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Existing Unsupervised Domain Adaptation (UDA) literature adopts the covariate shift and conditional shift assumptions, which essentially encourage models to learn common features across domains. However, due to the lack of supervision in…

计算机视觉与模式识别 · 计算机科学 2021-07-29 Zhongqi Yue , Qianru Sun , Xian-Sheng Hua , Hanwang Zhang

Pedestrian detection is fundamental to autonomous driving, robotics, and surveillance. Despite progress in deep learning, reliable identification remains challenging due to occlusions, cluttered backgrounds, and degraded visibility. While…

计算机视觉与模式识别 · 计算机科学 2026-04-21 Henry O. Velesaca , Andrea Mero , Guillermo A. Castillo , Angel D. Sappa

Camouflaged scene understanding (CSU) has attracted significant attention due to its broad practical implications. However, in this field, robust image-text cross-modal alignment remains under-explored, hindering deeper understanding of…

计算机视觉与模式识别 · 计算机科学 2026-04-03 Yao Jiang , Zhongkuan Mao , Xuan Wu , Keren Fu , Qijun Zhao

Automated systems that detect deception in high-stakes situations can enhance societal well-being across medical, social work, and legal domains. Existing models for detecting high-stakes deception in videos have been supervised, but…

计算机视觉与模式识别 · 计算机科学 2021-06-22 Leena Mathur , Maja J Matarić

Graph Retrieval-Augmented Generation (GraphRAG) has emerged as a key technique for enhancing Large Language Models (LLMs) with proprietary Knowledge Graphs (KGs) in knowledge-intensive applications. As these KGs often represent an…

密码学与安全 · 计算机科学 2026-01-05 Weijie Wang , Peizhuo Lv , Yan Wang , Rujie Dai , Guokun Xu , Qiujian Lv , Hangcheng Liu , Weiqing Huang , Wei Dong , Jiaheng Zhang

This paper introduces advanced techniques of Topological Data Analysis (TDA) for unsupervised anomaly detection and customer segmentation in banking data. Using the Mapper algorithm and persistent homology, we develop unsupervised…

机器学习 · 计算机科学 2025-08-21 Leonardo Aldo Alejandro Barberi , Linda Maria De Cave

Handwritten signature verification is a crucial aspect of identity authentication, with applications in various domains such as finance and e-commerce. However, achieving high accuracy in signature verification remains challenging due to…

计算机视觉与模式识别 · 计算机科学 2025-10-23 Hai-jie Yuan , Heng Zhang , Fei Yin

Facial Expression Recognition (FER) is an important task in computer vision and has wide applications in human-computer interaction, intelligent security, emotion analysis, and other fields. However, the limited size of FER datasets limits…

计算机视觉与模式识别 · 计算机科学 2023-03-21 Jun Yu , Zhongpeng Cai , Renda Li , Gongpeng Zhao , Guochen Xie , Jichao Zhu , Wangyuan Zhu

Current State-of-the-Art models in Named Entity Recognition (NER) are neural models with a Conditional Random Field (CRF) as the final network layer, and pre-trained "contextual embeddings". The CRF layer is used to facilitate global…

计算与语言 · 计算机科学 2021-03-25 Brian Lester , Daniel Pressel , Amy Hemmeter , Sagnik Ray Choudhury

With the rapid development of social media, the importance of analyzing social network user data has also been put on the agenda. User representation learning in social media is a critical area of research, based on which we can conduct…

社会与信息网络 · 计算机科学 2024-09-06 Zhicheng Ren , Zhiping Xiao , Yizhou Sun

Modern financial electronic exchanges are an exciting and fast-paced marketplace where billions of dollars change hands every day. They are also rife with manipulation and fraud. Detecting such activity is a major undertaking, which has…

机器学习 · 计算机科学 2023-09-04 Timothy DeLise

Graph fraud detection has long depended on Graph Neural Networks (GNNs) to propagate and aggregate information across relational data. A critical obstacle in practice, however, is that fraudsters frequently disguise themselves by forging…

人工智能 · 计算机科学 2026-05-26 Jinsheng Guo , Zhenhao Weng , Yibo Liu , Yan Qiao , Meng Li

Deepfakes are realistic face manipulations that can pose serious threats to security, privacy, and trust. Existing methods mostly treat this task as binary classification, which uses digital labels or mask signals to train the detection…

计算机视觉与模式识别 · 计算机科学 2024-02-08 Ke Sun , Shen Chen , Taiping Yao , Haozhe Yang , Xiaoshuai Sun , Shouhong Ding , Rongrong Ji

Rapid growth of modern technologies such as internet and mobile computing are bringing dramatically increased e-commerce payments, as well as the explosion in transaction fraud. Meanwhile, fraudsters are continually refining their tricks,…

密码学与安全 · 计算机科学 2018-03-20 Xurui Li , Wei Yu , Tianyu Luwang , Jianbin Zheng , Xuetao Qiu , Jintao Zhao , Lei Xia , Yujiao Li

Semi-supervised learning has emerged as a promising approach to tackle the challenge of label scarcity in facial expression recognition (FER) task. However, current state-of-the-art methods primarily focus on one side of the coin, i.e.,…

计算机视觉与模式识别 · 计算机科学 2025-02-04 Fan Zhang , Zhi-Qi Cheng , Jian Zhao , Xiaojiang Peng , Xuelong Li

Recent advances in large-scale text-to-image generation models have led to a surge in subject-driven text-to-image generation, which aims to produce customized images that align with textual descriptions while preserving the identity of…

计算机视觉与模式识别 · 计算机科学 2025-05-29 Kewen Chen , Xiaobin Hu , Wenqi Ren

Partially annotated clips contain rich temporal contexts that can complement the sparse key frame annotations in providing supervision for model training. We present a novel paradigm called Temporally-Adaptive Features (TAF) learning that…

计算机视觉与模式识别 · 计算机科学 2019-05-27 Yongxi Lu , Ziyao Tang , Tara Javidi

Text anomaly detection (TAD) plays a critical role in various language-driven real-world applications, including harmful content moderation, phishing detection, and spam review filtering. While two-step "embedding-detector" TAD methods have…

计算与语言 · 计算机科学 2026-01-27 Yixin Liu , Kehan Yan , Shiyuan Li , Qingfeng Chen , Shirui Pan

Graph anomaly detection (GAD) has garnered increasing attention in recent years, yet remains challenging due to two key factors: (1) label scarcity stemming from the high cost of annotations and (2) homophily disparity at node and class…

机器学习 · 计算机科学 2026-01-30 Yunhui Liu , Jiashun Cheng , Yiqing Lin , Qizhuo Xie , Jia Li , Fugee Tsung , Hongzhi Yin , Tao Zheng , Jianhua Zhao , Tieke He

Credit card fraud has been a persistent issue since the last century, causing significant financial losses to the industry. The most effective way to prevent fraud is by contacting customers to verify suspicious transactions. However, while…

机器学习 · 计算机科学 2026-02-09 Menghao Huo , Kuan Lu , Qiang Zhu , Zhenrui Chen