activity
20132026
most citedChallenges in Representation Learning: A report on three machine learning contests

103 citations · 122 across the 18 of their papers we have counts for

collaborators

19 papers

cs.RO2026

What Makes an Efficient VLA? Navigating Action-Head Design, Scaling, and Latency

Luoyang Sun, Guoyang Xia, Fengfa Li +9

Vision-Language-Action (VLA) models combine a pretrained vision encoder, a language backbone, and an action head, but their relative contribution has not been established under con…

cs.RO2026

VANE: Reliable Test-Time Training for Vision-Language-Action Models via Future Visual Representation Prediction

Hongjin Ji, Guoyang Xia, Luoyang Sun +2

Test-time training (TTT) offers a lightweight way to adapt vision--language--action (VLA) policies from unlabeled deployment streams, but it remains difficult to use reliably in cl…

cs.CV2026

VLAFlow: A Unified Training Framework for Vision-Language-Action Models via Co-training and Future Latent Alignment

Guoyang Xia, Fengfa Li, Hongjin Ji +4

Vision-language-action models (VLAs) have recently advanced robotic manipulation, yet the effects of different robot-data pre-training paradigms remain difficult to compare because…

cs.CV2025

FastMMoE: Accelerating Multimodal Large Language Models through Dynamic Expert Activation and Routing-Aware Token Pruning

Guoyang Xia, Yifeng Ding, Fengfa Li +4

Multimodal large language models (MLLMs) have achieved impressive performance, but high-resolution visual inputs result in long sequences of visual tokens and substantial inference…

cs.CL2025

ChunkLLM: A Lightweight Pluggable Framework for Accelerating LLMs Inference

Haojie Ouyang, Jianwei Lv, Lei Ren +3

Transformer-based large models excel in natural language processing and computer vision, but face severe computational inefficiencies due to the self-attention's quadratic complexi…

cs.CL2025

SMAR: Soft Modality-Aware Routing Strategy for MoE-based Multimodal Large Language Models Preserving Language Capabilities

Guoyang Xia, Yifeng Ding, Fengfa Li +4

Mixture of Experts (MoE) architectures have become a key approach for scaling large language models, with growing interest in extending them to multimodal tasks. Existing methods t…

cs.CV2025

Evaluating MLLMs with Multimodal Multi-image Reasoning Benchmark

Ziming Cheng, Binrui Xu, Lisheng Gong +14

With enhanced capabilities and widespread applications, Multimodal Large Language Models (MLLMs) are increasingly required to process and reason over multiple images simultaneously…

cs.CV2025

FreeGraftor: Training-Free Cross-Image Feature Grafting for Subject-Driven Text-to-Image Generation

Zebin Yao, Lei Ren, Huixing Jiang +4

Subject-driven image generation aims to synthesize novel scenes that faithfully preserve subject identity from reference images while adhering to textual guidance. However, existin…

cs.CV2024★ 1 cited

Concept Conductor: Orchestrating Multiple Personalized Concepts in Text-to-Image Synthesis

Zebin Yao, Fangxiang Feng, Ruifan Li +1

The customization of text-to-image models has seen significant advancements, yet generating multiple personalized concepts remains a challenging task. Current methods struggle with…

cs.CV2024

DiffHarmony: Latent Diffusion Model Meets Image Harmonization

Pengfei Zhou, Fangxiang Feng, Xiaojie Wang

Image harmonization, which involves adjusting the foreground of a composite image to attain a unified visual consistency with the background, can be conceptualized as an image-to-i…

cs.CV2023

Whether you can locate or not? Interactive Referring Expression Generation

Fulong Ye, Yuxing Long, Fangxiang Feng +1

Referring Expression Generation (REG) aims to generate unambiguous Referring Expressions (REs) for objects in a visual scene, with a dual task of Referring Expression Comprehension…

cs.CV2022

GR-GAN: Gradual Refinement Text-to-image Generation

Bo Yang, Fangxiang Feng, Xiaojie Wang

A good Text-to-Image model should not only generate high quality images, but also ensure the consistency between the text and the generated image. Previous models failed to simulta…

cs.CV2022★ 1 cited

Question-Driven Graph Fusion Network For Visual Question Answering

Yuxi Qian, Yuncong Hu, Ruonan Wang +2

Existing Visual Question Answering (VQA) models have explored various visual relationships between objects in the image to answer complex questions, which inevitably introduces irr…

cs.CL2022★ 1 cited

Co-VQA : Answering by Interactive Sub Question Sequence

Ruonan Wang, Yuxi Qian, Fangxiang Feng +2

Most existing approaches to Visual Question Answering (VQA) answer questions directly, however, people usually decompose a complex question into a sequence of simple sub questions…

cs.CV2022★ 1 cited

Spot the Difference: A Cooperative Object-Referring Game in Non-Perfectly Co-Observable Scene

Duo Zheng, Fandong Meng, Qingyi Si +5

Visual dialog has witnessed great progress after introducing various vision-oriented goals into the conversation, especially such as GuessWhich and GuessWhat, where the only image…

cs.CL2021

Multi-stage Pre-training over Simplified Multimodal Pre-training Models

Tongtong Liu, Fangxiang Feng, Xiaojie Wang

Multimodal pre-training models, such as LXMERT, have achieved excellent results in downstream tasks. However, current pre-trained models require large amounts of training data and…

cs.CV2020★ 4 cited

Answer-Driven Visual State Estimator for Goal-Oriented Visual Dialogue

Zipeng Xu, Fangxiang Feng, Xiaojie Wang +3

A goal-oriented visual dialogue involves multi-turn interactions between two agents, Questioner and Oracle. During which, the answer given by Oracle is of great significance, as it…

cs.LG2013★ 11 cited

Constructing Hierarchical Image-tags Bimodal Representations for Word Tags Alternative Choice

Fangxiang Feng, Ruifan Li, Xiaojie Wang

This paper describes our solution to the multi-modal learning challenge of ICML. This solution comprises constructing three-level representations in three consecutive stages and ch…

stat.ML2013★ 103 cited

Challenges in Representation Learning: A report on three machine learning contests

Ian J. Goodfellow, Dumitru Erhan, Pierre Luc Carrier +25

The ICML 2013 Workshop on Challenges in Representation Learning focused on three challenges: the black box learning challenge, the facial expression recognition challenge, and the…