Search Results for author: Qi Chen

Found 81 papers, 36 papers with code

Generating Valid and Natural Adversarial Examples with Large Language Models

no code implementations20 Nov 2023 Zimu Wang, Wei Wang, Qi Chen, Qiufeng Wang, Anh Nguyen

Deep learning-based natural language processing (NLP) models, particularly pre-trained language models (PLMs), have been revealed to be vulnerable to adversarial attacks.

Adversarial Attack valid

Zero-Shot Medical Information Retrieval via Knowledge Graph Embedding

no code implementations31 Oct 2023 Yuqi Wang, Zeqiang Wang, Wei Wang, Qi Chen, Kaizhu Huang, Anh Nguyen, Suparna De

In the era of the Internet of Things (IoT), the retrieval of relevant medical information has become essential for efficient clinical decision-making.

Decision Making Information Retrieval +2

Self-Supervised Neuron Segmentation with Multi-Agent Reinforcement Learning

1 code implementation6 Oct 2023 Yinda Chen, Wei Huang, Shenglong Zhou, Qi Chen, Zhiwei Xiong

By extracting semantic information from unlabeled data, self-supervised methods can improve the performance of downstream tasks, among which the mask image model (MIM) has been widely used due to its simplicity and effectiveness in recovering original information from masked images.

Multi-agent Reinforcement Learning reinforcement-learning +2

Model-enhanced Vector Index

1 code implementation NeurIPS 2023 Hailin Zhang, Yujing Wang, Qi Chen, Ruiheng Chang, Ting Zhang, Ziming Miao, Yingyan Hou, Yang Ding, Xupeng Miao, Haonan Wang, Bochen Pang, Yuefeng Zhan, Hao Sun, Weiwei Deng, Qi Zhang, Fan Yang, Xing Xie, Mao Yang, Bin Cui

We empirically show that our model achieves better performance on the commonly used academic benchmarks MSMARCO Passage and Natural Questions, with comparable serving latency to dense retrieval solutions.

Natural Questions Quantization +1

Domain Adaptive Synapse Detection with Weak Point Annotations

no code implementations31 Aug 2023 Qi Chen, Wei Huang, Yueyi Zhang, Zhiwei Xiong

In the second stage, we improve model generalizability on target data by regenerating square masks to get high-quality pseudo labels.


3D-STMN: Dependency-Driven Superpoint-Text Matching Network for End-to-End 3D Referring Expression Segmentation

1 code implementation31 Aug 2023 Changli Wu, Yiwei Ma, Qi Chen, Haowei Wang, Gen Luo, Jiayi Ji, Xiaoshuai Sun

In 3D Referring Expression Segmentation (3D-RES), the earlier approach adopts a two-stage paradigm, extracting segmentation proposals and then matching them with referring expressions.

Navigate Referring Expression +3

Dynamic Strategy Chain: Dynamic Zero-Shot CoT for Long Mental Health Support Generation

no code implementations21 Aug 2023 Qi Chen, Dexi Liu

The combination of chain-of-thought (CoT) prompting and Large Language Models (LLMs) is employed and get the SOTA performance on various NLP tasks, especially on text generation tasks.

Text Generation

Likelihood-Based Text-to-Image Evaluation with Patch-Level Perceptual and Semantic Credit Assignment

1 code implementation16 Aug 2023 Qi Chen, Chaorui Deng, Zixiong Huang, BoWen Zhang, Mingkui Tan, Qi Wu

In this paper, we propose to evaluate text-to-image generation performance by directly estimating the likelihood of the generated images using a pre-trained likelihood-based text-to-image generative model, i. e., a higher likelihood indicates better perceptual quality and better text-image alignment.

Prompt Switch: Efficient CLIP Adaptation for Text-Video Retrieval

1 code implementation ICCV 2023 Chaorui Deng, Qi Chen, Pengda Qin, Da Chen, Qi Wu

In text-video retrieval, recent works have benefited from the powerful learning capabilities of pre-trained text-image foundation models (e. g., CLIP) by adapting them to the video domain.

