One of the challenges in the field of content-based image retrieval is to bridge the semantic gap that exists between the information extracted from visual data using classifiers, and the interpretation of this data made by the end users. The semantic gap is a cascade of 1) the transformation of image pixels into labelled objects and 2) the semantic distance between the label used to name the c...

Coded experience and effective semiotic systems, organizations of patterns of signs that comprise a system of meaning, have proved essential for the propagation of knowledge. In education, communication via semiotic systems forms an important role in guiding children toward the effective use of information and techniques, and it is important that children be able to decode a given representatio...

Signs, symbols, and signals are essential to the survival and evolution of all complex functional organizations that utilize "information." We discuss basic semiotic relations inherent in signalling systems (communication), scientific models (epistemology), adaptive devices (control), and biological organisms (construction). For each of these different functional realms, basic syntactic, semant...

Approaches to artificial intelligence research based on autonomous agents have thus far primarily relied on cognitive science and other psychologically motivated approaches to the social world. These approaches have been a logical outcome of the researchers' concentration on agent building. However, recent developments in the field have revealed the need for a wider and primarily socially cente...

This paper proposes representation dimensions of models of eXtensible Web-based Informationintensive Task-oriented Systems (X-WITS). The proposal is expressed in a unifying language that acts as the base for the construction of extensions and generation of texts, which are descriptions or narratives of interaction flows between end-users and X-WITS. The general architecture of XWITS is presente...

Having quality information is crucial for effective operations and decision making within organisations. There is little agreement, however, about how information quality should be defined and measured. The Semiotic Information Quality framework provides a sound theoretical basis for defining information quality at three levels: syntactic (form), semantic (content), and pragmatic (usage). Objec...

People with autism present several disabilities in communication, social interaction and behavioral fields. There is a wide variation among these individuals and it is essential to develop therapies and materials customized for them. There are many design approaches in Human-Computer Interaction, but most of them present some limitations for designing to this audience. We conducted a study usin...