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- Bertolt Brecht (1)
- David Hare (1)
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Manual development of deep linguistic resources is time-consuming and costly and therefore often described as a bottleneck for traditional rule-based NLP. In my PhD thesis I present a treebank-based method for the automatic acquisition of LFG resources for German. The method automatically creates deep and rich linguistic presentations from labelled data (treebanks) and can be applied to large data sets. My research is based on and substantially extends previous work on automatically acquiring wide-coverage, deep, constraint-based grammatical resources from the English Penn-II treebank (Cahill et al.,2002; Burke et al., 2004; Cahill, 2004). Best results for English show a dependency f-score of 82.73% (Cahill et al., 2008) against the PARC 700 dependency bank, outperforming the best hand-crafted grammar of Kaplan et al. (2004). Preliminary work has been carried out to test the approach on languages other than English, providing proof of concept for the applicability of the method (Cahill et al., 2003; Cahill, 2004; Cahill et al., 2005). While first results have been promising, a number of important research questions have been raised. The original approach presented first in Cahill et al. (2002) is strongly tailored to English and the datastructures provided by the Penn-II treebank (Marcus et al., 1993). English is configurational and rather poor in inflectional forms. German, by contrast, features semi-free word order and a much richer morphology. Furthermore, treebanks for German differ considerably from the Penn-II treebank as regards data structures and encoding schemes underlying the grammar acquisition task. In my thesis I examine the impact of language-specific properties of German as well as linguistically motivated treebank design decisions on PCFG parsing and LFG grammar acquisition. I present experiments investigating the influence of treebank design on PCFG parsing and show which type of representations are useful for the PCFG and LFG grammar acquisition tasks. Furthermore, I present a novel approach to cross-treebank comparison, measuring the effect of controlled error insertion on treebank trees and parser output from different treebanks. I complement the cross-treebank comparison by providing a human evaluation using TePaCoC, a new testsuite for testing parser performance on complex grammatical constructions. Manual evaluation on TePaCoC data provides new insights on the impact of flat vs. hierarchical annotation schemes on data-driven parsing. I present treebank-based LFG acquisition methodologies for two German treebanks. An extensive evaluation along different dimensions complements the investigation and provides valuable insights for the future development of treebanks.
This study analyses five British translations of Bertolt Brecht's 'Mutter Courage und ihre Kinder'. Two of these translations were written by speakers of German, and three by well-known British playwrights with no knowledge of the source text language. Four have been produced in mainstream British theatres in the past twenty-five years. The study applies translation studies methodology to a textual analysis which focuses on the translation of techniques of linguistic "Verfremdung", as well as linguistic expression of the comedy and of the political dimension in the work. It thus closes the gap in current Brecht research in examining the importance of his idiosyncratic use of language to the translation and reception of his work in the UK. The study assesses the ways in which the translator and director are influenced by Brecht's legacy in the UK and in turn, what image of Brecht they mediate through the production on stage. To this end, the study throws light on the formation of Brecht's problematic reputation in the UK, and it also highlights the social and political circumstances in early twentieth century Germany which prompted Brecht to develop his theory of an epic theatre. The focus on a linguistic examination allows the translator's contribution to the production process to be isolated. Together with an investigation of the reception of each performance text, this in turn facilitates a more accurate assessment of the translator and director's respective influence in the process of transforming a foreign-language text onto a local stage. The analysis also sheds light on the different approaches taken by speakers of German, and playwrights creating an English version from a literal translation. It pinpoints losses in translation and adaptation, and suggests how future versions may avoid these.