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Sökning: WFRF:(Angelov Krasimir 1978 )

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  • Angelov, Krasimir, 1978-, et al. (författare)
  • A Framework for Conflict Analysis of Normative Texts Written in Controlled Natural Language
  • 2013
  • Ingår i: Journal of Logic and Algebraic Programming. - 1567-8326. ; 82:5-7
  • Tidskriftsartikel (refereegranskat)abstract
    • In this paper we are concerned with the analysis of normative conflicts, or the detection of conflicting obligations, permissions and prohibitions in normative texts written in a Controlled Natural Language (CNL). For this we present AnaCon, a proof-of-concept system where normative texts written in CNL are automatically translated into the formal language CL using the Grammatical Framework (GF). Such CL expressions are then analysed for normative conflicts by the CLAN tool, which gives counter-examples in cases where conflicts are found. The framework also uses GF to give a CNL version of the counter-example, helping the user to identify the conflicts in the original text. We detail the application of AnaCon to two case studies and discuss the effectiveness of our approach.
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  • Angelov, Krasimir, 1978-, et al. (författare)
  • Fast Statistical Parsing with Parallel Multiple Context-Free Grammars
  • 2014
  • Ingår i: EACL'14, 14th Conference of the European Chapter of the Association for Computational Linguistics.
  • Konferensbidrag (refereegranskat)abstract
    • We present an algorithm for incremental statistical parsing with Parallel Multiple Context-Free Grammars (PMCFG). This is an extension of the algorithm by Angelov (2009) to which we added statistical ranking. We show that the new algorithm is several times faster than other statistical PMCFG parsing algorithms on real-sized grammars. At the same time the algorithm is more general since it supports non-binarized and non-linear grammars. We also show that if we make the search heuristics non-admissible, the parsing speed improves even further, at the risk of returning sub-optimal solutions.
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  • Angelov, Krasimir, 1978- (författare)
  • GF Runtime System
  • 2009
  • Licentiatavhandling (övrigt vetenskapligt)
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  • Angelov, Krasimir, 1978-, et al. (författare)
  • PGF: A Portable Run-time Format for Type-theoretical Grammars
  • 2010
  • Ingår i: Journal of Logic, Language and Information. - 0925-8531. ; 19:2, s. 201-228
  • Tidskriftsartikel (refereegranskat)abstract
    • Portable Grammar Format (PGF) is a core language for type-theoretical grammars. It is the target language to which grammars written in the high-level formalism Grammatical Framework (GF) are compiled. Low-level and simple, PGF is easy to reason about, so that its language-theoretic properties can be established. It is also easy to write interpreters that perform parsing and generation with PGF grammars, and compilers converting PGF to other formats. This paper gives a concise description of PGF, covering syntax, semantics, and parser generation. It also discusses the technique of embedded grammars, where language processing tasks defined by PGF grammars are integrated in larger systems.
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  • Angelov, Krasimir, 1978-, et al. (författare)
  • Speech-Enabled Hybrid Multilingual Translation for Mobile Devices
  • 2014
  • Ingår i: Proceedings of the 14th Conference of the European Chapter of the Association for Computational Linguistics.
  • Tidskriftsartikel (refereegranskat)abstract
    • This paper presents an architecture and a prototype for speech-to-speech translation on Android devices, based on GF (Grammatical Framework). From the user’s point of view, the advantage is that the system works off-line and yet has a lean size; it also gives, as a bonus, grammatical information useful for language learners. From the developer’s point of view, the advantage is the open architecture that permits the customization of the system to new languages and for special purposes. Thus the architecture can be used for controlled-language-like translators that deliver very high quality, which is the traditional strength of GF. However, this paper focuses on a general-purpose system that allows arbitrary input. It covers eight languages.
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