Retrieval Video Captioning +1

Chinese Financial Text Emotion Mining: GCGTS -- A Character Relationship-based Approach for Simultaneous Aspect-Opinion Pair Extraction

no code implementations4 Aug 2023 Qi Chen, Dexi Liu

This innovative structure reduces the excessive reliance on pre-trained language models and emphasizes the modeling of structure and local relationships, thereby improving the performance of the model on Chinese financial texts.

Extract Aspect Sentiment Analysis

Path Integral Method for Barrier Option Pricing Under Vasicek Model

no code implementations14 Jul 2023 Qi Chen, Chao Guo

Path integral method in quantum theory provides a new thinking for time dependent option pricing.

End-to-End Out-of-distribution Detection with Self-supervised Sampling

no code implementations2 Jul 2023 Sen Pei, Jiaxi Sun, Peng Qin, Qi Chen, Xinglong Wu, Xun Wang

Out-of-distribution (OOD) detection empowers the model trained on the closed set to identify unknown data in the open world.

Out-of-Distribution Detection Out of Distribution (OOD) Detection

Improving Tuning-Free Real Image Editing with Proximal Guidance

1 code implementation8 Jun 2023 Ligong Han, Song Wen, Qi Chen, Zhixing Zhang, Kunpeng Song, Mengwei Ren, Ruijiang Gao, Anastasis Stathopoulos, Xiaoxiao He, Yuxiao Chen, Di Liu, Qilong Zhangli, Jindong Jiang, Zhaoyang Xia, Akash Srivastava, Dimitris Metaxas

Null-text inversion (NTI) optimizes null embeddings to align the reconstruction and inversion trajectories with larger CFG scales, enabling real image editing with cross-attention control.

S4M: Generating Radiology Reports by A Single Model for Multiple Body Parts

1 code implementation26 May 2023 Qi Chen, Yutong Xie, Biao Wu, Minh-Son To, James Ang, Qi Wu

In this paper, we seek to design a report generation model that is able to generate reasonable reports even given different images of various body parts.

Algorithm-Dependent Bounds for Representation Learning of Multi-Source Domain Adaptation

1 code implementation4 Apr 2023 Qi Chen, Mario Marchand

We further provide algorithm-dependent generalization bounds for these two settings, where the generalization is characterized by the mutual information between the parameters and the data.

Domain Adaptation Generalization Bounds +1

DAE-Talker: High Fidelity Speech-Driven Talking Face Generation with Diffusion Autoencoder

no code implementations30 Mar 2023 Chenpeng Du, Qi Chen, Tianyu He, Xu Tan, Xie Chen, Kai Yu, Sheng Zhao, Jiang Bian

Additionally, we propose a novel method for generating continuous video frames with the DDIM image decoder trained on individual frames, eliminating the need for modelling the joint distribution of consecutive frames directly.

Talking Face Generation

IRGen: Generative Modeling for Image Retrieval

1 code implementation17 Mar 2023 Yidan Zhang, Ting Zhang, Dong Chen, Yujing Wang, Qi Chen, Xing Xie, Hao Sun, Weiwei Deng, Qi Zhang, Fan Yang, Mao Yang, Qingmin Liao, Baining Guo

While generative modeling has been ubiquitous in natural language processing and computer vision, its application to image retrieval remains unexplored.

Image Retrieval Retrieval

AutoMatch: A Large-scale Audio Beat Matching Benchmark for Boosting Deep Learning Assistant Video Editing

no code implementations3 Mar 2023 Sen Pei, Jingya Yu, Qi Chen, Wozhou He

In this paper, we investigate a novel and practical problem, namely audio beat matching (ABM), which aims to recommend the proper transition time stamps based on the background music.

Video Editing

SUPS: A Simulated Underground Parking Scenario Dataset for Autonomous Driving

1 code implementation25 Feb 2023 Jiawei Hou, Qi Chen, Yurong Cheng, Guang Chen, xiangyang xue, Taiping Zeng, Jian Pu

However, there is a lack of underground parking scenario datasets with multiple sensors and well-labeled images that support both SLAM tasks and perception tasks, such as semantic segmentation and parking slot detection.

3D Reconstruction Autonomous Driving +4

Path Integral Method for Pricing Proportional Step Double-Barrier Option with Time Dependent Parameters

no code implementations15 Feb 2023 Qi Chen, Chao Guo

Path integral method in quantum mechanics provides a new thinking for barrier option pricing.

