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| 2. |
- Angelov, Krasimir, 1978, et al.
(författare)
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A Framework for Conflict Analysis of Normative Texts Written in Controlled Natural Language
- 2013
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Ingår i: Journal of Logic and Algebraic Programming. - : Elsevier BV. - 1567-8326. ; 82:5-7, s. 216-240
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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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| 3. |
- Angelov, Krasimir, 1978
(författare)
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A Parallel WordNet for English, Swedish and Bulgarian
- 2020
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Ingår i: Proceedings of The 12th Language Resources and Evaluation Conference.
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Konferensbidrag (refereegranskat)abstract
- We present the parallel creation of a WordNet resource for Swedish and Bulgarian which is tightly aligned with the Princeton WordNet. The alignment is not only on the synset level, but also on word level, by matching words with their closest translations in each language. We argue that the tighter alignment is essential in machine translation and natural language generation. About one-fifth of the lexical entries are also linked to the corresponding Wikipedia articles. In addition to the traditional semantic relations in WordNet, we also integrate morphological and morpho-syntactic information. The resource comes with a corpus where examples from Princeton WordNet are translated to Swedish and Bulgarian. The examples are aligned on word and phrase level. The new resource is open-source and in its development we used only existing open-source resources.
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- Angelov, Krasimir, 1978, et al.
(författare)
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Editing with Search and Exploration for Controlled Languages
- 2018
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Ingår i: Controlled Natural Language / editors: Brian Davis, C. Maria Keet, Adam Wyner. - : IOS Press. - 0922-6389 .- 1879-8314. - 9781614999041 ; , s. 1-10
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Bokkapitel (refereegranskat)abstract
- We present an editor for controlled languages which is a combination of a syntax editor and a predictive editor. It shows a bird's-eye view which lets the user to explore what is possible in the language. Still, unlike the syntax editors the user is not expected to understand the underlying abstract syntax or ontology behind the language. It also lets the user to enter arbitrary phrases from which the editor finds the phrases which are the closest match.
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| 6. |
- Angelov, Krasimir, 1978, et al.
(författare)
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Fast Statistical Parsing with Parallel Multiple Context-Free Grammars
- 2014
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Ingår i: EACL'14, 14th Conference of the European Chapter of the Association for Computational Linguistics.
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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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| 7. |
- Angelov, Krasimir, 1978
(författare)
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Multiword expressions in multilingual applications within the Grammatical Framework
- 2019
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Ingår i: Representation and parsing of multiword expressions. - 2625-3127. ; , s. 127-146
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- The main focus of Grammatical Framework (GF) is in multilingual applications where the same type of content is produced and analyzed in several languages at once. This is achieved by joining the grammars for all languages with a shared interlingual representation. In designing the interlingua, multiword expressions are an important factor that must be considered. Here, I adopt the broader definition where everything that translates non-compositionally accross languages is considered an expression. In this chapter I present multiword expressions from a cross-lingual perspective in relation to an interlingual grammar.
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| 8. |
- Angelov, Krasimir, 1978, et al.
(författare)
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PGF: A Portable Run-time Format for Type-theoretical Grammars
- 2010
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Ingår i: Journal of Logic, Language and Information. - : Springer Science and Business Media LLC. - 0925-8531 .- 1572-9583. ; 19:2, s. 201-228
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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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| 9. |
- Angelov, Krasimir, 1978, et al.
(författare)
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Planning for Natural Language Generation in GF
- 2017
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Ingår i: Proceedings of the Workshop on Logic and Algorithms in Computational Linguistics 2017 (LACompLing2017) / Editors: Roussanka Loukanova and Kristina Liefke. - Stockholm : Stockholm University.
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Konferensbidrag (refereegranskat)
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| 10. |
- Angelov, Krasimir, 1978, et al.
(författare)
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Predicting Translation Equivalents in Linked WordNets
- 2016
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Ingår i: The 26th International Conference on Computational Linguistics. Proceedings of the Sixth Workshop on Hybrid Approaches to Translation (HyTra6). - : The COLING 2016 Organizing Committee. - 9784879747136
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Konferensbidrag (refereegranskat)
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