the construction of complex processes that involve the integration and analysis of data from severa! sources, particularly in scientific applications. This approach is centered in two types of semantic Web mechanisms: scientific workflows, to specify and compose Web services; and do...

Given appropriate representations of the semantic relations between carpenter and wood and between mason and stone (for example, vectors in a vector space model), a suitable algorithm should be able to recognize that these relations are highly similar (carpenter is to wood as mason is to stone; the relations are analogous). Likewise, with representations of dog, house, and kennel, an algorithm ...

We prove that the sum of greatest common divisors of parts in all compositions of n equals the sum of lengths of all cyclic compositions of n. The proof highlights structural similarities between the set of compositions of n and the set of cyclic compositions of n. 1. Definitions and Statement A composition of the positive integer n is an ordered partition of n; that is, a vector ( ) r p p ...,...

Automation of Web service composition is one of the most interesting challenges facing the Semantic Web today. In this paper we propose a mean of performing automated Web service composition by exploiting semantic matchmaking betweenWeb service parameters (i.e., outputs and inputs) to enable their connection and interaction. The key idea is that the matchmaking enables, at run time, finding sem...