Papers by Nikolaos Malandrakis
Multi-User MultiWOZ: Task-Oriented Dialogues among Multiple Users (2023.findings-emnlp)
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Yohan Jo, Xinyan Zhao, Arijit Biswas, Nikoletta Basiou, Vincent Auvray, Nikolaos Malandrakis, Angeliki Metallinou, Alexandros Potamianos
| Challenge: | a dataset of task-oriented dialogues assume conversations between the agent and one user at a time . but multi-user task-orientated dialogues are richer, containing deliberation and deliberations . a novel task is proposed to rewrite a task-focused query that retains only task-relevant information . |
| Approach: | They propose to rewrite a task-oriented chat between two users as a concise task-orientated query that retains only task-relevant information and is directly consumable by the dialogue system. |
| Outcome: | The proposed method surpasses existing models on multi-user dialogues and generalizes to unseen domains. |
Controlled Text Generation for Data Augmentation in Intelligent Artificial Agents (D19-56)
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| Challenge: | Data availability is a bottleneck during early stages of development of new capabilities for intelligent artificial agents. |
| Approach: | They propose to use conditional variational auto-encoders to augment training data of a popular commercial artificial agent with a small set of phrase templates to generate new semantically similar phrases. |
| Outcome: | The proposed approach outperforms the previous controlled text generation techniques with limited data and significantly outperformed the previous methods. |