GMConv: Modulating Effective Receptive Fields for Convolutional Kernels

no code implementations9 Feb 2023 Qi Chen, Chao Li, Jia Ning, Stephen Lin, Kun He

Inspired by the property that ERFs typically exhibit a Gaussian distribution, we propose a Gaussian Mask convolutional kernel (GMConv) in this work.

Image Classification object-detection +1

Online Loss Function Learning

no code implementations30 Jan 2023 Christian Raymond, Qi Chen, Bing Xue, Mengjie Zhang

Loss function learning is a new meta-learning paradigm that aims to automate the essential task of designing a loss function for a machine learning model.


StrokeGAN+: Few-Shot Semi-Supervised Chinese Font Generation with Stroke Encoding

no code implementations11 Nov 2022 Jinshan Zeng, Yefei Wang, Qi Chen, Yunxin Liu, Mingwen Wang, Yuan YAO

The effectiveness of the proposed model for the zero-shot traditional Chinese font generation is also evaluated in this paper.

Font Generation

On Learning Fairness and Accuracy on Multiple Subgroups

1 code implementation19 Oct 2022 Changjian Shui, Gezheng Xu, Qi Chen, Jiaqi Li, Charles Ling, Tal Arbel, Boyu Wang, Christian Gagné

In the upper-level, the fair predictor is updated to be close to all subgroup specific predictors.


Pareto-aware Neural Architecture Generation for Diverse Computational Budgets

1 code implementation14 Oct 2022 Yong Guo, Yaofo Chen, Yin Zheng, Qi Chen, Peilin Zhao, Jian Chen, Junzhou Huang, Mingkui Tan

More critically, these independent search processes cannot share their learned knowledge (i. e., the distribution of good architectures) with each other and thus often result in limited search results.

Path Integral Method for Floating Barrier Option Pricing

no code implementations26 Sep 2022 Qi Chen, Hong-tao Wang, Chao Guo

Path integral method in quantum mechanics provides a new thinking for barrier option pricing.

Learning Symbolic Model-Agnostic Loss Functions via Meta-Learning

no code implementations19 Sep 2022 Christian Raymond, Qi Chen, Bing Xue, Mengjie Zhang

In this paper, we develop upon the emerging topic of loss function learning, which aims to learn loss functions that significantly improve the performance of the models trained under them.


Learning Distinct and Representative Styles for Image Captioning

1 code implementation17 Sep 2022 Qi Chen, Chaorui Deng, Qi Wu

Our innovative idea is to explore the rich modes in the training caption corpus to learn a set of "mode embeddings", and further use them to control the mode of the generated captions for existing image captioning models.

Image Captioning Word Embeddings

Towards Lightweight Super-Resolution with Dual Regression Learning

1 code implementation16 Jul 2022 Yong Guo, Jingdong Wang, Qi Chen, JieZhang Cao, Zeshuai Deng, Yanwu Xu, Jian Chen, Mingkui Tan

Nevertheless, it is hard for existing model compression methods to accurately identify the redundant components due to the extremely large SR mapping space.

Image Super-Resolution Model Compression +1

Optimization-Induced Graph Implicit Nonlinear Diffusion

1 code implementation29 Jun 2022 Qi Chen, Yifei Wang, Yisen Wang, Jiansheng Yang, Zhouchen Lin

Moreover, we show that the optimization-induced variants of our models can boost the performance and improve training stability and efficiency as well.

Formation Tracking for a Multi-Auv System Based on an Adaptive Sliding Mode Method in the Water Flow Environment

no code implementations9 Jun 2022 Xin Li, Daqi Zhu, Bing Sun, Qi Chen, Wenyang Gan, Zhigang Li

At last, a robust sliding mode controller with continuous model predictive control strategy for the multi-AUV system is developed to achieve leader-follower formation tracking under the presence of bounded flow disturbances, and simulations are implemented to confirm the effectiveness of the proposed method.

