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Qi Qian

31 accepted papers

2026

MMTok: Multimodal Coverage Maximization for Efficient Inference of VLMs

ICLR 2026poster

Vision-Language Models (VLMs) demonstrate impressive performance in understanding visual content with language instruction by converting visual inputs to vision tokens. However, redundancy in vision tokens results in the degenerated inference efficiency of VLMs. While many algorithms have been propo…

Cited by 0SourceScholar
2026

RECAST: Expanding the Boundaries of LLMs' Complex Instruction Following with Multi-Constraint Data

ICLR 2026poster

Large language models (LLMs) are increasingly expected to tackle complex tasks, driven by their expanding applications and users' growing proficiency in crafting sophisticated prompts. However, as the number of explicitly stated requirements increases (particularly more than $10$ constraints), LLMs…

Cited by 0SourceScholar
2026

VideoAuto-R1: Video Auto Reasoning via Thinking Once, Answering Twice

CVPR 2026

Chain-of-thought (CoT) reasoning has emerged as a powerful tool for multimodal large language models on video understanding tasks. However, its necessity and advantages over direct answering remain underexplored. In this paper, we first demonstrate that for RL-trained video models, direct answering

Cited by 0SourceScholar
2025

Enhancing Model Privacy in Federated Learning with Random Masking and Quantization

EMNLP 2025

The primary goal of traditional federated learning is to protect data privacy by enabling distributed edge devices to collaboratively train a shared global model while keeping raw data decentralized at local clients. The rise of large language models (LLMs) has introduced new challenges in distribut

2025

mPLUG-Owl3: Towards Long Image-Sequence Understanding in Multi-Modal Large Language Models

ICLR 2025poster

Multi-modal Large Language Models have demonstrated remarkable capabilities in executing instructions for a variety of single-image tasks. Despite this progress, significant challenges remain in modeling long image sequences. In this work, we introduce the versatile multi-modal large language model,…

2024

Searching for Best Practices in Retrieval-Augmented Generation

EMNLP 2024main

Retrieval-augmented generation (RAG) techniques have proven to be effective in integrating up-to-date information, mitigating hallucinations, and enhancing response quality, particularly in specialized domains. While many RAG approaches have been proposed to enhance large language models through que…

2024

mPLUG-Owl2: Revolutionizing Multi-modal Large Language Model with Modality Collaboration

CVPR 2024highlight

Multi-modal Large Language Models (MLLMs) have demonstrated impressive instruction abilities across various open-ended tasks. However previous methods have primarily focused on enhancing multi-modal capabilities. In this work we introduce a versatile multi-modal large language model mPLUG-Owl2 which…

2023

HiTeA: Hierarchical Temporal-Aware Video-Language Pre-training

ICCV 2023poster

Video-language pre-training has advanced the performance of various downstream video-language tasks. However, most previous methods directly inherit or adapt typical image-language pre-training paradigms to video-language pre-training, thus not fully exploiting the unique characteristic of video, i.…

Cited by 87PDFScholar
2023

Improved Visual Fine-tuning with Natural Language Supervision

ICCV 2023oral

Fine-tuning a visual pre-trained model can leverage the semantic information from large-scale pre-training data and mitigate the over-fitting problem on downstream vision tasks with limited training examples. While the problem of catastrophic forgetting in pre-trained backbone has been extensively s…

Cited by 7PDFcodeScholar
2023

UReader: Universal OCR-free Visually-situated Language Understanding with Multimodal Large Language Model

EMNLP 2023long findings

Text is ubiquitous in our visual world, conveying crucial information, such as in documents, websites, and everyday photographs. In this work, we propose UReader, a first exploration of universal OCR-free visually-situated language understanding based on the Multimodal Large Language Model (MLLM). B…

