Mars: Modeling Context & State Representations with Contrastive Learning for End-to-End Task-Oriented Dialog
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Abstract (arXiv)
Traditional end-to-end task-oriented dialog systems first convert dialog context into belief state and action state before generating the system response. The system response performance is significantly affected by the quality of the belief state and action state. We first explore what dialog context representation is beneficial to improving the quality of the belief state and action state, which further enhances the generated response quality. To tackle our exploration, we propose Mars, an end-to-end task-oriented dialog system with two contrastive learning strategies to model the relationship between dialog context and belief/action state representations. Empirical results show dialog context representations, which are more different from semantic state representations, are more conducive to multi-turn task-oriented dialog. Moreover, our proposed Mars achieves state-of-the-art performance on the MultiWOZ 2.0, CamRest676, and CrossWOZ.
Key facts. Cited by 11 papers in the map (data through 7 Oct 2026). Builds on 33 of its 59 references that are in the map. First posted on arXiv 17 Oct 2022.
Builds on
33 of 59 references.
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Built on by
Citing papers per year: 2023: 1; 2024: 3; 2025: 5; 2026: 2.
11 papers.
- 2024MediTOD: An English Dialogue Dataset for Medical History Taking with Comprehensive Annotationscited by 21
- 2023Enhancing Large Language Model Induced Task-Oriented Dialogue Systems Through Look-Forward Motivated Goalscited by 8
- 2025Empowering LLMs in Task-Oriented Dialogues: A Domain-Independent Multi-Agent Framework and Fine-Tuning Strategycited by 3
- 2024TA&AT: Enhancing Task-Oriented Dialog with Turn-Level Auxiliary Tasks and Action-Tree Based Scheduled Samplingcited by 1
- 2024Learning from Relevant Subgoals in Successful Dialogs using Iterative Training for Task-oriented Dialog Systemscited by 1
- 2025CoDial: Interpretable Task-Oriented Dialogue Systems Through Dialogue Flow Alignmentcited by 1
- 2026One Model, Multiple Goals: Adaptive Multi-Objective Learning for E-commerce Dialogue Systemscited by 1
- 2025Spec-TOD: A Specialized Instruction-Tuned LLM Framework for Efficient Task-Oriented Dialogue Systemscited by 0
- 2025Collaborative and Proactive Management of Task-Oriented Conversationscited by 0
- 2025MAC: A Multi-Agent Framework for Interactive User Clarification in Multi-turn Conversationscited by 0
- 2026Extracting Training Dialogue Data from Large Language Model based Task Botscited by 0
- 2026One Model, Multiple Goals: Adaptive Multi-Objective Learning for E-commerce Dialogue Systems8 Jun 2026
- 2026Extracting Training Dialogue Data from Large Language Model based Task Bots2 Mar 2026
- 2025MAC: A Multi-Agent Framework for Interactive User Clarification in Multi-turn Conversations15 Dec 2025
- 2025Collaborative and Proactive Management of Task-Oriented Conversations26 Sep 2025
- 2025Spec-TOD: A Specialized Instruction-Tuned LLM Framework for Efficient Task-Oriented Dialogue Systems7 Jul 2025
- 2025CoDial: Interpretable Task-Oriented Dialogue Systems Through Dialogue Flow Alignment2 Jun 2025
- 2025Empowering LLMs in Task-Oriented Dialogues: A Domain-Independent Multi-Agent Framework and Fine-Tuning Strategy20 May 2025
- 2024Learning from Relevant Subgoals in Successful Dialogs using Iterative Training for Task-oriented Dialog Systems25 Nov 2024
- 2024MediTOD: An English Dialogue Dataset for Medical History Taking with Comprehensive Annotations18 Oct 2024
- 2024TA&AT: Enhancing Task-Oriented Dialog with Turn-Level Auxiliary Tasks and Action-Tree Based Scheduled Sampling28 Jan 2024
- 2023Enhancing Large Language Model Induced Task-Oriented Dialogue Systems Through Look-Forward Motivated Goals16 Sep 2023