← Search

Lei Meng

27 accepted papers

2026

A Consensus Anchor-guided Hypergraph Framework For Incomplete Multi-view Clustering

ICML 2026poster

Handling large-scale incomplete multi-view data poses a significant challenge in unsupervised representation learning. While anchor-based strategies have alleviated computational burdens, they typically rely on shallow bipartite graphs restricted to pairwise relations, failing to capture complex hig…

Cited by 0SourceScholar
2026

Cross-View Lewis Weight Fusion Empowering Exemplar Replay for Federated Class-Incremental Learning

ICML 2026poster

Federated Class-Incremental Learning (FCIL) aims to continually expand a model’s recognition capacity in a distributed environment, enabling it to learn new classes while retaining knowledge of previously seen ones. Exemplar replay has emerged as a promising strategy owing to its simplicity and effe…

Cited by 0SourceScholar
2026

Dual-stage Contrastive Learning-enhanced Multi-view Variational Clustering

ICML 2026poster

Multi-view clustering aims to obtain a consensus clustering by integrating complementary and consistent information from multiple views. However, two critical challenges still exist in variational methods: (1) view heterogeneity and noise often make fusion unreliable; (2) ambiguous posteriors and mi…

Cited by 0SourceScholar
2026

Explicit Modeling of Causal Factors and Confounders for Image Classification

AAAI 2026technical

Causal inference has emerged as a promising approach for identifying decisive semantic factors and eliminating spurious correlations in visual representation learning. However, most existing methods rely on latent, data-driven confounder modeling, normally attributing the source of bias to backgroun

Cited by 0SourcePDFScholar
2026

From Selection to Scheduling: Federated Geometry-Aware Correction Makes Exemplar Replay Work Better under Continual Dynamic Heterogeneity

CVPR 2026

Exemplar replay has become an effective strategy for mitigating catastrophic forgetting in federated continual learning (FCL) by retaining representative samples from past tasks. Existing studies focus on designing sample-importance estimation mechanisms to identify information-rich samples. However

Cited by 0SourceScholar
2026

Introducing Decomposed Causality with Spatiotemporal Object-Centric Representation for Video Classification

AAAI 2026technical

Video classification requires event-level representations of objects and their interactions. Existing methods typically rely on data-driven approaches, which either learn such features from whole frames or object-centric visual regions. Therefore, the modeling of spatiotemporal interactions among ob

Cited by 0SourcePDFScholar
2026

Reliable Neighborhood-Aware Multi-View Outlier Detection

ICML 2026poster

In recent years, multi-view outlier detection (MVOD) has gained increasing attention, with the primary objective of recovering the underlying structure of normal data from outlier-contaminated multi-view datasets. However, this objective is hindered by two fundamental challenges:(i) outlier propagat…

Cited by 0SourceScholar
2025

Accelerating Inference of Retrieval-Augmented Generation via Sparse Context Selection

ICLR 2025poster

Large language models (LLMs) augmented with retrieval exhibit robust performance and extensive versatility by incorporating external contexts. However, the input length grows linearly in the number of retrieved documents, causing a dramatic increase in latency. In this paper, we propose a novel para…

Cited by 16SourcePDFScholar
2025

Causal Inference over Visual-Semantic-Aligned Graph for Image Classification

AAAI 2025technical

Incorporating tagging information to regularize the representation learning of images usually leads to improved performance in image classification by aligning the visual features with the textual ones of higher discriminative power. Existing methods typically follow the predictive approach, which u…

Cited by 0SourcePDFScholar
2025

Class-wise Balancing Data Replay for Federated Class-Incremental Learning

NeurIPS 2025oral

Federated Class Incremental Learning (FCIL) aims to collaboratively process continuously increasing incoming tasks across multiple clients. Among various approaches, data replay has become a promising solution, which can alleviate forgetting by reintroducing representative samples from previous task…

Cited by 0SourceScholar
2025

Cross-Silo Feature Space Alignment for Federated Learning on Clients with Imbalanced Data

AAAI 2025technical

Data imbalance across clients in federated learning often leads to different local feature space partitions, harming the global model's generalization ability. Existing methods either employ knowledge distillation to guide consistent local training or performs procedures to calibrate local models be…

2025

Curriculum Conditioned Diffusion for Multimodal Recommendation

AAAI 2025technical

Multimodal recommendation (MMRec) aims to integrate multimodal information of items to address the inherent data sparsity issue in collaborative-based recommendation. Traditional MMRec methods typically capture the structure-level item representations from the observed user behaviors within the mult…

Cited by 1SourcePDFScholar
2025

Empowering Vision Transformers with Multi-Scale Causal Intervention for Long-Tailed Image Classification

IJCAI 2025

Causal inference has emerged as a promising approach to mitigate long-tail classification by handling the biases introduced by class imbalance. However, along with the change of advanced backbone models from Convolutional Neural Networks (CNNs) to Visual Transformers (ViT), existing causal models ma

Cited by 0SourcePDFScholar
2025

Federated Deconfounding and Debiasing Learning for Out-of-Distribution Generalization

