This paper presents a Conceptual Graph (cg) framework to the Generation of Referring Expressions (gre). Employing Conceptual Graphs as the underlying formalism allows a new rigorous, semantically rich, approach to gre: the intended referent is indenti ed by a combination of facts that can be deduced in its presence but not if it would be absent. Since cgs allow a substantial generalisation of t...

DynaLearn is an Interactive Learning Environment that facilitates a constructive approach to developing a conceptual understanding of how systems work. The software can be put in different interactive modes facilitating alternative learning experiences, and as such provides a toolkit for educational research.

Conceptual Graph (CG) knowledge bases can be queried only by mean of goals. We show that some conventional operators (projection, selection, union, cartesian product) can not be expressed unless a set of rules is added to the knowledge base prior to the inference, which is highly inconvenient. Therefore, we propose an algebra and a declarative SQL-like language for the CG model, which permits t...

Two major problems in constructing data federations (for example, data warehouses and database federations) concern achieving and maintaining consistency and a uniform representation of the data on the global level of the federation. The first step in creating uniform representations of data is known as data extraction, whereas data reconciliation is concerned with resolving data inconsistencie...

This article provides a critical, cautionary stance toward the future structure of “Internet studies” as a field. A social constructionist reading of the process of organizing reveals the ways in which apparently obdurate structures are constructed and negotiated through everyday discursive practices. Subsequent structures and practices function ideologically to control organizational members i...

This article investigates the problem of how language learners decipher what words mean. In many recent models of language evolution, agents are provided with innate meanings a priori and explicitly transfer them to each other as part of the communication process. By contrast, I investigate how successful communication systems can emerge without innate or transferable meanings, and show that th...