In this paper we propose an epistemic concept language, where the epistemic operator is interpreted in terms of minimal knowledge. We show that the proposed formalism provides an adequate characterization of many non-rst-order aspects of frame-based knowledge representation systems, by admitting in the knowledge base various forms of epistemic sentences. In particular, we address the formalizat...

Description iogics (aiso caiied terminoiogicai iogics, or concept ianguagesj are fragments of first-order logic that provide a formal account of the basic features of frame-based systems. However, there are aspects of frame-based systems-such as nonmonotonic reasoning and procedural rules-that cannot be characterized in a standard first-order framework. Such features are needed for real applica...

this paper attempts to indicate that the two conceptual categories of evidentiality and epistemic modality are distinct although they may look similar; thus their corresponding adverbs also consist of separate subcategories of adverbs. to attain this goal, different data were gathered both from written and spoken sources and analyzed mostly with the help of semantic considerations in the framew...

“ba:y?d” as a persian lexeme is interwoven with modality, a semantic category and therefore has a complicated and thought- provoking semantic nature. this paper uses evidence from persian to investigate the usage of this lexeme and some of its semantic and pragmatic aspects in this language. the results indicate that this lexical category can convey a wide range of modal meanings in different c...

Agents producing and exchanging knowledge are forming as a whole a socio-semantic complex system. We argue that several significant aspects of the structure of a knowledge community are primarily produced by the co-evolution between agents and concepts, i.e. the evolution of an epistemic network. Focusing on a particular community of scientists working on a well-defined topic, we micro-found va...