Search Results for author: Xiao-Ming Wu

Found 61 papers, 36 papers with code

A Closer Look at Few-Shot Out-of-Distribution Intent Detection

1 code implementation COLING 2022 Li-Ming Zhan, Haowen Liang, Lu Fan, Xiao-Ming Wu, Albert Y.S. Lam

Comprehensive experiments on three real-world intent detection benchmark datasets demonstrate the high effectiveness of our proposed approach and its great potential in improving state-of-the-art methods for few-shot OOD intent detection.

Intent Detection Task-Oriented Dialogue Systems

VI-OOD: A Unified Representation Learning Framework for Textual Out-of-distribution Detection

2 code implementations9 Apr 2024 Li-Ming Zhan, Bo Liu, Xiao-Ming Wu

Out-of-distribution (OOD) detection plays a crucial role in ensuring the safety and reliability of deep neural networks in various applications.

Out-of-Distribution Detection Out of Distribution (OOD) Detection +4

Multimodal Pretraining, Adaptation, and Generation for Recommendation: A Survey

no code implementations31 Mar 2024 Qijiong Liu, Jieming Zhu, Yanting Yang, Quanyu Dai, Zhaocheng Du, Xiao-Ming Wu, Zhou Zhao, Rui Zhang, Zhenhua Dong

The recent advancements in pretrained multimodal models offer new opportunities and challenges in developing content-aware recommender systems.

Recommendation Systems

Decoy Effect In Search Interaction: Understanding User Behavior and Measuring System Vulnerability

no code implementations27 Mar 2024 Nuo Chen, Jiqun Liu, Hanpei Fang, Yuankai Luo, Tetsuya Sakai, Xiao-Ming Wu

This study examines the decoy effect's underexplored influence on user search interactions and methods for measuring information retrieval (IR) systems' vulnerability to this effect.

Information Retrieval Retrieval

Discrete Semantic Tokenization for Deep CTR Prediction

2 code implementations13 Mar 2024 Qijiong Liu, Hengchang Hu, Jiahao Wu, Jieming Zhu, Min-Yen Kan, Xiao-Ming Wu

Incorporating item content information into click-through rate (CTR) prediction models remains a challenge, especially with the time and space constraints of industrial scenarios.

Click-Through Rate Prediction News Recommendation

Benchmarking News Recommendation in the Era of Green AI

1 code implementation7 Mar 2024 Qijiong Liu, Jieming Zhu, Quanyu Dai, Xiao-Ming Wu

Over recent years, news recommender systems have gained significant attention in both academia and industry, emphasizing the need for a standardized benchmark to evaluate and compare the performance of these systems.

Benchmarking News Recommendation +1

Decoy Effect in Search Interaction: A Pilot Study

no code implementations4 Nov 2023 Nuo Chen, Jiqun Liu, Tetsuya Sakai, Xiao-Ming Wu

In recent years, the influence of cognitive effects and biases on users' thinking, behaving, and decision-making has garnered increasing attention in the field of interactive information retrieval.

Decision Making Information Retrieval +1

EasyGen: Easing Multimodal Generation with a Bidirectional Conditional Diffusion Model and LLMs

1 code implementation13 Oct 2023 Xiangyu Zhao, Bo Liu, Qijiong Liu, Guangyuan Shi, Xiao-Ming Wu

We present EasyGen, an efficient model designed to enhance multimodal understanding and generation by harnessing the capabilities of diffusion models and large language models (LLMs).

multimodal generation Text Generation +1

SEAL: A Framework for Systematic Evaluation of Real-World Super-Resolution

1 code implementation6 Sep 2023 Wenlong Zhang, Xiaohui Li, Xiangyu Chen, Yu Qiao, Xiao-Ming Wu, Chao Dong

In particular, we cluster the extensive degradation space to create a set of representative degradation cases, which serves as a comprehensive test set.

Super-Resolution

DiffuVolume: Diffusion Model for Volume based Stereo Matching

no code implementations30 Aug 2023 Dian Zheng, Xiao-Ming Wu, Zuhao Liu, Jingke Meng, Wei-Shi Zheng

Our method, termed DiffuVolume, considers the diffusion model as a cost volume filter, which will recurrently remove the redundant information from the cost volume.

