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Volha Bryl

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JAAMAS Journal 2010 Journal Article

Engineering and verifying agent-oriented requirements augmented by business constraints with \({\mathcal{B}}\) -Tropos

  • Marco Montali
  • Paolo Torroni
  • Volha Bryl

Abstract We propose \({\mathcal{B}}\) -Tropos as a modeling framework to support agent-oriented systems engineering, from high-level requirements elicitation down to execution-level tasks. In particular, we show how \({\mathcal{B}}\) -Tropos extends the Tropos methodology by means of declarative business constraints, inspired by the ConDec graphical language. We demonstrate the functioning of \({\mathcal{B}}\) -Tropos using a running example inspired by a real-world industrial scenario, and we describe how \({\mathcal{B}}\) -Tropos models can be automatically formalized in computational logic, discussing formal properties of the resulting framework and its verification capabilities.

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ECAI Conference 2010 Conference Paper

Using Background Knowledge to Support Coreference Resolution

  • Volha Bryl
  • Claudio Giuliano
  • Luciano Serafini
  • Kateryna Tymoshenko

Systems based on statistical and machine learning methods have been shown to be extremely effective and scalable for the analysis of large amount of textual data. However, in the recent years, it becomes evident that one of the most important direction of improvement in natural language processing (NLP) tasks, like word sense disambiguation, coreference resolution, relation extraction, and other tasks related to knowledge extraction, is by exploiting semantics. While in the past, the unavailability of rich and complete semantic descriptions constituted a serious limitation of their applicability, nowadays, the Semantic Web made available a large amount of logically encoded information (e. g. ontologies, RDF(S)-data, linked data, etc.), which constitute a valuable source of semantics. However, web semantics cannot be easily plugged into machine learning systems. Therefore the objective of this paper is to define a reference methodology for combining semantics information available in the web under the form of logical theories, with statistical methods for NLP. The major problems that we have to solve to implement our methodology concern (i) the selection of the correct and minimal knowledge among the large amount available in the web, (ii) the representation of uncertain knowledge, and (iii) the resolution and the encoding of the rules that combine knowledge retrieved from Semantic Web sources with semantics in the text. In order to evaluate the appropriateness of our approach, we present an application of the methodology to the problem of intra-document coreference resolution, and we show by means of some experiments on the ACE 2005 dataset, how the injection of knowledge is correlated to the improvement of the performance of our approach on this tasks.

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v2026.09.13