Stefan Ultes

Expert Evaluation of a Spoken Dialogue System in a Clinical Operating Room

2018

With the emergence of new technologies, the surgical working environment becomes increasingly complex and comprises many medical devices which have to be monitored and controlled.With the aim of improving productivity and reducing the workload for …

Towards meaningful, grounded conversations with intelligent agents

2020 · arXiv (Cornell University)

As conversational agents become integral parts of many aspects of our lives, current approaches are reaching bottlenecks of performance that require increasing amounts of data or increasingly powerful models. It is also becoming clear that …

System-Initiated Transitions from Chit-Chat to Task-Oriented Dialogues with Transition Info Extractor and Transition Sentence Generator

2023

In this work, we study dialogue scenarios that start from chit-chat but eventually switch to task-related services, and investigate how a unified dialogue model, which can engage in both chit-chat and task-oriented dialogues, takes the …

MultiWOZ - A Large-Scale Multi-Domain Wizard-of-Oz Dataset for Task-Oriented Dialogue Modelling

2018

Paweł Budzianowski, Tsung-Hsien Wen, Bo-Hsiang Tseng, Iñigo Casanueva, Stefan Ultes, Osman Ramadan, Milica Gašić. Proceedings of the 2018 Conference on Empirical Methods in Natural Language Processing. 2018.

Conditional Generation and Snapshot Learning in Neural Dialogue Systems

2016

Tsung-Hsien Wen, Milica Gašić, Nikola Mrkšić, Lina M. Rojas-Barahona, Pei-Hao Su, Stefan Ultes, David Vandyke, Steve Young. Proceedings of the 2016 Conference on Empirical Methods in Natural Language Processing. 2016.

A Network-based End-to-End Trainable Task-oriented Dialogue System

2017

Tsung-Hsien Wen, David Vandyke, Nikola Mrkšić, Milica Gašić, Lina M. Rojas-Barahona, Pei-Hao Su, Stefan Ultes, Steve Young. Proceedings of the 15th Conference of the European Chapter of the Association for Computational Linguistics: Volume 1, Long …