Stereo Matching Zero-shot Generalization

Only Encode Once: Making Content-based News Recommender Greener

no code implementations27 Aug 2023 Qijiong Liu, Jieming Zhu, Quanyu Dai, Xiao-Ming Wu

Large pretrained language models (PLM) have become de facto news encoders in modern news recommender systems, due to their strong ability in comprehending textual content.

News Recommendation Recommendation Systems +1

How Good Are LLMs at Out-of-Distribution Detection?

1 code implementation20 Aug 2023 Bo Liu, LiMing Zhan, Zexin Lu, Yujie Feng, Lei Xue, Xiao-Ming Wu

Out-of-distribution (OOD) detection plays a vital role in enhancing the reliability of machine learning (ML) models.

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

Estimator Meets Equilibrium Perspective: A Rectified Straight Through Estimator for Binary Neural Networks Training

1 code implementation ICCV 2023 Xiao-Ming Wu, Dian Zheng, Zuhao Liu, Wei-Shi Zheng

The pioneering work BinaryConnect uses Straight Through Estimator (STE) to mimic the gradients of the sign function, but it also causes the crucial inconsistency problem.

Binarization

Neighborhood-based Hard Negative Mining for Sequential Recommendation

1 code implementation12 Jun 2023 Lu Fan, Jiashu Pu, Rongsheng Zhang, Xiao-Ming Wu

Motivated by this observation, we propose a Graph-based Negative sampling approach based on Neighborhood Overlap (GNNO) to exploit structural information hidden in user behaviors for negative mining.

Sequential Recommendation

Multi-modal Pre-training for Medical Vision-language Understanding and Generation: An Empirical Study with A New Benchmark

1 code implementation10 Jun 2023 Li Xu, Bo Liu, Ameer Hamza Khan, Lu Fan, Xiao-Ming Wu

With the availability of large-scale, comprehensive, and general-purpose vision-language (VL) datasets such as MSCOCO, vision-language pre-training (VLP) has become an active area of research and proven to be effective for various VL tasks such as visual-question answering.

Medical Report Generation Question Answering +3

Revisit Few-shot Intent Classification with PLMs: Direct Fine-tuning vs. Continual Pre-training

1 code implementation8 Jun 2023 Haode Zhang, Haowen Liang, LiMing Zhan, Xiao-Ming Wu, Albert Y. S. Lam

We consider the task of few-shot intent detection, which involves training a deep learning model to classify utterances based on their underlying intents using only a small amount of labeled data.

intent-classification Intent Classification +2

ONCE: Boosting Content-based Recommendation with Both Open- and Closed-source Large Language Models

3 code implementations11 May 2023 Qijiong Liu, Nuo Chen, Tetsuya Sakai, Xiao-Ming Wu

Personalized content-based recommender systems have become indispensable tools for users to navigate through the vast amount of content available on platforms like daily news websites and book recommendation services.

Navigate News Generation +3

Continual Graph Convolutional Network for Text Classification

no code implementations9 Apr 2023 Tiandeng Wu, Qijiong Liu, Yi Cao, Yao Huang, Xiao-Ming Wu, Jiandong Ding

Graph convolutional network (GCN) has been successfully applied to capture global non-consecutive and long-distance semantic information for text classification.

Contrastive Learning text-classification +1

FANS: Fast Non-Autoregressive Sequence Generation for Item List Continuation

1 code implementation2 Apr 2023 Qijiong Liu, Jieming Zhu, Jiahao Wu, Tiandeng Wu, Zhenhua Dong, Xiao-Ming Wu

Item list continuation is proposed to model the overall trend of a list and predict subsequent items.

Boosting Few-Shot Text Classification via Distribution Estimation

no code implementations26 Mar 2023 Han Liu, Feng Zhang, Xiaotong Zhang, Siyang Zhao, Fenglong Ma, Xiao-Ming Wu, Hongyang Chen, Hong Yu, Xianchao Zhang

Distribution estimation has been demonstrated as one of the most effective approaches in dealing with few-shot image classification, as the low-level patterns and underlying representations can be easily transferred across different tasks in computer vision domain.

