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Pre-trained conversation models (PCMs) have achieved promising progress in recent years. However, existing PCMs for Task-oriented dialog (TOD) are insufficient for capturing the sequential nature of the TOD-related tasks, as well as for…

Computation and Language · Computer Science 2023-10-03 Lucen Zhong , Hengtong Lu , Caixia Yuan , Xiaojie Wang , Jiashen Sun , Ke Zeng , Guanglu Wan

In task-oriented dialogue (ToD), a user holds a conversation with an artificial agent to complete a concrete task. Although this technology represents one of the central objectives of AI and has been the focus of ever more intense research…

Computation and Language · Computer Science 2022-05-27 Evgeniia Razumovskaia , Goran Glavaš , Olga Majewska , Edoardo M. Ponti , Anna Korhonen , Ivan Vulić

Collection of annotated dialogs for training task-oriented dialog systems have been one of the key bottlenecks in improving current models. While dialog response generation has been widely studied on the agent side, it is not evident if…

Computation and Language · Computer Science 2023-10-17 Dustin Axman , Avik Ray , Shubham Garg , Jing Huang

Task-oriented dialogue (TOD) systems facilitate goal-driven interactions between users and machines. While recent advances in deep learning have improved the performance, TOD systems often struggle in low-resource scenarios with limited…

Computation and Language · Computer Science 2025-07-08 Quang-Vinh Nguyen , Quang-Chieu Nguyen , Hoang Pham , Khac-Hoai Nam Bui

Multi-agent collaboration has emerged as a pivotal paradigm for addressing complex, distributed tasks in large language model (LLM)-driven applications. While prior research has focused on high-level architectural frameworks, the granular…

Multiagent Systems · Computer Science 2025-05-20 Haochun Wang , Sendong Zhao , Jingbo Wang , Zewen Qiang , Bing Qin , Ting Liu

Task-oriented dialogue systems aim to help users achieve their goals in specific domains. Recent neural dialogue systems use the entire dialogue history for abundant contextual information accumulated over multiple conversational turns.…

Computation and Language · Computer Science 2021-03-12 Hyunmin Jeon , Gary Geunbae Lee

Recent work has shown that self-supervised dialog-specific pretraining on large conversational datasets yields substantial gains over traditional language modeling (LM) pretraining in downstream task-oriented dialog (TOD). These approaches,…

Computation and Language · Computer Science 2022-05-24 Chia-Chien Hung , Anne Lauscher , Simone Paolo Ponzetto , Goran Glavaš

Traditional end-to-end task-oriented dialogue systems have been built with a modularized design. However, such design often causes misalignment between the agent response and external knowledge, due to inadequate representation of…

Computation and Language · Computer Science 2023-05-24 Qingyang Wu , Deema Alnuhait , Derek Chen , Zhou Yu

Task-oriented dialogue systems are broadly used in virtual assistants and other automated services, providing interfaces between users and machines to facilitate specific tasks. Nowadays, task-oriented dialogue systems have greatly…

Computation and Language · Computer Science 2024-05-17 Ruolin Su , Biing-Hwang Juang

Large Language Models (LLMs) with API-calling capabilities enabled building effective Language Agents (LA), while also revolutionizing the conventional task-oriented dialogue (TOD) paradigm. However, current approaches face a critical…

In Task-Oriented Dialogue (TOD) systems, correctly updating the system's understanding of the user's needs is key to a smooth interaction. Traditionally TOD systems are composed of several modules that interact with one another. While each…

Computation and Language · Computer Science 2023-11-21 Lucas Druart , Léo Jacqmin , Benoît Favre , Lina Maria Rojas-Barahona , Valentin Vielzeuf

Single-agent large language model (LLM) systems struggle to simultaneously support diverse conversational functions and maintain safety in behavioral health communication. We propose a safety-aware, role-orchestrated multi-agent LLM…

Artificial Intelligence · Computer Science 2026-04-02 Ha Na Cho

Task-Oriented Dialogue (TOD) systems assist users in completing tasks through natural language interactions, often relying on a single-layered workflow structure for slot-filling in public tasks, such as hotel bookings. However, in…

Computation and Language · Computer Science 2025-09-09 Lingbo Mo , Shun Jiang , Akash Maharaj , Bernard Hishamunda , Yunyao Li

We propose MADS (Multi-Agent Dialogue Simulation), a scalable framework for generating persuasive multi-turn dialogues via agent self-play. MADS employs three coordinated agents: User Agents designed to simulate diverse persona-driven…

Computation and Language · Computer Science 2025-10-14 Mingjin Li , Yu Liu , Huayi Liu , Xiang Ye , Chao Jiang , Hongguang Zhang , Yu Ruan

Existing dialog system models require extensive human annotations and are difficult to generalize to different tasks. The recent success of large pre-trained language models such as BERT and GPT-2 (Devlin et al., 2019; Radford et al., 2019)…

Computation and Language · Computer Science 2021-04-28 Qingyang Wu , Yichi Zhang , Yu Li , Zhou Yu

Task-oriented dialogue (TOD) systems aim to achieve specific goals through interactive dialogue. Such tasks usually involve following specific workflows, i.e. executing a sequence of actions in a particular order. While prior work has…

Computation and Language · Computer Science 2023-11-15 Do June Min , Paloma Sodhi , Ramya Ramakrishnan

The emergence of instruction-tuned large language models (LLMs) has advanced the field of dialogue systems, enabling both realistic user simulations and robust multi-turn conversational agents. However, existing research often evaluates…

Computation and Language · Computer Science 2025-07-22 Chalamalasetti Kranti , Sherzod Hakimov , David Schlangen

Pre-trained language models have been recently shown to benefit task-oriented dialogue (TOD) systems. Despite their success, existing methods often formulate this task as a cascaded generation problem which can lead to error accumulation…

Computation and Language · Computer Science 2022-03-02 Yixuan Su , Lei Shu , Elman Mansimov , Arshit Gupta , Deng Cai , Yi-An Lai , Yi Zhang

Vision-language model (VLM) based GUI agents show promise for automating complex desktop and mobile tasks, but face significant challenges in applying reinforcement learning (RL): (1) slow multi-turn interactions with GUI environments for…

Task-oriented dialogue (TOD) systems are experiencing a revolution driven by Large Language Models (LLMs), yet the evaluation methodologies for these systems remain insufficient for their growing sophistication. While traditional automatic…

Computation and Language · Computer Science 2025-07-17 Emre Can Acikgoz , Carl Guo , Suvodip Dey , Akul Datta , Takyoung Kim , Gokhan Tur , Dilek Hakkani-Tür