Searching for authors named "Nikiforos Karamanis" – sorted by Relevance.

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13 documents found, showing 1 through 10. Next 10 →

Exploring Entity-based Coherence
by Nikiforos Karamanis — 2001 — University of Sheffield
…of entity-based coherence for choosing the best ordering of propositions for the generation of a descriptive text over the less felicitous alternatives. We refer to Centering Theory (CT, Grosz et al. 1995; Walker et al. 1998) in order to discuss ve related evaluation metrics of entity-based coheren…
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Evaluating centering for sentence ordering in two new domains
by Nikiforos Karamanis — 2006 — In Proceedings of HLT-NAACL
…This paper builds on recent research investigating sentence ordering in text production by evaluating the Centering-based metrics of coherence employed by Karamanis et al. (2004) using the data of Barzilay and Lapata (2005). This is the first time that Centering is evaluated empirically as a sentenc…
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Using a corpus of sentence orderings defined by many experts to evaluate metrics of coherence for text structuring
by Nikiforos Karamanis — 2005 — In Proceedings of ENLG
…This paper addresses two previously unresolved issues in the automatic evaluation of Text Structuring (TS) in Natural Language Generation (NLG). First, we describe how to verify the generality of an existing collection of sentence orderings defined by one domain expert using data provided by additio…
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A review of recent corpus-based methods for evaluating information ordering in text production
by Nikiforos Karamanis — 2005 — In Proceedings of Corpus Linguistics 2005 Workshop on Using Corpora for NLG
…This paper surveys the corpus-based methods for evaluating Information Ordering (IO) which emerged recently in the literature on text production. First, we discuss how different assumptions about the input to IO make the preparation of corpora suitable for evaluation more challenging in Natural Lang…
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Ordered Set Combinatory Categorial Grammar
by Nikiforos Karamanis
…In this paper, we discuss data from Greek that provide evidence in favour of Set-CCG, a formalism which shares the attractive linguistic and computational aspects of CCG.…
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Greek Nominal Morphology for a Classification-Based Natural Language Generation System
by Nikiforos Karamanis — in Proceedings of the 14 th International Symposium on Theoretical and Applied Linguistics, 20-22 April 2000. Department of Theoretical and Applied Linguistics, School of English, Aristotle Univ. of Thessaloniki
…This paper presents the Noun Morphological component of a Greek Natural Language Generation system which is based on a current system for English called IDAS. First, I describe the methodology that I followed in order to develop the Greek Lexicon and Grammar, using I1, IDAS's classification-based kn…
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Centering Theory for Coherent Natural Language Generation
by Nikiforos Karamanis — 2000
…this paper we follow the version that was rst implemented in the algorithm by Brennan et al. (1987) and is more clearly stated in Walker et al. (1998a). Under this interpretation the Cb(Un) can be unde ned…
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Generating Multiple-Choice Test Items from Medical Text: A Pilot Study
by Nikiforos Karamanis — 2006 — In Proceedings of INLG 2006
…We report the results of a pilot study on generating Multiple-Choice Test Items from medical text and discuss the main tasks involved in this process and how our system was evaluated by domain experts. 1…
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Entity Coherence for Descriptive Text Structuring
by Nikiforos Karamanis Doctor — 2003
…Although entity coherence, i.e. the coherence that arises from certain patterns of references to entities, is of attested importance for characterising a descriptive text structure, whether and how current formal models of entity coherence such as Centering Theory can be used for the purposes of nat…
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Evaluating centering-based metrics of coherence for text structuring using a reliably annotated corpus
by Nikiforos Karamanis, Massimo Poesio, Chris Mellish, Jon Oberl — 2004 — In Proceedings of the ACL
…We use a reliably annotated corpus to compare metrics of coherence based on Centering Theory with respect to their potential usefulness for text structuring in natural language generation. Previous corpus-based evaluations of the coherence of text according to Centering did not compare the coherence…
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