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We propose a novel Conditional Latent space Variational Autoencoder (CL-VAE) to perform improved pre-processing for anomaly detection on data with known inlier classes and unknown outlier classes. This proposed variational autoencoder (VAE)…

机器学习 · 计算机科学 2024-10-17 Oskar Åström , Alexandros Sopasakis

Human face exhibits an inherent hierarchy in its representations (i.e., holistic facial expressions can be encoded via a set of facial action units (AUs) and their intensity). Variational (deep) auto-encoders (VAE) have shown great results…

计算机视觉与模式识别 · 计算机科学 2017-08-08 Dieu Linh Tran , Robert Walecki , Ognjen Rudovic , Stefanos Eleftheriadis , Bjørn Schuller , Maja Pantic

Anomaly detection (AD) plays a pivotal role in AI applications, e.g., in classification, and intrusion/threat detection in cybersecurity. However, most existing methods face challenges of heterogeneity amongst feature subsets posed by…

人工智能 · 计算机科学 2025-01-15 Phai Vu Dinh , Diep N. Nguyen , Dinh Thai Hoang , Quang Uy Nguyen , Eryk Dutkiewicz

Self-Supervised Learning (SSL) has emerged as a key technique in machine learning, tackling challenges such as limited labeled data, high annotation costs, and variable wireless channel conditions. It is essential for developing Channel…

信号处理 · 电气工程与系统科学 2026-01-08 Jun Jiang , Xiaolong Ruan , Shugong Xu

Offline handwritten signature verification systems are used to verify the identity of individuals, through recognizing their handwritten signature image as genuine signatures or forgeries. The main tasks of signature verification systems…

计算机视觉与模式识别 · 计算机科学 2024-10-01 Hansong Zhang , Jiangjian Guo , Kun Li , Yang Zhang , Yimei Zhao

Subtle hand differences make sign language recognition challenging, yet many existing methods rely on encoders pretrained on generic action datasets that poorly capture such fine-grained cues. We propose a self-supervised pretraining method…

计算机视觉与模式识别 · 计算机科学 2026-05-05 Kunyuan Xie , Zhixi Cai , Kalin Stefanov

Accurate and robust prediction of patient's response to drug treatments is critical for developing precision medicine. However, it is often difficult to obtain a sufficient amount of coherent drug response data from patients directly for…

机器学习 · 计算机科学 2021-02-02 Di He , Lei Xie

Anomaly detection (AD) is a fast growing and popular domain among established applications like vision and time series. We observe a rich literature for these applications, but anomaly detection in text is only starting to blossom.…

计算与语言 · 计算机科学 2024-09-19 Jeremie Pantin , Christophe Marsala

Domain shift is a problem commonly encountered when developing automated histopathology pipelines. The performance of machine learning models such as convolutional neural networks within automated histopathology pipelines is often…

图像与视频处理 · 电气工程与系统科学 2021-07-16 Andrew Moyes , Richard Gault , Kun Zhang , Ji Ming , Danny Crookes , Jing Wang

Variational Auto-Encoders (VAEs) are capable of learning latent representations for high dimensional data. However, due to the i.i.d. assumption, VAEs only optimize the singleton variational distributions and fail to account for the…

机器学习 · 计算机科学 2020-04-20 Da Tang , Dawen Liang , Tony Jebara , Nicholas Ruozzi

Interpretability is essential for user trust in real-world anomaly detection applications. However, deep learning models, despite their strong performance, often lack transparency. In this work, we study the interpretability of…

We propose a pre-training strategy called Multi-modal Multi-task Masked Autoencoders (MultiMAE). It differs from standard Masked Autoencoding in two key aspects: I) it can optionally accept additional modalities of information in the input…

计算机视觉与模式识别 · 计算机科学 2022-04-05 Roman Bachmann , David Mizrahi , Andrei Atanov , Amir Zamir

Most modern face completion approaches adopt an autoencoder or its variants to restore missing regions in face images. Encoders are often utilized to learn powerful representations that play an important role in meeting the challenges of…

计算机视觉与模式识别 · 计算机科学 2021-12-21 Xin Ma , Xiaoqiang Zhou , Huaibo Huang , Gengyun Jia , Zhenhua Chai , Xiaolin Wei

The significant progress in the development of Large Language Models has contributed to blurring the distinction between human and AI-generated text. The increasing pervasiveness of AI-generated text and the difficulty in detecting it poses…

计算与语言 · 计算机科学 2025-03-18 Lucio La Cava , Davide Costa , Andrea Tagarelli

Low-dose computed tomography (LDCT) offers reduced X-ray radiation exposure but at the cost of compromised image quality, characterized by increased noise and artifacts. Recently, transformer models emerged as a promising avenue to enhance…

图像与视频处理 · 电气工程与系统科学 2023-10-20 Dayang Wang , Yongshun Xu , Shuo Han , Zhan Wu , Li Zhou , Bahareh Morovati , Hengyong Yu

Image-Text Retrieval (ITR) is challenging in bridging visual and lingual modalities. Contrastive learning has been adopted by most prior arts. Except for limited amount of negative image-text pairs, the capability of constrastive learning…

计算机视觉与模式识别 · 计算机科学 2026-03-27 Haoran Wang , Dongliang He , Wenhao Wu , Boyang Xia , Min Yang , Fu Li , Yunlong Yu , Zhong Ji , Errui Ding , Jingdong Wang

We propose a multi-resolution convolutional autoencoder (MrCAE) architecture that integrates and leverages three highly successful mathematical architectures: (i) multigrid methods, (ii) convolutional autoencoders and (iii) transfer…

机器学习 · 计算机科学 2020-04-13 Yuying Liu , Colin Ponce , Steven L. Brunton , J. Nathan Kutz

Detecting surface anomalies of industrial materials poses a significant challenge within a myriad of industrial manufacturing processes. In recent times, various methodologies have emerged, capitalizing on the advantages of employing a…

计算机视觉与模式识别 · 计算机科学 2024-03-05 Simon Thomine , Hichem Snoussi

To achieve reliable mining results for massive vessel trajectories, one of the most important challenges is how to efficiently compute the similarities between different vessel trajectories. The computation of vessel trajectory similarity…

机器学习 · 计算机科学 2021-06-11 Maohan Liang , Ryan Wen Liu , Shichen Li , Zhe Xiao , Xin Liu , Feng Lu

Contrastive Decoding (CD) has emerged as an effective inference-time strategy for enhancing open-ended text generation by exploiting the divergence in output probabilities between a large expert language model and a smaller amateur model.…

计算与语言 · 计算机科学 2025-07-30 Jaydip Sen , Subhasis Dasgupta , Hetvi Waghela