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Distributed radar sensors enable robust human activity recognition. However, scaling the number of coordinated nodes introduces challenges in feature extraction from large datasets, and transparent data fusion. We propose an end-to-end…

信号处理 · 电气工程与系统科学 2026-01-07 Mina Shahbazifar , Zolfa Zeinalpour-Yazdi , Matthias Hollick , Arash Asadi , Vahid Jamali

Detecting out-of-distribution (OOD) samples is essential for ensuring the reliability of deep neural networks (DNNs) in real-world scenarios. While previous research has predominantly investigated the disparity between in-distribution (ID)…

计算机视觉与模式识别 · 计算机科学 2024-07-23 Yingwen Wu , Tao Li , Xinwen Cheng , Jie Yang , Xiaolin Huang

The representations of the activation space of deep neural networks (DNNs) are widely utilized for tasks like natural language processing, anomaly detection and speech recognition. Due to the diverse nature of these tasks and the large size…

The ability of a deep learning network to distinguish between in-distribution (ID) and out-of-distribution (OOD) inputs is crucial for ensuring the reliability and trustworthiness of AI systems. Existing OOD detection methods often involve…

机器学习 · 计算机科学 2024-12-25 Gagandeep Singh , Ishan Mishra , Deepak Mishra

This paper explores the intricate behavior of deep neural networks (DNNs) through the lens of neuron activation dynamics. We propose a probabilistic framework that can analyze models' neuron activation patterns as a stochastic process,…

人工智能 · 计算机科学 2024-12-25 Yizhou Zhang , Yang Sui

Anomalies are intuitively easy for human experts to understand, but they are hard to define mathematically. Therefore, in order to have performance guarantees in unsupervised anomaly detection, priors need to be assumed on what the…

机器学习 · 统计学 2020-04-08 Tiago Pimentel , Marianne Monteiro , Adriano Veloso , Nivio Ziviani

Inducing and leveraging sparse activations during training and inference is a promising avenue for improving the computational efficiency of deep networks, which is increasingly important as network sizes continue to grow and their…

机器学习 · 计算机科学 2024-02-27 Ilan Price , Nicholas Daultry Ball , Samuel C. H. Lam , Adam C. Jones , Jared Tanner

Often, deep network models are purely inductive during training and while performing inference on unseen data. Thus, when such models are used for predictions, it is well known that they often fail to capture the semantic information and…

计算机视觉与模式识别 · 计算机科学 2023-10-09 Zhu Wang , Sourav Medya , Sathya N. Ravi

Modeling uncertainty in deep neural networks, despite recent important advances, is still an open problem. Bayesian neural networks are a powerful solution, where the prior over network weights is a design choice, often a normal…

机器学习 · 统计学 2019-10-29 Raanan Y. Rohekar , Yaniv Gurwicz , Shami Nisimov , Gal Novik

We propose a general framework called Network Dissection for quantifying the interpretability of latent representations of CNNs by evaluating the alignment between individual hidden units and a set of semantic concepts. Given any CNN model,…

计算机视觉与模式识别 · 计算机科学 2017-04-20 David Bau , Bolei Zhou , Aditya Khosla , Aude Oliva , Antonio Torralba

A deep neural network (DNN) with piecewise linear activations can partition the input space into numerous small linear regions, where different linear functions are fitted. It is believed that the number of these regions represents the…

机器学习 · 计算机科学 2020-04-30 Xiao Zhang , Dongrui Wu

The deep learning community has devised a diverse set of methods to make gradient optimization, using large datasets, of large and highly complex models with deeply cascaded nonlinearities, practical. Taken as a whole, these methods…

机器学习 · 计算机科学 2016-11-14 Atılım Güneş Baydin , Barak A. Pearlmutter , Jeffrey Mark Siskind

The rise of deep learning has greatly advanced human behavior monitoring using wearable sensors, particularly human activity recognition (HAR). While deep models have been widely studied, most assume stationary data distributions - an…

Deep neural networks (DNNs) perform well at classifying inputs associated with the classes they have been trained on, which are known as in distribution inputs. However, out-of-distribution (OOD) inputs pose a great challenge to DNNs and…

机器学习 · 计算机科学 2021-02-24 Guy Amit , Moshe Levy , Ishai Rosenberg , Asaf Shabtai , Yuval Elovici

In this paper, we show that the performance of a learnt generative model is closely related to the model's ability to accurately represent the inferred \textbf{latent data distribution}, i.e. its topology and structural properties. We…

计算机视觉与模式识别 · 计算机科学 2020-09-02 Shuyu Lin , Ronald Clark

Understanding the inner workings of deep neural networks (DNNs) is essential to provide trustworthy artificial intelligence techniques for practical applications. Existing studies typically involve linking semantic concepts to units or…

计算机视觉与模式识别 · 计算机科学 2021-03-25 Jie Hu , Liujuan Cao , Qixiang Ye , Tong Tong , ShengChuan Zhang , Ke Li , Feiyue Huang , Rongrong Ji , Ling Shao

When testing data and training data come from different distributions, deep neural networks (DNNs) will face significant safety risks in practical applications. Therefore, out-of-distribution (OOD) detection techniques, which can identify…

机器学习 · 计算机科学 2026-04-01 Cheng Yang , Yu Hao , Qi Zhang , Chuan Shi

Out-of-distribution detection is an important capability that has long eluded vanilla neural networks. Deep Neural networks (DNNs) tend to generate over-confident predictions when presented with inputs that are significantly…

机器学习 · 计算机科学 2022-02-24 Sumedh A Sontakke , Buvaneswari Ramanan , Laurent Itti , Thomas Woo

Active learning aims to reduce labeling costs by selecting only the most informative samples on a dataset. Few existing works have addressed active learning for object detection. Most of these methods are based on multiple models or are…

计算机视觉与模式识别 · 计算机科学 2021-08-24 Jiwoong Choi , Ismail Elezi , Hyuk-Jae Lee , Clement Farabet , Jose M. Alvarez

Online Action Detection (OAD) in videos is proposed as a per-frame labeling task to address the real-time prediction tasks that can only obtain the previous and current video frames. This paper presents a novel learning-with-privileged…

计算机视觉与模式识别 · 计算机科学 2020-12-04 Peisen Zhao , Lingxi Xie , Ya Zhang , Yanfeng Wang , Qi Tian