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Automatic summarization systems usually are trained and evaluated in a particular domain with fixed data sets. When such a system is to be applied to slightly different input, labor- and cost-intensive annotations have to be created to retrain the system. We deal with this problem by providing users with a GUI which allows them to correct automatically produced imperfect summaries. The corrected summary in turn is added to the pool of training data. The performance of the system is expected to improve as it adapts to the new domain.
We present an implemented system for the resolution of it, this, and that in transcribed multi-party dialog. The system handles NP-anaphoric as well as discourse-deictic anaphors, i.e. pronouns with VP antecedents. Selectional preferences for NP or VP antecedents are determined on the basis of corpus counts. Our results show that the system performs significantly better than a recency-based baseline.
Lexical resources are often represented in table form, e. g., in relational databases, or represented in specially marked up texts, for example, in document based XML models. This paper describes how it is possible to model lexical structures as graphs and how this model can be used to exploit existing lexical resources and even how different types of lexical resources can be combined.
In this contribution we present some work of the R&D European project “LIRICS” and of the ISO/TC 37/SC 4 committee related to the topic of interoperability and re-use of language resources. We introduce some basic mechanisms of the standardization work in ISO and describe in more details the general approach on how to cope with the annotation of language data within ISO.
This paper aims to address these problems by dealing with theoretical and methodological questions concerning the national effects of the Bologna Process and the role national factors play in determining the impact of these effects. Altogether the purpose of the paper is to serve as a starting point for future research – both as a guide for systematic and comparative empirical work on higher education, but also for further theoretical and methodological reasoning concerning research on (higher) education policy. As higher education research so far particularly lacks an approach allowing for a competitive and systematic falsification of theoretical arguments by clearly indicating testable and specific hypothesis as well as variables behind the research design (Goedegebuure/Vught 1996) we propose to fall back on neighbouring disciplines, namely social science to improve and enhance the analysis (Slaughter 2001: 398; Altbach 2002: 154; Teichler 1996a: 433, 2005: 448). Several strands of research have to be considered – namely literature on Europeanization as well as insights and approaches of studies dealing with cross-national policy convergence. Taking into account the non-obligatory and mainly intergovernmental character of the Bologna Process the main focus of the paper is on factors related to the effects of transnational communication. The inherent goal is to extend the research agenda on higher education (McLendon 2003: 184ff) and to leave behind the restriction of to analyse only a few cases by striving for a research design that allows for systematic testing and sufficient explanations of cross-national policy convergence at the interface between the Bologna Process and domestic factors.
This study investigates the question of whether the processing of complex anaphors require more cognitive effort than the processing of NP-anaphors. Complex anaphors refer to abstract objects which are not introduced as a noun phrase and bring about the creation of a new discourse referent. This creation is called “complexation process”. We describe ERP findings which provide converging support for the assumption that the cognitive cost of this complexation process is higher than the cognitive cost of processing NP-anaphors.
In der natürlichen Sprachverarbeitung haben Frage-Antwort-Systeme in der letzten Dekade stark an Bedeutung gewonnen. Vor allem durch robuste Werkzeuge wie statistische Syntax-Parser und Eigennamenerkenner ist es möglich geworden, linguistisch strukturierte Informationen aus unannotierten Textkorpora zu gewinnen. Zusätzlich werden durch die Text REtrieval Conference (TREC) jährlich Maßstäbe für allgemeine domänen-unabhängige Frage-Antwort-Szenarien definiert. In der Regel funktionieren Frage-Antwort-Systeme nur gut, wenn sie robuste Verfahren für die unterschiedlichen Fragetypen, die in einer Fragemenge vorkommen, implementieren. Ein charakteristischer Fragetyp sind die sogenannten Ereignisfragen. Obwohl Ereignisse schon seit Mitte des vorigen Jahrhunderts in der theoretischen Linguistik, vor allem in der Satzsemantik, Gegenstand intensive Forschung sind, so blieben sie bislang im Bezug auf Frage-Antwort-Systeme weitgehend unerforscht. Deshalb widmet sich diese Diplomarbeit diesem Problem. Ziel dieser Arbeit ist zum Einen eine Charakterisierung von Ereignisstruktur in Frage-Antwort Systemen, die unter Berücksichtigung der theoretischen Linguistik sowie einer Analyse der TREC 2005 Fragemenge entstehen soll. Zum Anderen soll ein Ereignis-basiertes Antwort-Extraktionsverfahren entworfen und implementiert werden, das sich auf den Ergebnissen dieser Analyse stützt. Informationen von diversen linguistischen Ebenen sollen daten-getrieben in einem uniformen Modell integriert werden. Spezielle linguistische Ressourcen, wie z.B. WordNet und Subkategorisierungslexika werden dabei eine zentrale Rolle einnehmen. Ferner soll eine Ereignisstruktur vorgestellt werden, die das Abpassen von Ereignissen unabhängig davon, ob sie von Vollverben oder Nominalisierungen evoziert werden, erlaubt. Mit der Implementierung eines Ereignis-basierten Antwort-Extraktionsmoduls soll letztendlich auch die Frage beantwortet werden, ob eine explizite Ereignismodellierung die Performanz eines Frage-Antwort-Systems verbessern kann.
In this paper, I present some aspects of a youth group’s construction of a communicative style and show how the group’s stylistic repertoire changes over the course of their growing into adulthood. My paper is based on an ethnographic case study of a group of Turkish girls, the ‘Powergirls’, who grew up in a typical Turkish migrant neighborhood in the inner city of Mannheim, Germany. The aim of the case study was, on the basis of biographical interviews with group members and long-term observation of group interactions, to reconstruct the formation of an ethnically defined ‘ghetto’-clique and its style of communication and to describe the group’s development into educated, modern, German-Turkish young women. In this process, a change in the group’s stylistic repertoire could be observed.