← Search

Hongshen Chen

18 accepted papers

2026

PRM-PBE: Process Reward Model for Reinforcement Learning in Programming-by-Example

ICML 2026poster

Programming-by-Example (PBE), as a typical few-shot inductive reasoning paradigm, aims to synthesize corresponding algorithms from a set of input-output examples. Although Large Language Models (LLMs) have demonstrated strong program synthesis potential, they still remain ineffective when handling c…

Cited by 0SourceScholar
2026

RESTL: Reinforcement Learning Guided by Multi-Aspect Rewards for Signal Temporal Logic Transformation

AAAI 2026technical

Signal Temporal Logic (STL) is a powerful formal language for specifying real-time specifications of Cyber-Physical Systems (CPS). Transforming specifications written in natural language into STL formulas automatically has attracted increasing attention. Existing rule-based methods depend heavily on

Cited by 0SourcePDFScholar
2025

Enhancing Transformation from Natural Language to Signal Temporal Logic Using LLMs with Diverse External Knowledge

ACL 2025finding

Temporal Logic (TL), especially Signal Temporal Logic (STL), enables precise formal specification, making it widely used in cyber-physical systems such as autonomous driving and robotics. Automatically transforming NL into STL is an attractive approach to overcome the limitations of manual transform…

2025

Unraveling the Mystery: Defending Against Jailbreak Attacks Via Unearthing Real Intention

COLING 2025main

As Large Language Models (LLMs) become more advanced, the security risks they pose also increase. Ensuring that LLM behavior aligns with human values, particularly in mitigating jailbreak attacks with elusive and implicit intentions, has become a significant challenge. To address this issue, we prop…

2023

Answering Ambiguous Questions via Iterative Prompting

ACL 2023long

In open-domain question answering, due to the ambiguity of questions, multiple plausible answers may exist. To provide feasible answers to an ambiguous question,one approach is to directly predict all valid answers, but this can struggle with balancing relevance and diversity. An alternative is to g…

2023

Contrastive Learning with Dialogue Attributes for Neural Dialogue Generation

ICASSP 2023accepted

Designing an effective learning method remains a challenge in neural dialogue generation systems as it requires the training objective to well approximate the intrinsic human-preferred dialogue properties. Conventional training approaches such as maximum likelihood estimation focus on modeling gener…

Cited by 0SourceScholar
2022

From spoken dialogue to formal summary: An utterance rewriting for dialogue summarization

NAACL 2022long

Due to the dialogue characteristics of unstructured contexts and multi-parties with first-person perspective, many successful text summarization works have failed when dealing with dialogue summarization. In dialogue summarization task, the input dialogue is usually spoken style with ellipsis and co…

2021

Adaptive Bridge between Training and Inference for Dialogue Generation

EMNLP 2021main

Although exposure bias has been widely studied in some NLP tasks, it faces its unique challenges in dialogue response generation, the representative one-to-various generation scenario. In real human dialogue, there are many appropriate responses for the same context, not only with different expressi…

2021

Augmenting Knowledge-grounded Conversations with Sequential Knowledge Transition

NAACL 2021long

Knowledge data are massive and widespread in the real-world, which can serve as good external sources to enrich conversations. However, in knowledge-grounded conversations, current models still lack the fine-grained control over knowledge selection and integration with dialogues, which finally leads…

2021

CoLV: A Collaborative Latent Variable Model for Knowledge-Grounded Dialogue Generation

EMNLP 2021main

Knowledge-grounded dialogue generation has achieved promising performance with the engagement of external knowledge sources. Typical approaches towards this task usually perform relatively independent two sub-tasks, i.e., knowledge selection and knowledge-aware response generation. In this paper, in…

Cited by 26SourcePDFScholar
2021

Collaborative Group Learning

AAAI 2021technical

Collaborative learning has successfully applied knowledge transfer to guide a pool of small student networks towards robust local minima. However, previous approaches typically struggle with drastically aggravated student homogenization when the number of students rises. In this paper, we propose Co…

2021

FCM: A Fine-grained Comparison Model for Multi-turn Dialogue Reasoning

EMNLP 2021finding

Despite the success of neural dialogue systems in achieving high performance on the leader-board, they cannot meet users’ requirements in practice, due to their poor reasoning skills. The underlying reason is that most neural dialogue models only capture the syntactic and semantic information, but f…

2021

Improving Sequential Recommendation Consistency with Self-Supervised Imitation

IJCAI 2021poster

Most sequential recommendation models capture the features of consecutive items in a user-item interaction history. Though effective, their representation expressiveness is still hindered by the sparse learning signals. As a result, the sequential recommender is prone to make inconsistent prediction…

Cited by 28SourcePDFScholar
2021

Probing Product Description Generation via Posterior Distillation

AAAI 2021technical

In product description generation (PDG), the user-cared aspect is critical for the recommendation system, which can not only improve user's experiences but also obtain more clicks. High-quality customer reviews can be considered as an ideal source to mine user-cared aspects. However, in reality, a l…

2021

Topic-Aware Contrastive Learning for Abstractive Dialogue Summarization

EMNLP 2021finding

Unlike well-structured text, such as news reports and encyclopedia articles, dialogue content often comes from two or more interlocutors, exchanging information with each other. In such a scenario, the topic of a conversation can vary upon progression and the key information for a certain topic is o…

2020

EmpDG: Multi-resolution Interactive Empathetic Dialogue Generation

COLING 2020main

A humanized dialogue system is expected to generate empathetic replies, which should be sensitive to the users’ expressed emotion. The task of empathetic dialogue generation is proposed to address this problem. The essential challenges lie in accurately capturing the nuances of human emotion and con…

2020

Modeling Topical Relevance for Multi-Turn Dialogue Generation

IJCAI 2020poster

Topic drift is a common phenomenon in multi-turn dialogue. Therefore, an ideal dialogue generation models should be able to capture the topic information of each context, detect the relevant context, and produce appropriate responses accordingly. However, existing models usually use word or sentence…