113 research outputs found
A Robust and Efficient Three-Layered Dialogue Component for a Speech-to-Speech Translation System
We present the dialogue component of the speech-to-speech translation system
VERBMOBIL. In contrast to conventional dialogue systems it mediates the
dialogue while processing maximally 50% of the dialogue in depth. Special
requirements like robustness and efficiency lead to a 3-layered hybrid
architecture for the dialogue module, using statistics, an automaton and a
planner. A dialogue memory is constructed incrementally.Comment: Postscript file, compressed and uuencoded, 15 pages, to appear in
Proceedings of EACL-95, Dublin
Some ideas for the automatic acquisition of dialogue structure
We are reporting on some initial results on the automatic acquisition of plan operators for a plan recognizer. The operators are derived from the Verbmobil corpus of negotiation dialogues hand-annotated with dialogue acts. The corpus is pre-classified and a set of plan operators is derived for every class. The plan operators are then tested on a set of unseen data. We also show some initial results
Plan recognition in verbmobil
Verbmobil, a speech to speech translation system, poses new and challenging tasks for a dialogue component. We present a part of the dialogue component of verbmobil: a robust plan recognizer that processes all of the over 200 dialogues of the verbmobil corpus. The recognizer currently handles unexpected sequences of input, and will in the future deal with multiple input, hypotheses, and incomplete input
Hybrid discourse modeling and summarization for a speech-to-speech translation system
The thesis discusses two parts of the speech-to-speech translation system VerbMobil: the dialogue model and one of its applications, multilingual summary generation. In connection with the dialogue model, two topics are of special interest: (a) the use of a default unification operation called overlay as the fundamental operation for dialogue management; and (b) an intentional model that is able to describe intentions in dialogue on five levels in a language-independent way. Besides the actual generation algorithm developed, we present a comprehensive evaluation of the summarization functionality. In addition to precision and recall, a new characterization - confabulation - is defined that provides a more precise understanding of the performance of complex natural language processing systems.Die vorliegende Arbeit behandelt hauptsächlich zwei Themen, die für das VerbMobil-System, ein Übersetzungssystem gesprochener Spontansprache, entwickelt wurden: das Dialogmodell und als Applikation die multilinguale Generierung von Ergebnissprotokollen. Für die Dialogmodellierung sind zwei Themen von besonderem Interesse. Das erste behandelt eine in der vorliegenden Arbeit formalisierte Default-Unifikations-Operation namens Overlay, die als fundamentale Operation für Diskursverarbeitung dient. Das zweite besteht aus einem intentionalen Modell, das Intentionen eines Dialogs auf fünf Ebenen in einer sprachunabhängigen Repräsentation darstellt. Neben dem für die Protokollgenerierung entwickelten Generierungsalgorithmus wird eine umfassende Evaluation zur Protokollgenerierungsfunktionalität vorgestellt. Zusätzlich zu "precision" und "recall" wird ein neues Maß - Konfabulation (Engl.: "confabulation") - vorgestellt, das eine präzisere Charakterisierung der Qualität eines komplexen Sprachverarbeitungssystems ermöglicht
Hybrid discourse modeling and summarization for a speech-to-speech translation system
The thesis discusses two parts of the speech-to-speech translation system VerbMobil: the dialogue model and one of its applications, multilingual summary generation. In connection with the dialogue model, two topics are of special interest: (a) the use of a default unification operation called overlay as the fundamental operation for dialogue management; and (b) an intentional model that is able to describe intentions in dialogue on five levels in a language-independent way. Besides the actual generation algorithm developed, we present a comprehensive evaluation of the summarization functionality. In addition to precision and recall, a new characterization - confabulation - is defined that provides a more precise understanding of the performance of complex natural language processing systems.Die vorliegende Arbeit behandelt hauptsächlich zwei Themen, die für das VerbMobil-System, ein Übersetzungssystem gesprochener Spontansprache, entwickelt wurden: das Dialogmodell und als Applikation die multilinguale Generierung von Ergebnissprotokollen. Für die Dialogmodellierung sind zwei Themen von besonderem Interesse. Das erste behandelt eine in der vorliegenden Arbeit formalisierte Default-Unifikations-Operation namens Overlay, die als fundamentale Operation für Diskursverarbeitung dient. Das zweite besteht aus einem intentionalen Modell, das Intentionen eines Dialogs auf fünf Ebenen in einer sprachunabhängigen Repräsentation darstellt. Neben dem für die Protokollgenerierung entwickelten Generierungsalgorithmus wird eine umfassende Evaluation zur Protokollgenerierungsfunktionalität vorgestellt. Zusätzlich zu "precision" und "recall" wird ein neues Maß - Konfabulation (Engl.: "confabulation") - vorgestellt, das eine präzisere Charakterisierung der Qualität eines komplexen Sprachverarbeitungssystems ermöglicht
The Approach to the Thermodynamic Limit in Lattice QCD at \mu\neq0
The expectation value of the complex phase factor of the fermion determinant
is computed to leading order in the -expansion of the chiral Lagrangian. The
computation is valid for and determines the dependence of the
sign problem on the volume and on the geometric shape of the volume. In the
thermodynamic limit with at fixed temperature , the
average phase factor vanishes. In the low temperature limit where is
fixed as becomes large the average phase factor approaches one. The
results for a finite volume compare well with lattice results obtained by
Allton {\it et al}.. After taking appropriate limits, we reproduce previously
derived results for the -regime and for 1-dimensional QCD. The
distribution of the phase itself is also computed.Comment: 9 pages, 5 figure
Predicting Dementia Screening and Staging Scores From Semantic Verbal Fluency Performance
International audienc
Treatment of incomplete dialogues in a speech-to-speech translation system
For the speech-to-speech translation system verbmobil the dialogue component has the task of providing contextual information for other verbmobil subcomponents and to follow the flow of the dialogue. Since verbmobil operates on demand, only parts of the dialogue are processed using syntactic and semantic knowledge. Therefore, robustness with respect to incomplete structures is a basic requirement. We show the performance of the statistic prediction module and the planning module under such conditions
HUMAN: Hierarchical Universal Modular ANnotator
A lot of real-world phenomena are complex and cannot be captured by single
task annotations. This causes a need for subsequent annotations, with
interdependent questions and answers describing the nature of the subject at
hand. Even in the case a phenomenon is easily captured by a single task, the
high specialisation of most annotation tools can result in having to switch to
another tool if the task only slightly changes.
We introduce HUMAN, a novel web-based annotation tool that addresses the
above problems by a) covering a variety of annotation tasks on both textual and
image data, and b) the usage of an internal deterministic state machine,
allowing the researcher to chain different annotation tasks in an
interdependent manner. Further, the modular nature of the tool makes it easy to
define new annotation tasks and integrate machine learning algorithms e.g., for
active learning. HUMAN comes with an easy-to-use graphical user interface that
simplifies the annotation task and management.Comment: 7 pages, 4 figures, EMNLP - Demonstrations 202
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