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diskurz_doporucena_literatura [2012/02/08 15:40] ufal vytvořeno |
diskurz_doporucena_literatura [2012/03/12 08:30] hladka |
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Sem si můžeme psát odkazy na články (především) o diskurzu, které nás zaujaly a které doporučujeme k přečtení i ostatním, např. takto: | Sem si můžeme psát odkazy na články (především) o diskurzu, které nás zaujaly a které doporučujeme k přečtení i ostatním, např. takto: | ||
+ | * Rodger Kibble, Richard Power. 2004. Optimizing referential coherence in text generation. // | ||
+ | This article describes an implemented system which uses centering theory for planning of coherent | ||
+ | texts and choice of referring expressions. We argue that text and sentence planning need to be | ||
+ | driven in part by the goal of maintaining referential continuity and thereby facilitating pronoun | ||
+ | resolution: Obtaining a favorable ordering of clauses, and of arguments within clauses, is likely | ||
+ | to increase opportunities for nonambiguous pronoun use. Centering theory provides the basis for | ||
+ | such an integrated approach. Generating coherent texts according to centering theory is treated | ||
+ | as a constraint satisfaction problem. The well-known Rule 2 of centering theory is reformulated in | ||
+ | terms of a set of constraints—cohesion, | ||
+ | outputs obtained under a particular weighting of these constraints. This framework facilitates | ||
+ | detailed research into evaluation metrics and will therefore provide a productive research tool in | ||
+ | addition to the immediate practical benefit of improving the fluency and readability of generated | ||
+ | texts. The technique is generally applicable to natural language generation systems, which perform | ||
+ | hierarchical text structuring based on a theory of coherence relations with certain additional | ||
+ | assumptions. | ||
+ | | ||
+ | | ||
+ | **Abstract** | ||
+ | We present the second version of the Penn Discourse Treebank, PDTB-2.0, describing its lexically-grounded annotations of discourse | ||
+ | relations and their two abstract object arguments over the 1 million word Wall Street Journal corpus. We describe all aspects of the | ||
+ | annotation, including (a) the argument structure of discourse relations, (b) the sense annotation of the relations, and (c) the attribution | ||
+ | of discourse relations and each of their arguments. We list the differences between PDTB-1.0 and PDTB-2.0. We present representative | ||
+ | statistics for several aspects of the annotation in the corpus. |