Few-Shot Image Classification Few-Shot Text Classification +1

SelfPromer: Self-Prompt Dehazing Transformers with Depth-Consistency

1 code implementation13 Mar 2023 Cong Wang, Jinshan Pan, WanYu Lin, Jiangxin Dong, Xiao-Ming Wu

For this purpose, we develop a prompt based on the features of depth differences between the hazy input images and corresponding clear counterparts that can guide dehazing models for better restoration.

Image Dehazing Image Generation

Recon: Reducing Conflicting Gradients from the Root for Multi-Task Learning

1 code implementation22 Feb 2023 Guangyuan Shi, Qimai Li, Wenlong Zhang, Jiaxin Chen, Xiao-Ming Wu

Our experiments show that such a simple approach can greatly reduce the occurrence of conflicting gradients in the remaining shared layers and achieve better performance, with only a slight increase in model parameters in many cases.

Multi-Task Learning

Simple yet Effective Gradient-Free Graph Convolutional Networks

no code implementations1 Feb 2023 Yulin Zhu, Xing Ai, Qimai Li, Xiao-Ming Wu, Kai Zhou

Linearized Graph Neural Networks (GNNs) have attracted great attention in recent years for graph representation learning.

Graph Representation Learning Node Classification

Generating Anomalies for Video Anomaly Detection With Prompt-Based Feature Mapping

no code implementations CVPR 2023 Zuhao Liu, Xiao-Ming Wu, Dian Zheng, Kun-Yu Lin, Wei-Shi Zheng

There also exists a scene gap between virtual and real scenarios, including scene-specific anomalies (events that are abnormal in one scene but normal in another) and scene-specific attributes, such as the viewpoint of the surveillance camera.

Anomaly Detection In Surveillance Videos Video Anomaly Detection

Structural Prior Guided Generative Adversarial Transformers for Low-Light Image Enhancement

no code implementations16 Jul 2022 Cong Wang, Jinshan Pan, Xiao-Ming Wu

The generator is based on a U-shaped Transformer which is used to explore non-local information for better clear image restoration.

Image Restoration Low-Light Image Enhancement

New Intent Discovery with Pre-training and Contrastive Learning

1 code implementation ACL 2022 Yuwei Zhang, Haode Zhang, Li-Ming Zhan, Xiao-Ming Wu, Albert Y. S. Lam

Existing approaches typically rely on a large amount of labeled utterances and employ pseudo-labeling methods for representation learning and clustering, which are label-intensive, inefficient, and inaccurate.

Clustering Contrastive Learning +3

A Closer Look at Blind Super-Resolution: Degradation Models, Baselines, and Performance Upper Bounds

no code implementations10 May 2022 Wenlong Zhang, Guangyuan Shi, Yihao Liu, Chao Dong, Xiao-Ming Wu

The recently proposed practical degradation model includes a full spectrum of degradation types, but only considers complex cases that use all degradation types in the degradation process, while ignoring many important corner cases that are common in the real world.

Blind Super-Resolution Super-Resolution

Online-updated High-order Collaborative Networks for Single Image Deraining

no code implementations14 Feb 2022 Cong Wang, Jinshan Pan, Xiao-Ming Wu

Most of the existing deep-learning-based methods constrain the network to generate derained images but few of them explore features from intermediate layers, different levels, and different modules which are beneficial for rain streaks removal.

Single Image Deraining Vocal Bursts Intensity Prediction

Modeling User Behavior with Graph Convolution for Personalized Product Search

1 code implementation12 Feb 2022 Fan Lu, Qimai Li, Bo Liu, Xiao-Ming Wu, Xiaotong Zhang, Fuyu Lv, Guli Lin, Sen Li, Taiwei Jin, Keping Yang

Our approach can be seamlessly integrated with existing latent space based methods and be potentially applied in any product retrieval method that uses purchase history to model user preferences.