Cited by 0SourcecodeScholar
2023

mPLUG-2: A Modularized Multi-modal Foundation Model Across Text, Image and Video

ICML 2023poster

Recent years have witnessed a big convergence of language, vision, and multi-modal pretraining. In this work, we present mPLUG-2, a new unified paradigm with modularized design for multi-modal pretraining, which can benefit from modality collaboration while addressing the problem of modality entangl…

2022

Graph Convolution for Re-Ranking in Person Re-Identification

ICASSP 2022accepted

Nowadays, deep learning is widely applied to extract features for similarity computation in person re-identification (re-ID). However, the difference between the training data and testing data makes the performance of learned feature degraded during testing. Hence, re-ranking is proposed to mitigate…

Cited by 0SourceScholar
2022

Improved Fine-Tuning by Better Leveraging Pre-Training Data

NeurIPS 2022accept

As a dominant paradigm, fine-tuning a pre-trained model on the target data is widely used in many deep learning applications, especially for small data sets. However, recent studies have empirically shown that training from scratch has the final performance that is no worse than this pre-training st…

2022

RBGNet: Ray-Based Grouping for 3D Object Detection

CVPR 2022poster

As a fundamental problem in computer vision, 3D object detection is experiencing rapid growth. To extract the point-wise features from the irregularly and sparsely distributed points, previous methods usually take a feature grouping module to aggregate the point features to an object candidate. Howe…

Cited by 75PDFcodeScholar
2022

Unsupervised Visual Representation Learning by Online Constrained K-Means

CVPR 2022poster

Cluster discrimination is an effective pretext task for unsupervised representation learning, which often consists of two phases: clustering and discrimination. Clustering is to assign each instance a pseudo label that will be used to learn representations in discrimination. The main challenge resid…

Cited by 40PDFcodeScholar
2021

Dash: Semi-Supervised Learning with Dynamic Thresholding

ICML 2021oral

While semi-supervised learning (SSL) has received tremendous attentions in many machine learning tasks due to its successful use of unlabeled data, existing SSL algorithms use either all unlabeled examples or the unlabeled examples with a fixed high-confidence prediction during the training progress…

2021

Instant-Teaching: An End-to-End Semi-Supervised Object Detection Framework

CVPR 2021poster

Supervised learning based object detection frameworks demand plenty of laborious manual annotations, which may not be practical in real applications. Semi-supervised object detection (SSOD) can effectively leverage unlabeled data to improve the model performance, which is of great significance for t…

Cited by 254PDFScholar
2021

Zen-NAS: A Zero-Shot NAS for High-Performance Image Recognition

ICCV 2021poster

Accuracy predictor is a key component in Neural Architecture Search (NAS) for ranking architectures. Building a high-quality accuracy predictor usually costs enormous computation. To address this issue, instead of using an accuracy predictor, we propose a novel zero-shot index dubbed Zen-Score to ra…

Cited by 184PDFcodeScholar
2019

SoftTriple Loss: Deep Metric Learning Without Triplet Sampling

ICCV 2019poster

Distance metric learning (DML) is to learn the embeddings where examples from the same class are closer than examples from different classes. It can be cast as an optimization problem with triplet constraints. Due to the vast number of triplet constraints, a sampling strategy is essential for DML. W…

Cited by 497PDFcodeScholar
2018

A Multi-Position Joint Particle Filtering Method for Vehicle Localization in Urban Area

IROS 2018poster

Robust localization is a prerequisite for autonomous vehicles. Traditional visual localization methods like visual odometry suffer error accumulation on long range navigation. In this paper, a flexible road map based probabilistic filtering method is proposed to tackle this problem. To effectively m…

Cited by 5SourceScholar
2015

Fine-Grained Visual Categorization via Multi-Stage Metric Learning

CVPR 2015poster

Fine-grained visual categorization (FGVC) is to categorize objects into subordinate classes instead of basic classes. One major challenge in FGVC is the co-occurrence of two issues: 1) many subordinate classes are highly correlated and are difficult to distinguish, and 2) there exists the large intr…

Cited by 178SourcePDFScholar