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Jun Bai

14 accepted papers

2026

Cross-Modal Unlearning via Influential Neuron Path Editing in Multimodal Large Language Models

AAAI 2026technical

Multimodal Large Language Models (MLLMs) extend foundation models to real-world applications by integrating inputs such as text and vision. However, their broad knowledge capacity raises growing concerns about privacy leakage, toxicity mitigation, and intellectual property violations. Machine Unlear

Cited by 0SourcePDFScholar
2026

Native Parallel Reasoner: Reasoning in Parallelism via Self-Distilled Reinforcement Learning

ICML 2026poster

We introduce **Native Parallel Reasoner (NPR)**, a teacher-free framework that enables Large Language Models (LLMs) to self-evolve genuine parallel reasoning capabilities. NPR transforms the model from sequential emulation to native parallel cognition through three key innovations: 1) a **self-disti…

Cited by 0SourceScholar
2025

CogAtom: From Cognitive Atoms to Olympiad-level Mathematical Reasoning in Large Language Models

EMNLP 2025

Mathematical reasoning poses significant challenges for Large Language Models (LLMs) due to its demand for multi-step reasoning and abstract conceptual integration. While recent test-time scaling techniques rely heavily on high-quality, challenging problems, the scarcity of Olympiad-level math probl

2025

Disentangling Preference Representation and Text Generation for Efficient Individual Preference Alignment

COLING 2025main

Aligning Large Language Models (LLMs) with general human preferences has been proved crucial in improving the interaction quality between LLMs and human. However, human values are inherently diverse among different individuals, making it insufficient to align LLMs solely with general preferences. To…

2025

Reinforced Query Reasoners for Reasoning-intensive Retrieval Tasks

EMNLP 2025

Traditional information retrieval (IR) methods excel at textual and semantic matching but struggle in reasoning-intensive retrieval tasks that require multi-hop inference or complex semantic understanding between queries and documents. One promising solution is to explicitly rewrite or augment queri

2025

Selecting Demonstrations for Many-Shot In-Context Learning via Gradient Matching

ACL 2025finding

In-Context Learning (ICL) empowers Large Language Models (LLMs) for rapid task adaptation without Fine-Tuning (FT), but its reliance on demonstration selection remains a critical challenge. While many-shot ICL shows promising performance through scaled demonstrations, the selection method for many-s…

2025

Understanding and Leveraging the Expert Specialization of Context Faithfulness in Mixture-of-Experts LLMs

EMNLP 2025

Context faithfulness is essential for reliable reasoning in context-dependent scenarios. However, large language models often struggle to ground their outputs in the provided context, resulting in irrelevant responses.Inspired by the emergent expert specialization observed in mixture-of-experts arch

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2024

FedInverse: Evaluating Privacy Leakage in Federated Learning

ICLR 2024poster

Federated Learning (FL) is a distributed machine learning technique where multiple devices (such as smartphones or IoT devices) train a shared global model by using their local data. FL claims that the data privacy of local participants is preserved well because local data will not be shared with ei…

2024

Leveraging Estimated Transferability Over Human Intuition for Model Selection in Text Ranking

EMNLP 2024main

Text ranking has witnessed significant advancements, attributed to the utilization of dual-encoder enhanced by Pre-trained Language Models (PLMs). Given the proliferation of available PLMs, selecting the most effective one for a given dataset has become a non-trivial challenge. As a promising altern…

2023

How to Determine the Most Powerful Pre-trained Language Model without Brute Force Fine-tuning? An Empirical Survey

EMNLP 2023long findings

Transferability estimation has been attached to great attention in the computer vision fields. Researchers try to estimate with low computational cost the performance of a model when transferred from a source task to a given target task. Considering the effectiveness of such estimations, the commun…

Cited by 0SourcecodeScholar
2023

Permutation Invariant Training for Paraphrase Identification

ICASSP 2023accepted

Identifying sentences sharing similar meanings is crucial to speech and text understandings. Although currently popular cross-encoder solutions with pre-trained language models as backbone have achieved remarkable performance, they suffer from the lack of the permutation invariance or symmetry that…

Cited by 0SourceScholar
2022

Improving Variational Autoencoders with Density Gap-based Regularization

NeurIPS 2022accept

Variational autoencoders (VAEs) are one of the most powerful unsupervised learning frameworks in NLP for latent representation learning and latent-directed generation. The classic optimization goal of VAEs is to maximize the Evidence Lower Bound (ELBo), which consists of a conditional likelihood for…

2021

Enhancing Dual-Encoders with Question and Answer Cross-Embeddings for Answer Retrieval

EMNLP 2021finding

Dual-Encoders is a promising mechanism for answer retrieval in question answering (QA) systems. Currently most conventional Dual-Encoders learn the semantic representations of questions and answers merely through matching score. Researchers proposed to introduce the QA interaction features in scorin…

2021

Paragraph Level Multi-Perspective Context Modeling for Question Generation

ICASSP 2021accepted

Proper understanding of paragraph is essential for question generation task since the semantic interaction is complicated among sentences. How to integrate long text paragraph information into question generation is still a challenge. In this research, we proposed a multi-perspective paragraph conte…

Cited by 0SourceScholar