Bateman, John
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Bateman, John
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Bateman, John
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Item type:Publication, How to make a wheelchair understand spoken commands(2019-05-06); ; ; In this thesis, I aimed at recognising a wheelchair user' s intent when making commands to an intelligent wheelchair, relying on what the user meant by the words chosen, the situation the interactants are in, and the ongoing discourse of interaction, making use of only symbolic processing. For this purpose, I created a language-based taxonomy of simple things, locations and processes that could be integrated into a rule-based understanding module, composed of a speech recogniser, a CCG-based text analyser, trackers of states and changes in the environment and four mechanisms to integrate contextual features: a material thing integrator for identifying referents in the surroundings, a figure integrator for ascertaining the participant roles referents should take in described events, a nexus integrator for relating represented events back to the current states in the situation and forward to potential desired states, and a dialogue move integrator for recognising how an utterance moves the dialogue forwards. With this integration mechanism, I achieved 95% task success rate in an evaluation experiment conducted within a simulated apartment and wheelchair viewed from above.doctoral thesis519 512 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Signaling coherence relations in text generation: A case study of German temporal discourse markers(2004-01-12); ; ; This thesis addresses the question of discourse marker choice in automatic (multilingual) text generation (MLG), in particular the issue of signaling temporal coherence relations on the linguistic surface by means of discourse markers such as nachdem, als, bevor . Current text generation systems do not pay attention to the fine-grained differences in meaning (semantic and pragmatic) between similar discourse markers. Yet, choosing the appropriate marker in a given context requires detailed knowledge of the function and form of a wide range of discourse markers, and a generation architecture that integrates discourse marker choice into the overall generation process. This thesis makes contributions to these two distinct areas of research. (1) Linguistic description and representation: The thesis provides a comprehensive analysis of the semantic, pragmatic and syntactic properties of German temporal discourse markers. The results are merged into a functional classification of German temporal conjunctive relations (following the Systemic functional linguistics (SFL) approach to language). This classification is compared to existing accounts for English and Dutch. Further, the thesis addresses the question of the nature of coherence relations and proposes a paradigmatic description of coherence relations along three dimensions (ideation, interpersonal, textual), yielding composite coherence relations. (2) Discourse marker choice in text generation: The thesis proposes a discourse marker lexicon as a generic resource for storing discourse marker meaning and usage, and defines the shape of individual lexicon entries and the global organisation of the lexicon. Sample entries for German and English temporal discourse markers are given. Finally, a computational model for automatic discourse marker choice that exploits the discourse marker lexicon is presenteddoctoral thesis547 477 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, The Filmic Construction of the Figure of the Vampire in Murnau, Lang and Mendez : An Explorative Analysis with Greimasian Semiotics(2017-01-16); ; ; This research seeks to the narrative elements and filmic features which contribute to the construction of the figure of the vampire in Nosferatu, M, El Vampiro and El Ataud del Vampiro through an explorative analysis considering Greimasian theories such as the actantial model and the theory of passions, all of which remain in an early stage in relation to their application to film studies. In this regard, this book is an analysis of a reduced, but culturally important body of research in order to construct a functional methodology to analyze films with Greimasian semiotic concepts considering aesthetics, anthropological and historical sources of the myth of the vampire and cultural and film history of Germany and Mexico. The ensemble of all these elements gives us a more accurate comprehension of the form in which the myth and the figure of the vampire were adapted and (re)constructed in the first vampire films in Germany and Mexico and their influence on subsequent vampire films. Likewise, this analysis will offer us avenues through the application of an interdisciplinary study, as we propose, with a special focus on Greimasian semiotics so as to understand how characters are configured in film.doctoral thesis659 606 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Referring Expression Generation in Situated Interaction(2017-07-07); ; ; While most current frameworks for reference handling are based on binary truth-theoretic knowledge representation, in this thesis I argue for a perspective on reference which emphasises the collaborative nature of reference. I present the Probabilistic Reference And GRounding mechanism (PRAGR) which uses flexible concept assignment based on vague property models and situational context in order to maximise the chance of communicative success. I demonstrate that PRAGR is capable of dealing with several property domains with different internal structures, such as graded adjectives, colour, shape, projective terms, and projective regions. Further, I show that PRAGR is fit to handle in an integrated fashion the most relevant challenges of Referring Expression Generation, in particular graded properties, spatial relations, and salience effects. In three empirical evaluation studies, I demonstrate the usefulness of PRAGR for situated referential communication.doctoral thesis433 277