A Neural Corpus Indexer for Document Retrieval

1 code implementation6 Jun 2022 Yujing Wang, Yingyan Hou, Haonan Wang, Ziming Miao, Shibin Wu, Hao Sun, Qi Chen, Yuqing Xia, Chengmin Chi, Guoshuai Zhao, Zheng Liu, Xing Xie, Hao Allen Sun, Weiwei Deng, Qi Zhang, Mao Yang

To this end, we propose Neural Corpus Indexer (NCI), a sequence-to-sequence network that generates relevant document identifiers directly for a designated query.

Retrieval TriviaQA

Fair Representation Learning through Implicit Path Alignment

no code implementations26 May 2022 Changjian Shui, Qi Chen, Jiaqi Li, Boyu Wang, Christian Gagné

We consider a fair representation learning perspective, where optimal predictors, on top of the data representation, are ensured to be invariant with respect to different sub-groups.

Fairness Representation Learning

Proposal-free Lidar Panoptic Segmentation with Pillar-level Affinity

no code implementations19 Apr 2022 Qi Chen, Sourabh Vora

We propose a simple yet effective proposal-free architecture for lidar panoptic segmentation.

Classification Clustering +4

Path Integral Method for Proportional Step and Proportional Double-Barrier Step Option Pricing

no code implementations16 Dec 2021 Qi Chen, Chao Guo

Path integral method in quantum mechanics provides a new thinking for barrier option pricing.

PolarStream: Streaming Object Detection and Segmentation with Polar Pillars

no code implementations NeurIPS 2021 Qi Chen, Sourabh Vora, Oscar Beijbom

Recent works recognized lidars as an inherently streaming data source and showed that the end-to-end latency of lidar perception models can be reduced significantly by operating on wedge-shaped point cloud sectors rather then the full point cloud.

object-detection Object Detection

V2C: Visual Voice Cloning

no code implementations CVPR 2022 Qi Chen, Yuanqing Li, Yuankai Qi, Jiaqiu Zhou, Mingkui Tan, Qi Wu

Existing Voice Cloning (VC) tasks aim to convert a paragraph text to a speech with desired voice specified by a reference audio.

Voice Cloning

Tracklet-Switch Adversarial Attack against Pedestrian Multi-Object Tracking Trackers

5 code implementations17 Nov 2021 Delv Lin, Qi Chen, Chengyu Zhou, Kun He

Multi-Object Tracking (MOT) has achieved aggressive progress and derived many excellent deep learning trackers.

Adversarial Attack Multi-Object Tracking +1

PolarStream: Streaming Lidar Object Detection and Segmentation with Polar Pillars

no code implementations14 Jun 2021 Qi Chen, Sourabh Vora, Oscar Beijbom

Recent works recognized lidars as an inherently streaming data source and showed that the end-to-end latency of lidar perception models can be reduced significantly by operating on wedge-shaped point cloud sectors rather then the full point cloud.

LIDAR Semantic Segmentation object-detection +1

Pareto-Frontier-aware Neural Architecture Generation for Diverse Budgets

no code implementations27 Feb 2021 Yong Guo, Yaofo Chen, Yin Zheng, Qi Chen, Peilin Zhao, Jian Chen, Junzhou Huang, Mingkui Tan

To this end, we propose a Pareto-Frontier-aware Neural Architecture Generator (NAG) which takes an arbitrary budget as input and produces the Pareto optimal architecture for the target budget.

Towards Accurate and Compact Architectures via Neural Architecture Transformer

2 code implementations20 Feb 2021 Yong Guo, Yin Zheng, Mingkui Tan, Qi Chen, Zhipeng Li, Jian Chen, Peilin Zhao, Junzhou Huang

To address this issue, we propose a Neural Architecture Transformer++ (NAT++) method which further enlarges the set of candidate transitions to improve the performance of architecture optimization.

Neural Architecture Search valid

StrokeGAN: Reducing Mode Collapse in Chinese Font Generation via Stroke Encoding

1 code implementation16 Dec 2020 Jinshan Zeng, Qi Chen, Yunxin Liu, Mingwen Wang, Yuan YAO

However, these deep generative models may suffer from the mode collapse issue, which significantly degrades the diversity and quality of generated results.

Font Generation

Modular Graph Attention Network for Complex Visual Relational Reasoning

no code implementations22 Nov 2020 Yihan Zheng, Zhiquan Wen, Mingkui Tan, Runhao Zeng, Qi Chen, YaoWei Wang, Qi Wu

Moreover, to capture the complex logic in a query, we construct a relational graph to represent the visual objects and their relationships, and propose a multi-step reasoning method to progressively understand the complex logic.