IJCAI 2025

Attribute bias in federated learning (FL) typically leads local models to optimize inconsistently due to the learning of non-causal associations, resulting degraded performance. Existing methods either use data augmentation for increasing sample diversity or knowledge distillation for learning invar

Cited by 0SourcePDFScholar
2025

Federated Incomplete Multi-view Clustering with Globally Fused Graph Guidance

ICML 2025poster

Federated multi-view clustering has been proposed to mine the valuable information within multi-view data distributed across different devices and has achieved impressive results while preserving the privacy. Despite great progress, most federated multi-view clustering methods only used global pseu…

2025

Global Prompt Refinement with Non-Interfering Attention Masking for One-Shot Federated Learning

NeurIPS 2025poster

Federated Prompt Learning (FPL) enables communication-efficient adaptation by tuning lightweight prompts on top of frozen pre-trained models. Existing FPL methods typically rely on global information, which is only available after the second training round, to facilitate collaboration among client m…

Cited by 0SourceScholar
2025

Hierarchically-Structured Open-Vocabulary Indoor Scene Synthesis with Pre-trained Large Language Model

AAAI 2025technical

Indoor scene synthesis aims to automatically produce plausible, realistic, and diverse 3D indoor scenes, especially given arbitrary user requirements. Recently, the promising generalization ability of pre-trained large language models (LLM) assist in open-vocabulary indoor scene synthesis. However,…

Cited by 0SourcePDFScholar
2025

IMM-MOT: A Novel 3D Multi-object Tracking Framework with Interacting Multiple Model Filter

IROS 2025

3D Multi-Object Tracking (MOT) provides the trajectories of surrounding objects, assisting robots or vehicles in smarter path planning and obstacle avoidance. Existing 3D MOT methods based on the Tracking-by-Detection framework typically use a single motion model to track an object throughout its en

Cited by 1SourcecodeScholar
2025

Semantic-Space-Intervened Diffusive Alignment for Visual Classification

IJCAI 2025

Cross-modal alignment is an effective approach to improving visual classification. Existing studies typically enforce a one-step mapping that uses deep neural networks to project the visual features to mimic the distribution of textual features. However, they typically face difficulties in finding s

Cited by 0SourcePDFScholar
2024

Enhancing Reinforcement Learning with Dense Rewards from Language Model Critic

EMNLP 2024main

Reinforcement learning (RL) can align language models with non-differentiable reward signals, such as human preferences. However, a major challenge arises from the sparsity of these reward signals - typically, there is only a single reward for an entire output. This sparsity of rewards can lead to i…

Cited by 9SourcePDFScholar
2024

Fusion-Eval: Integrating Assistant Evaluators with LLMs

EMNLP 2024industry

Evaluating natural language generation (NLG) systems automatically poses significant challenges.Recent studies have employed large language models (LLMs) as reference-free metrics for NLG evaluation, enhancing adaptability to new tasks tasks. However, these methods still show lower correspondence wi…

2024

Plug-In Diffusion Model for Sequential Recommendation

AAAI 2024technical

Pioneering efforts have verified the effectiveness of the diffusion models in exploring the informative uncertainty for recommendation. Considering the difference between recommendation and image synthesis tasks, existing methods have undertaken tailored refinements to the diffusion and reverse proc…

2024

Proofread: Fixes All Errors with One Tap

ACL 2024system demonstrations

The impressive capabilities in Large Language Models (LLMs) provide a powerful approach to reimagine users’ typing experience. This paper demonstrates the Proofread feature in Gboard, a virtual keyboard running on mobile phones. Proofread enables seamless sentence-level and paragraph-level correctio…

Cited by 4SourcePDFScholar
2024

RewriteLM: An Instruction-Tuned Large Language Model for Text Rewriting

AAAI 2024technical

Large Language Models (LLMs) have demonstrated impressive capabilities in creative tasks such as storytelling and E-mail generation. However, as LLMs are primarily trained on final text results rather than intermediate revisions, it might be challenging for them to perform text rewriting tasks. Mos…

2024

SeeDRec: Sememe-based Diffusion for Sequential Recommendation

IJCAI 2024poster

Inspired by the power of Diffusion Models (DM) verified in various fields, some pioneering works have started to explore DM in recommendation. However, these prevailing endeavors commonly implement diffusion on item indices, leading to the increasing time complexity, the lack of transferability, and…

2024

Towards an On-device Agent for Text Rewriting

NAACL 2024findings

Large Language Models (LLMs) have demonstrated impressive capabilities for text rewriting. However creating a smaller yet potent language model for text rewriting presents two formidable challenges: costly data collection and absence of emergent capabilities.In this paper we present solutions to add…

Cited by 11SourcePDFScholar
2023

Compositional Zero-Shot Artistic Font Synthesis

IJCAI 2023poster

Recently, many researchers have made remarkable achievements in the field of artistic font synthesis, with impressive glyph style and effect style in the results. However, due to less exploration in style disentanglement, it is difficult for existing methods to envision a kind of unseen style (glyph…