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Prompt learning has emerged as a valuable technique in enhancing vision-language models (VLMs) such as CLIP for downstream tasks in specific domains. Existing work mainly focuses on designing various learning forms of prompts, neglecting…

计算机视觉与模式识别 · 计算机科学 2024-08-14 Zheng Li , Xiang Li , Xinyi Fu , Xin Zhang , Weiqiang Wang , Shuo Chen , Jian Yang

Knowledge Distillation (KD) is a promising approach for unsupervised Anomaly Detection (AD). However, the student network's over-generalization often diminishes the crucial representation differences between teacher and student in anomalous…

计算机视觉与模式识别 · 计算机科学 2024-12-11 Xinyue Liu , Jianyuan Wang , Biao Leng , Shuo Zhang

Graph representations offer powerful and intuitive ways to describe data in a multitude of application domains. Here, we consider stochastic processes generating graphs and propose a methodology for detecting changes in stationarity of such…

机器学习 · 计算机科学 2021-02-11 Daniele Zambon , Cesare Alippi , Lorenzo Livi

Anomaly detection (AD) has attracted considerable attention in both academia and industry. Due to the lack of anomalous data in many practical cases, AD is usually solved by first modeling the normal data pattern and then determining if…

机器学习 · 计算机科学 2022-11-17 Jingxuan Pang , Chunguang Li

Detecting whether examples belong to a given in-distribution or are Out-Of-Distribution (OOD) requires identifying features specific to the in-distribution. In the absence of labels, these features can be learned by self-supervised…

人工智能 · 计算机科学 2022-01-19 Nima Rafiee , Rahil Gholamipoorfard , Nikolas Adaloglou , Simon Jaxy , Julius Ramakers , Markus Kollmann

In order to navigate safely and reliably in off-road and unstructured environments, robots must detect anomalies that are out-of-distribution (OOD) with respect to the training data. We present an analysis-by-synthesis approach for…

机器人学 · 计算机科学 2025-05-30 Siddharth Ancha , Sunshine Jiang , Travis Manderson , Laura Brandt , Yilun Du , Philip R. Osteen , Nicholas Roy

Integrating the structural inductive biases of Graph Neural Networks (GNNs) with the global contextual modeling capabilities of Transformers represents a pivotal challenge in graph representation learning. While GNNs excel at capturing…

机器学习 · 计算机科学 2025-03-05 Zhihua Duan , Jialin Wang

With the development of deep convolutional neural networks, medical image segmentation has achieved a series of breakthroughs in recent years. However, the high-performance convolutional neural networks always mean numerous parameters and…

计算机视觉与模式识别 · 计算机科学 2022-08-30 Wenxuan Zou , Muyi Sun

Graph Anomaly Detection (GAD) aims to identify uncommon, deviated, or suspicious objects within graph-structured data. Existing methods generally focus on a single graph object type (node, edge, graph, etc.) and often overlook the inherent…

机器学习 · 计算机科学 2024-11-12 Yiqing Lin , Jianheng Tang , Chenyi Zi , H. Vicky Zhao , Yuan Yao , Jia Li

Graph-based anomaly detection has been widely used for detecting malicious activities in real-world applications. Existing attempts to address this problem have thus far focused on structural feature engineering or learning in the binary…

机器学习 · 计算机科学 2022-08-31 Bo Chen , Jing Zhang , Xiaokang Zhang , Yuxiao Dong , Jian Song , Peng Zhang , Kaibo Xu , Evgeny Kharlamov , Jie Tang

Anomaly detection is widely used to distinguish system anomalies by analyzing the temporal and spatial features of wireless sensor network (WSN) data streams; it is one of critical technique that ensures the reliability of WSNs. Currently,…

机器学习 · 计算机科学 2022-02-23 Qinghao Zhang , Miao Ye , Hongbing Qiu , Yong Wang , Xiaofang Deng

Knowledge distillation has demonstrated encouraging performances in deep model compression. Most existing approaches, however, require massive labeled data to accomplish the knowledge transfer, making the model compression a cumbersome and…

计算机视觉与模式识别 · 计算机科学 2020-12-14 Chengchao Shen , Xinchao Wang , Youtan Yin , Jie Song , Sihui Luo , Mingli Song

Graph Neural Network pretraining is pivotal for leveraging unlabeled graph data. However, generalizing across heterogeneous domains remains a major challenge due to severe distribution shifts. Existing methods primarily focus on…

机器学习 · 计算机科学 2026-04-14 Yang Yan , Qiuyan Wang , Tianjin Huang , Qiudong Yu , Kexin Zhang

In this paper, we propose a new distillation method for extracting knowledge from Large Foundation Models (LFM) into lightweight models, introducing a novel supervision mode that does not require manually annotated data. While LFMs exhibit…

计算机视觉与模式识别 · 计算机科学 2024-08-23 Yijin Xu , Jialun Liu , Hualiang Wei , Wenhui Li

Graph anomaly detection (GAD) has attracted growing interest for its crucial ability to uncover irregular patterns in broad applications. Semi-supervised GAD, which assumes a subset of annotated normal nodes available during training, is…

机器学习 · 计算机科学 2026-02-03 Guolei Zeng , Hezhe Qiao , Guoguo Ai , Jinsong Guo , Guansong Pang

Few-shot anomaly detection (FSAD) aims to detect unseen anomaly regions with the guidance of very few normal support images from the same class. Existing FSAD methods usually find anomalies by directly designing complex text prompts to…

计算机视觉与模式识别 · 计算机科学 2025-04-17 Fenfang Tao , Guo-Sen Xie , Fang Zhao , Xiangbo Shu

Knowledge distillation has been widely used to produce portable and efficient neural networks which can be well applied on edge devices for computer vision tasks. However, almost all top-performing knowledge distillation methods need to…

计算机视觉与模式识别 · 计算机科学 2021-10-06 Haoran Zhao , Xin Sun , Junyu Dong , Hui Yu , Huiyu Zhou

Multimodal data empowers machine learning models to better understand the world from various perspectives. In this work, we study the combination of \emph{text and graph} modalities, a challenging but understudied combination which is…

社会与信息网络 · 计算机科学 2023-07-24 Yuexin Li , Bryan Hooi

The smoothing issue in graph learning leads to indistinguishable node representations, posing significant challenges for graph-related tasks. However, our experiments reveal that this problem can uncover underlying properties of node…

机器学习 · 计算机科学 2024-10-18 Xiangyu Dong , Xingyi Zhang , Yanni Sun , Lei Chen , Mingxuan Yuan , Sibo Wang

In the realm of Adversarial Distillation (AD), strategic and precise knowledge transfer from an adversarially robust teacher model to a less robust student model is paramount. Our Dynamic Guidance Adversarial Distillation (DGAD) framework…

计算机视觉与模式识别 · 计算机科学 2024-09-04 Hyejin Park , Dongbo Min