نتایج جستجو برای: knowledge representation language
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In this paper, we propose an expressive concept description language, , for real world applications combining features of both Conceptual Graphs (CGs) and Description Logics (DLs). Regarding concept descriptions in CGs, namely existential, positive and conjunctive graphs, is the closure of this language under the Boolean operations. Now regarding DLs, is an extension of with graph structures in...
It is our contention that the World Wide Web poses challenges to knowledge representation systems that fundamentally change the way we should design KR languages. In this paper, we describe the Simple HTML Ontology Extensions (SHOE), a KR language which allows web pages to be annotated with semantics. We present a formalism for the language and discuss the features which make it well suited for...
A m o d i f i c a t i o n o f p r e d i c a t e l o g i c , c a l l e d m u l t i l a y e r e d l o g i c , i s d i s c u s s e d . I t i s d e s i g n e d a s t h e k n o w l e d g e r e p r e s e n t a t i o n l a n g u a g e f o r d e s c r i b i n g t h e s y s t e m s t h a t uses e n g i n e e r i n g k n o w l e d g e t o s u p p o r t t h e s y s t e m a n a l y s i s and d e s i g n . ...
The knowledge representation is an important factor in natural language generation since it limits the semantic capabilities of the generation system. This paper identifies several information types in a knowledge representation that can be used to generate meaningful responses to questions about database structure. Creating such a knowledge representation, however, is a long and tedious proces...
Ontologies and semantic frameworks can be used to improve the accuracy and expressiveness of natural language processing for the purpose of extracting meaning from technical documents. This is especially true when a rich ontology such as the Unified Medical Language System (UMLS) is available. This paper reports on some tools being developed to make this possible and on some experience with a u...
AbstrAct This chapter introduces planning and knowledge representation in the declarative action language K. Rooted in the area of Knowledge Representation & Reasoning, action languages like K allow the formalization of complex planning problems involving non-determinism and incomplete knowledge in a very flexible manner. By giving an overview of existing planning languages and comparing these ...
Knowledge representation systems aiming at full natural language understanding need to cover a wide range of semantic phenomena including lexical ambiguities, coreference, modalities, counterfactuals, and generic sentences. In order to achieve this goal, we argue for a multidimensional view on the representation of natural language semantics. The proposed approach, which has been successfully a...
This paper presents a Knowledge Representation Object Language (KROL) on top of Prolog. KROL aimed at providing the ability to develop second-generation expert systems. The main aspects of KROL include multi-paradigm knowledge representation (first-order predicate logic, objects, rules), inference mechanisms at different levels of granularity, explanation facility, object-oriented database mana...
NKRL is a semantic language expressly designed to deal with all sort of ‘narratives’, in particular with those (‘non-fictional narratives’) of an economic interest. From a knowledge representation point of view, its main characteristics consists in the use of two different sorts of ontologies, a standard, binary ontology of concepts, and an ontology of n-ary templates, where each template corre...
The component oriented language COMODEL for the description of technical systems is presented. It represents technical knowledge by means of functions and geometric properties of components in a uniform way based on a small number of elementary concepts. Components together with interactions between components can be composed to aggregates, and a whole technical system is viewed as a big aggreg...
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