Learning Semantic Representations Retrieval

Overcoming Catastrophic Forgetting in Incremental Few-Shot Learning by Finding Flat Minima

1 code implementation NeurIPS 2021 Guangyuan Shi, Jiaxin Chen, Wenlong Zhang, Li-Ming Zhan, Xiao-Ming Wu

Our study shows that existing methods severely suffer from catastrophic forgetting, a well-known problem in incremental learning, which is aggravated due to data scarcity and imbalance in the few-shot setting.

Few-Shot Class-Incremental Learning Few-Shot Learning +1

Online Enhanced Semantic Hashing: Towards Effective and Efficient Retrieval for Streaming Multi-Modal Data

1 code implementation9 Sep 2021 Xiao-Ming Wu, Xin Luo, Yu-Wei Zhan, Chen-Lu Ding, Zhen-Duo Chen, Xin-Shun Xu

With the vigorous development of multimedia equipment and applications, efficient retrieval of large-scale multi-modal data has become a trendy research topic.

Retrieval

Adaptation-Agnostic Meta-Training

1 code implementation ICML Workshop AutoML 2021 Jiaxin Chen, Li-Ming Zhan, Xiao-Ming Wu, Fu-Lai Chung

Many meta-learning algorithms can be formulated into an interleaved process, in the sense that task-specific predictors are learned during inner-task adaptation and meta-parameters are updated during meta-update.

Meta-Learning

Embedding-based Product Retrieval in Taobao Search

no code implementations17 Jun 2021 Sen Li, Fuyu Lv, Taiwei Jin, Guli Lin, Keping Yang, Xiaoyi Zeng, Xiao-Ming Wu, Qianli Ma

We evaluate MGDSPR on Taobao Product Search with significant metrics gains observed in offline experiments and online A/B tests.

Open-Ended Question Answering Retrieval

Out-of-Scope Intent Detection with Self-Supervision and Discriminative Training

no code implementations ACL 2021 Li-Ming Zhan, Haowen Liang, Bo Liu, Lu Fan, Xiao-Ming Wu, Albert Y. S. Lam

Since the distribution of outlier utterances is arbitrary and unknown in the training stage, existing methods commonly rely on strong assumptions on data distribution such as mixture of Gaussians to make inference, resulting in either complex multi-step training procedures or hand-crafted rules such as confidence threshold selection for outlier detection.

Intent Detection Outlier Detection +1

A Closer Look at the Training Strategy for Modern Meta-Learning

1 code implementation NeurIPS 2020 Jiaxin Chen, Xiao-Ming Wu, Yanke Li, Qimai Li, Li-Ming Zhan, Fu-Lai Chung

The support/query (S/Q) episodic training strategy has been widely used in modern meta-learning algorithms and is believed to improve their generalization ability to test environments.

Few-Shot Learning

M2GRL: A Multi-task Multi-view Graph Representation Learning Framework for Web-scale Recommender Systems

1 code implementation20 May 2020 Menghan Wang, Yujie Lin, Guli Lin, Keping Yang, Xiao-Ming Wu

Most existing methods can be categorized as \emph{multi-view representation fusion}; they first build one graph and then integrate multi-view data into a single compact representation for each node in the graph.

Graph Representation Learning Inductive Bias +2

Self-Supervised Graph Representation Learning via Global Context Prediction

no code implementations3 Mar 2020 Zhen Peng, Yixiang Dong, Minnan Luo, Xiao-Ming Wu, Qinghua Zheng

To take full advantage of fast-growing unlabeled networked data, this paper introduces a novel self-supervised strategy for graph representation learning by exploiting natural supervision provided by the data itself.

Clustering Graph Representation Learning +2

Variational Metric Scaling for Metric-Based Meta-Learning

1 code implementation26 Dec 2019 Jiaxin Chen, Li-Ming Zhan, Xiao-Ming Wu, Fu-Lai Chung

In this paper, we recast metric-based meta-learning from a Bayesian perspective and develop a variational metric scaling framework for learning a proper metric scaling parameter.

Few-Shot Learning Variational Inference

Reconstructing Capsule Networks for Zero-shot Intent Classification

1 code implementation IJCNLP 2019 Han Liu, Xiaotong Zhang, Lu Fan, Xu Fu, i, Qimai Li, Xiao-Ming Wu, Albert Y. S. Lam

With the burgeoning of conversational AI, existing systems are not capable of handling numerous fast-emerging intents, which motivates zero-shot intent classification.