Graph Attention Question Answering +5

CoFF: Cooperative Spatial Feature Fusion for 3D Object Detection on Autonomous Vehicles

no code implementations24 Sep 2020 Jingda Guo, Dominic Carrillo, Sihai Tang, Qi Chen, Qing Yang, Song Fu, Xi Wang, Nannan Wang, Paparao Palacharla

To reduce the amount of transmitted data, feature map based fusion is recently proposed as a practical solution to cooperative 3D object detection by autonomous vehicles.

3D Object Detection Autonomous Vehicles +1

Beyond $\mathcal{H}$-Divergence: Domain Adaptation Theory With Jensen-Shannon Divergence

no code implementations30 Jul 2020 Changjian Shui, Qi Chen, Jun Wen, Fan Zhou, Christian Gagné, Boyu Wang

We reveal the incoherence between the widely-adopted empirical domain adversarial training and its generally-assumed theoretical counterpart based on $\mathcal{H}$-divergence.

Domain Adaptation Transfer Learning

GLOW : Global Weighted Self-Attention Network for Web Search

1 code implementation10 Jul 2020 Xuan Shan, Chuanjie Liu, Yiqian Xia, Qi Chen, Yusi Zhang, Kaize Ding, Yaobo Liang, Angen Luo, Yuxiang Luo

Deep matching models aim to facilitate search engines retrieving more relevant documents by mapping queries and documents into semantic vectors in the first-stage retrieval.

Document Ranking Information Retrieval +2

DCANet: Learning Connected Attentions for Convolutional Neural Networks

no code implementations9 Jul 2020 Xu Ma, Jingda Guo, Sihai Tang, Zhinan Qiao, Qi Chen, Qing Yang, Song Fu

With DCANet, all attention blocks in a CNN model are trained jointly, which improves the ability of attention learning.

Attention-guided Context Feature Pyramid Network for Object Detection

2 code implementations23 May 2020 Junxu Cao, Qi Chen, Jun Guo, Ruichao Shi

For object detection, how to address the contradictory requirement between feature map resolution and receptive field on high-resolution inputs still remains an open question.

Instance Segmentation object-detection +3

Intelligent Home 3D: Automatic 3D-House Design from Linguistic Descriptions Only

1 code implementation CVPR 2020 Qi Chen, Qi Wu, Rui Tang, Yu-Han Wang, Shuai Wang, Mingkui Tan

To this end, we propose a House Plan Generative Model (HPGM) that first translates the language input to a structural graph representation and then predicts the layout of rooms with a Graph Conditioned Layout Prediction Network (GC LPN) and generates the interior texture with a Language Conditioned Texture GAN (LCT-GAN).

Text to 3D

NAT: Neural Architecture Transformer for Accurate and Compact Architectures

1 code implementation NeurIPS 2019 Yong Guo, Yin Zheng, Mingkui Tan, Qi Chen, Jian Chen, Peilin Zhao, Junzhou Huang

To verify the effectiveness of the proposed strategies, we apply NAT on both hand-crafted architectures and NAS based architectures.

Neural Architecture Search

MonaLog: a Lightweight System for Natural Language Inference Based on Monotonicity

1 code implementation SCiL 2020 Hai Hu, Qi Chen, Kyle Richardson, Atreyee Mukherjee, Lawrence S. Moss, Sandra Kuebler

We present a new logic-based inference engine for natural language inference (NLI) called MonaLog, which is based on natural logic and the monotonicity calculus.

Data Augmentation Natural Language Inference

F-Cooper: Feature based Cooperative Perception for Autonomous Vehicle Edge Computing System Using 3D Point Clouds

1 code implementation13 Sep 2019 Qi Chen

Autonomous vehicles are heavily reliant upon their sensors to perfect the perception of surrounding environments, however, with the current state of technology, the data which a vehicle uses is confined to that from its own sensors.

