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A popular method for anomaly detection is to use the generator of an adversarial network to formulate anomaly scores over reconstruction loss of input. Due to the rare occurrence of anomalies, optimizing such networks can be a cumbersome…

计算机视觉与模式识别 · 计算机科学 2020-06-22 Muhammad Zaigham Zaheer , Jin-ha Lee , Marcella Astrid , Seung-Ik Lee

Generative networks are fundamentally different in their aim and methods compared to CNNs for classification, segmentation, or object detection. They have initially not been meant to be an image analysis tool, but to produce naturally…

计算机视觉与模式识别 · 计算机科学 2022-07-11 Markus Wenzel

Time series anomaly detection (TSAD) plays a vital role in many industrial applications. While contrastive learning has gained momentum in the time series domain for its prowess in extracting meaningful representations from unlabeled data,…

机器学习 · 计算机科学 2025-01-28 Katrina Chen , Mingbin Feng , Tony S. Wirjanto

Detecting anomalies is one fundamental aspect of a safety-critical software system, however, it remains a long-standing problem. Numerous branches of works have been proposed to alleviate the complication and have demonstrated their…

机器学习 · 计算机科学 2023-01-31 Hyunsoo Cho , Jinseok Seol , Sang-goo Lee

The ability to evolve is fundamental for any valuable autonomous agent whose knowledge cannot remain limited to that injected by the manufacturer. Consider for example a home assistant robot: it should be able to incrementally learn new…

计算机视觉与模式识别 · 计算机科学 2022-09-05 Francesco Cappio Borlino , Silvia Bucci , Tatiana Tommasi

Contrastive learning is a powerful technique to learn representations that are semantically distinctive and geometrically invariant. While most of the earlier approaches have demonstrated its effectiveness on single-modality learning tasks…

计算机视觉与模式识别 · 计算机科学 2021-10-19 Anurag Jain , Yashaswi Verma

Implicit generative models have the capability to learn arbitrary complex data distributions. On the downside, training requires telling apart real data from artificially-generated ones using adversarial discriminators, leading to unstable…

机器学习 · 计算机科学 2024-02-27 José Manuel de Frutos , Pablo M. Olmos , Manuel A. Vázquez , Joaquín Míguez

Deep clustering successfully provides more effective features than conventional ones and thus becomes an important technique in current unsupervised learning. However, most deep clustering methods ignore the vital positive and negative…

计算机视觉与模式识别 · 计算机科学 2021-03-10 Zhiyuan Dang , Cheng Deng , Xu Yang , Heng Huang

Recent self-supervised contrastive learning provides an effective approach for unsupervised person re-identification (ReID) by learning invariance from different views (transformed versions) of an input. In this paper, we incorporate a…

计算机视觉与模式识别 · 计算机科学 2021-03-31 Hao Chen , Yaohui Wang , Benoit Lagadec , Antitza Dantcheva , Francois Bremond

We consider unsupervised domain adaptation (UDA), where labeled data from a source domain (e.g., photographs) and unlabeled data from a target domain (e.g., sketches) are used to learn a classifier for the target domain. Conventional UDA…

机器学习 · 计算机科学 2022-12-05 Kendrick Shen , Robbie Jones , Ananya Kumar , Sang Michael Xie , Jeff Z. HaoChen , Tengyu Ma , Percy Liang

Self-supervised learning is an empirically successful approach to unsupervised learning based on creating artificial supervised learning problems. A popular self-supervised approach to representation learning is contrastive learning, which…

机器学习 · 计算机科学 2021-04-16 Christopher Tosh , Akshay Krishnamurthy , Daniel Hsu

Contrastive learning has recently seen tremendous success in self-supervised learning. So far, however, it is largely unclear why the learned representations generalize so effectively to a large variety of downstream tasks. We here prove…

机器学习 · 计算机科学 2022-04-08 Roland S. Zimmermann , Yash Sharma , Steffen Schneider , Matthias Bethge , Wieland Brendel

Several automatic approaches for objective music performance assessment (MPA) have been proposed in the past, however, existing systems are not yet capable of reliably predicting ratings with the same accuracy as professional judges. This…

声音 · 计算机科学 2021-08-16 Pavan Seshadri , Alexander Lerch

Classical machine learners are designed only to tackle one task without capability of adopting new emerging tasks or classes whereas such capacity is more practical and human-like in the real world. To address this shortcoming, continual…

机器学习 · 计算机科学 2021-12-06 Xuejun Han , Yuhong Guo

Cross-modality distillation arises as an important topic for data modalities containing limited knowledge such as depth maps and high-quality sketches. Such techniques are of great importance, especially for memory and privacy-restricted…

机器学习 · 计算机科学 2024-05-29 Hangyu Lin , Chen Liu , Chengming Xu , Zhengqi Gao , Yanwei Fu , Yuan Yao

Deep neural networks have been widely studied in autonomous driving applications such as semantic segmentation or depth estimation. However, training a neural network in a supervised manner requires a large amount of annotated labels which…

计算机视觉与模式识别 · 计算机科学 2021-03-11 Dongseok Shim , H. Jin Kim

We develop a method to combine Markov chain Monte Carlo (MCMC) and variational inference (VI), leveraging the advantages of both inference approaches. Specifically, we improve the variational distribution by running a few MCMC steps. To…

机器学习 · 统计学 2019-05-29 Francisco J. R. Ruiz , Michalis K. Titsias

Temporal difference learning (TD) is a simple iterative algorithm used to estimate the value function corresponding to a given policy in a Markov decision process. Although TD is one of the most widely used algorithms in reinforcement…

机器学习 · 计算机科学 2018-11-07 Jalaj Bhandari , Daniel Russo , Raghav Singal

Existed pre-trained models have achieved state-of-the-art performance on various text classification tasks. These models have proven to be useful in learning universal language representations. However, the semantic discrepancy between…

机器学习 · 计算机科学 2022-01-07 Jinhe Lan , Qingyuan Zhan , Chenhao Jiang , Kunping Yuan , Desheng Wang

Domain adaptation aims to use training data from one or multiple source domains to learn a hypothesis that can be generalized to a different, but related, target domain. As such, having a reliable measure for evaluating the discrepancy of…

机器学习 · 计算机科学 2024-05-31 Wenzhe Yin , Shujian Yu , Yicong Lin , Jie Liu , Jan-Jakob Sonke , Efstratios Gavves