Classification General Classification +3

Clustering Uncertain Data via Representative Possible Worlds with Consistency Learning

no code implementations27 Sep 2019 Han Liu, Xianchao Zhang, Xiaotong Zhang, Qimai Li, Xiao-Ming Wu

However, there are two issues in existing possible world based algorithms: (1) They rely on all the possible worlds and treat them equally, but some marginal possible worlds may cause negative effects.

Clustering

Dimensionwise Separable 2-D Graph Convolution for Unsupervised and Semi-Supervised Learning on Graphs

1 code implementation26 Sep 2019 Qimai Li, Xiaotong Zhang, Han Liu, Quanyu Dai, Xiao-Ming Wu

Graph convolutional neural networks (GCN) have been the model of choice for graph representation learning, which is mainly due to the effective design of graph convolution that computes the representation of a node by aggregating those of its neighbors.

Attribute Clustering +3

Attributed Graph Learning with 2-D Graph Convolution

no code implementations25 Sep 2019 Qimai Li, Xiaotong Zhang, Han Liu, Xiao-Ming Wu

Graph convolutional neural networks have demonstrated promising performance in attributed graph learning, thanks to the use of graph convolution that effectively combines graph structures and node features for learning node representations.

Attribute Graph Learning +2

Attributed Graph Clustering via Adaptive Graph Convolution

1 code implementation4 Jun 2019 Xiaotong Zhang, Han Liu, Qimai Li, Xiao-Ming Wu

Attributed graph clustering is challenging as it requires joint modelling of graph structures and node attributes.

Clustering Community Detection +1

Label Efficient Semi-Supervised Learning via Graph Filtering

1 code implementation CVPR 2019 Qimai Li, Xiao-Ming Wu, Han Liu, Xiaotong Zhang, Zhichao Guan

However, existing graph-based methods either are limited in their ability to jointly model graph structures and data features, such as the classical label propagation methods, or require a considerable amount of labeled data for training and validation due to high model complexity, such as the recent neural-network-based methods.

General Classification Graph Similarity

New Insights Into Laplacian Similarity Search

no code implementations CVPR 2015 Xiao-Ming Wu, Zhenguo Li, Shih-Fu Chang

Graph-based computer vision applications rely critically on similarity metrics which compute the pairwise similarity between any pair of vertices on graphs.

Image Retrieval Retrieval

Locally Linear Hashing for Extracting Non-Linear Manifolds

no code implementations CVPR 2014 Go Irie, Zhenguo Li, Xiao-Ming Wu, Shih-Fu Chang

Previous efforts in hashing intend to preserve data variance or pairwise affinity, but neither is adequate in capturing the manifold structures hidden in most visual data.

Quantization

Analyzing the Harmonic Structure in Graph-Based Learning

no code implementations NeurIPS 2013 Xiao-Ming Wu, Zhenguo Li, Shih-Fu Chang

We show that either explicitly or implicitly, various well-known graph-based models exhibit a common significant \emph{harmonic} structure in its target function -- the value of a vertex is approximately the weighted average of the values of its adjacent neighbors.

Learning with Partially Absorbing Random Walks

no code implementations NeurIPS 2012 Xiao-Ming Wu, Zhenguo Li, Anthony M. So, John Wright, Shih-Fu Chang

We prove that under proper absorption rates, a random walk starting from a set $\mathcal{S}$ of low conductance will be mostly absorbed in $\mathcal{S}$.

Fast Graph Laplacian Regularized Kernel Learning via Semidefinite–Quadratic–Linear Programming

no code implementations NeurIPS 2009 Xiao-Ming Wu, Anthony M. So, Zhenguo Li, Shuo-Yen R. Li

In this paper, we show that a large class of kernel learning problems can be reformulated as semidefinite-quadratic-linear programs (SQLPs), which only contain a simple positive semidefinite constraint, a second-order cone constraint and a number of linear constraints.

Computational Efficiency Constrained Clustering +1

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