no code implementations • SIGDIAL (ACL) 2022 • Svetlana Stoyanchev, Suraj Pandey, Simon Keizer, Norbert Braunschweiler, Rama Sanand Doddipatla
Based on objective metrics and subjective user ratings, we demonstrate the feasibility of using an unsupervised low latency approach to extend a schema-driven search dialogue system to handle unconstrained user preferences.
no code implementations • 21 Sep 2023 • Norbert Braunschweiler, Rama Doddipatla, Simon Keizer, Svetlana Stoyanchev
Observing that document-grounded response generation via LLMs cannot be adequately assessed by automatic evaluation metrics as they are significantly more verbose, we perform a human evaluation where annotators rate the output of the shared task winning system, the two Chat-GPT variants outputs, and human responses.
no code implementations • 1 Jun 2023 • Simon Keizer, Caroline Dockes, Norbert Braunschweiler, Svetlana Stoyanchev, Rama Doddipatla
Reinforcement learning based dialogue policies are typically trained in interaction with a user simulator.
no code implementations • 14 Apr 2022 • Simon Keizer, Norbert Braunschweiler, Svetlana Stoyanchev, Rama Doddipatla
A major bottleneck for building statistical spoken dialogue systems for new domains and applications is the need for large amounts of training data.
no code implementations • 10 Jan 2022 • Norbert Braunschweiler, Rama Doddipatla, Simon Keizer, Svetlana Stoyanchev
Models trained on mixed corpora can be more stable in mismatched contexts, and the performance reductions range from 1 to 8% when compared with single corpus models in matched conditions.
no code implementations • 9 Nov 2020 • Svetlana Stoyanchev, Simon Keizer, Rama Doddipatla
Utterance interpretation is one of the main functions of a dialogue manager, which is the key component of a dialogue system.
no code implementations • LREC 2020 • Harry Bunt, Volha Petukhova, Emer Gilmartin, Catherine Pelachaud, Alex Fang, Simon Keizer, Laurent Pr{\'e}vot
ISO standard 24617-2 for dialogue act annotation, established in 2012, has in the past few years been used both in corpus annotation and in the design of components for spoken and multimodal dialogue systems.
1 code implementation • WS 2019 • Simon Keizer, Ondřej Dušek, Xingkun Liu, Verena Rieser
We present the first complete spoken dialogue system driven by a multi-dimensional statistical dialogue manager.
1 code implementation • 31 Mar 2018 • Simon Keizer, Verena Rieser
Recent statistical approaches have improved the robustness and scalability of spoken dialogue systems.
no code implementations • EACL 2017 • Simon Keizer, Markus Guhe, Heriberto Cuay{\'a}huitl, Ioannis Efstathiou, Klaus-Peter Engelbrecht, Mihai Dobre, Alex Lascarides, Oliver Lemon
In this paper we present a comparative evaluation of various negotiation strategies within an online version of the game {``}Settlers of Catan{''}.
1 code implementation • 25 Nov 2015 • Heriberto Cuayáhuitl, Simon Keizer, Oliver Lemon
This paper describes a successful application of Deep Reinforcement Learning (DRL) for training intelligent agents with strategic conversational skills, in a situated dialogue setting.