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Haoyu He

18 accepted papers

2026

An Empirical Study on How Video-LLMs Answer Video Questions

CVPR 2026

Taking advantage of large-scale data and pretrained language models, Video Large Language Models (Video-LLMs) have shown strong capabilities in answering video questions. However, most existing efforts focus on improving performance, with limited attention to understanding their internal mechanisms.

Cited by 0SourceScholar
2026

Progressive Graph Structure Adjustment for Homophily Shift Adaptation

ICML 2026spotlight

We propose *Progressive Structure Adjustment for Homophily Shift* (*PSAHS*), a lightweight method for *Graph Domain Adaptation* (*GDA*) that explicitly addresses cross-domain mismatch in node-level homophily. PSAHS enhances node homophily in the source graph to a prescribed level by reweighting edge…

Cited by 0SourceScholar
2025

Circumventing Backdoor Space via Weight Symmetry

ICML 2025poster

Deep neural networks are vulnerable to backdoor attacks, where malicious behaviors are implanted during training. While existing defenses can effectively purify compromised models, they typically require labeled data or specific training procedures, making them difficult to apply beyond supervised l…

2025

LossControl: Defending Membership Inference Attacks by Controlling the Loss

ICASSP 2025accepted

Machine learning models are vulnerable to membership inference attacks (MIAs), where adversaries attempt to predict whether specific samples are part of the model’s training set. Previous studies have demonstrated a strong correlation between the distinguishability of training and testing loss distr…

Cited by 0SourceScholar
2025

RHYTHM: Reasoning with Hierarchical Temporal Tokenization for Human Mobility

NeurIPS 2025poster

Predicting human mobility is inherently challenging due to complex long-range dependencies and multi-scale periodic behaviors. To address this, we introduce RHYTHM (Reasoning with Hierarchical Temporal Tokenization for Human Mobility), a unified framework that leverages large language models (LLMs)…

Cited by 0SourcecodeScholar
2024

LongVLM: Efficient Long Video Understanding via Large Language Models

ECCV 2024oral

"Empowered by Large Language Models (LLMs), recent advancements in Video-based LLMs (VideoLLMs) have driven progress in various video understanding tasks. These models encode video representations through pooling or query aggregation over a vast number of visual tokens, making computational and memo…

2024

NN4SysBench: Characterizing Neural Network Verification for Computer Systems

NeurIPS 2024poster

We present NN4SysBench, a benchmark suite for neural network verification that is composed of applications from the domain of computer systems. We call these neural networks for computer systems or NN4Sys. NN4Sys is booming: there are many proposals for using neural networks in computer systems—for…

2023

A Survey on Efficient Training of Transformers

IJCAI 2023poster

Recent advances in Transformers have come with a huge requirement on computing resources, highlighting the importance of developing efficient training techniques to make Transformer training faster, at lower cost, and to higher accuracy by the efficient use of computation and memory resources. This…

2023

Dynamic Focus-Aware Positional Queries for Semantic Segmentation

CVPR 2023poster

The DETR-like segmentors have underpinned the most recent breakthroughs in semantic segmentation, which end-to-end train a set of queries representing the class prototypes or target segments. Recently, masked attention is proposed to restrict each query to only attend to the foreground regions predi…

2023

Mask Propagation for Efficient Video Semantic Segmentation

NeurIPS 2023poster

Video Semantic Segmentation (VSS) involves assigning a semantic label to each pixel in a video sequence. Prior work in this field has demonstrated promising results by extending image semantic segmentation models to exploit temporal relationships across video frames; however, these approaches often…

2023

Sensitivity-Aware Visual Parameter-Efficient Fine-Tuning

ICCV 2023oral

Visual Parameter-Efficient Fine-Tuning (PEFT) has become a powerful alternative for full fine-tuning so as to adapt pre-trained vision models to downstream tasks, which only tunes a small number of parameters while freezing the vast majority ones to ease storage burden and optimization difficulty. H…

Cited by 63PDFcodeScholar
2022

EcoFormer: Energy-Saving Attention with Linear Complexity

NeurIPS 2022accept

Transformer is a transformative framework for deep learning which models sequential data and has achieved remarkable performance on a wide range of tasks, but with high computational and energy cost. To improve its efficiency, a popular choice is to compress the models via binarization which constra…

2022

Less Is More: Pay Less Attention in Vision Transformers

AAAI 2022technical

Transformers have become one of the dominant architectures in deep learning, particularly as a powerful alternative to convolutional neural networks (CNNs) in computer vision. However, Transformer training and inference in previous works can be prohibitively expensive due to the quadratic complexity…

2021

Scalable Vision Transformers With Hierarchical Pooling

ICCV 2021poster

The recently proposed Visual image Transformers (ViT) with pure attention have achieved promising performance on image recognition tasks, such as image classification. However, the routine of the current ViT model is to maintain a full-length patch sequence during inference, which is redundant and l…

Cited by 186PDFcodeScholar