3D Object Detection Autonomous Driving +3

FPCNet: Fast Pavement Crack Detection Network Based on Encoder-Decoder Architecture

no code implementations4 Jul 2019 Wenjun Liu, Yuchun Huang, Ying Li, Qi Chen

Specifically, we first propose the Multi-Dilation (MD) module, which can synthesize the crack features of multiple context sizes via dilated convolution with multiple rates.

Semi-parametric Bayesian variable selection for gene-environment interactions

3 code implementations3 Jun 2019 Jie Ren, Fei Zhou, Xiaoxi Li, Qi Chen, Hongmei Zhang, Shuangge Ma, Yu Jiang, Cen Wu

Existing Bayesian methods for G$\times$E interaction studies are challenged by the high-dimensional nature of the study and the complexity of environmental influences.


Natural Language Inference with Monotonicity

no code implementations WS 2019 Hai Hu, Qi Chen, Larry Moss

This paper describes a working system which performs natural language inference using polarity-marked parse trees.

Natural Language Inference

Auto-Embedding Generative Adversarial Networks for High Resolution Image Synthesis

1 code implementation27 Mar 2019 Yong Guo, Qi Chen, Jian Chen, Qingyao Wu, Qinfeng Shi, Mingkui Tan

To address this issue, we develop a novel GAN called Auto-Embedding Generative Adversarial Network (AEGAN), which simultaneously encodes the global structure features and captures the fine-grained details.

Image Generation Scene Understanding +1

DUNet: A deformable network for retinal vessel segmentation

no code implementations3 Nov 2018 Qiangguo Jin, Zhaopeng Meng, Tuan D. Pham, Qi Chen, Leyi Wei, Ran Su

Results show that more detailed vessels are extracted by DUNet and it exhibits state-of-the-art performance for retinal vessel segmentation with a global accuracy of 0. 9697/0. 9722/0. 9724 and AUC of 0. 9856/0. 9868/0. 9863 on DRIVE, STARE and CHASE_DB1 respectively.

Retinal Vessel Segmentation Segmentation

Semantic Segmentation for Urban Planning Maps based on U-Net

no code implementations28 Sep 2018 Zhiling Guo, Hiroaki Shengoku, Guangming Wu, Qi Chen, Wei Yuan, Xiaodan Shi, Xiaowei Shao, Yongwei Xu, Ryosuke Shibasaki

The results indicate the proposed method can serve as a viable tool for urban planning map semantic segmentation task with high accuracy and efficiency.

Segmentation Semantic Segmentation +1

Dual Reconstruction Nets for Image Super-Resolution with Gradient Sensitive Loss

no code implementations19 Sep 2018 Yong Guo, Qi Chen, Jian Chen, Junzhou Huang, Yanwu Xu, JieZhang Cao, Peilin Zhao, Mingkui Tan

However, most deep learning methods employ feed-forward architectures, and thus the dependencies between LR and HR images are not fully exploited, leading to limited learning performance.

Image Super-Resolution

SampleAhead: Online Classifier-Sampler Communication for Learning from Synthesized Data

no code implementations1 Apr 2018 Qi Chen, Weichao Qiu, Yi Zhang, Lingxi Xie, Alan Yuille

But, this raises an important problem in active vision: given an {\bf infinite} data space, how to effectively sample a {\bf finite} subset to train a visual classifier?

Classification General Classification

UnrealStereo: Controlling Hazardous Factors to Analyze Stereo Vision

no code implementations14 Dec 2016 Yi Zhang, Weichao Qiu, Qi Chen, Xiaolin Hu, Alan Yuille

We generate a large synthetic image dataset with automatically computed hazardous regions and analyze algorithms on these regions.

Image Generation Test

A Hierarchical Distributed Processing Framework for Big Image Data

no code implementations3 Jul 2016 Le Dong, Zhiyu Lin, Yan Liang, Ling He, Ning Zhang, Qi Chen, Xiaochun Cao, Ebroul lzquierdo

The proposed ICP framework consists of two mechanisms, i. e. SICP (Static ICP) and DICP (Dynamic ICP).

Data classification using the Dempster-Shafer method

no code implementations2 Sep 2014 Qi Chen, Amanda Whitbrook, Uwe Aickelin, Chris Roadknight

In this paper, the Dempster-Shafer method is employed as the theoretical basis for creating data classification systems.

Classification General Classification +1

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