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Activity and motion analysis has the potential to be used as a diagnostic tool for mental disorders. However, to-date, little work has been performed in turning stratification measures of activity into useful symptom markers. The research…

Medical Physics · Physics 2019-08-19 Maxim Osipov

The primary visual cortex processes a large amount of visual information, however, due to its large receptive fields, when multiple stimuli fall within one receptive field, there are computational problems. To solve this problem, the visual…

Neurons and Cognition · Quantitative Biology 2019-04-18 Linda Wang

We consider a living organism as an observer of the evolution of its environment recording sensory information about the state space X of the environment in real time. Sensory information is sampled and then processed on two levels. On the…

Artificial Intelligence · Computer Science 2010-03-22 Dan Guralnik

Despite intense recent research, the neural correlates of conscious visual perception remain elusive. The most established paradigm for studying brain mechanisms underlying conscious perception is to keep the physical sensory inputs…

Neurons and Cognition · Quantitative Biology 2014-03-21 Qi Li , Zachary Hill , Biyu J. He

The predictive power of neural networks often costs model interpretability. Several techniques have been developed for explaining model outputs in terms of input features; however, it is difficult to translate such interpretations into…

Machine Learning · Computer Science 2017-08-17 Benjamin J. Lengerich , Sandeep Konam , Eric P. Xing , Stephanie Rosenthal , Manuela Veloso

Group activity recognition is the task of understanding the activity conducted by a group of people as a whole in a multi-person video. Existing models for this task are often impractical in that they demand ground-truth bounding box labels…

Computer Vision and Pattern Recognition · Computer Science 2022-04-06 Dongkeun Kim , Jinsung Lee , Minsu Cho , Suha Kwak

In recent years many methods have been developed to understand the internal workings of neural networks, often by describing the function of individual neurons in the model. However, these methods typically only focus on explaining the very…

Machine Learning · Computer Science 2024-05-14 Tuomas Oikarinen , Tsui-Wei Weng

We present a novel hierarchical model for human activity recognition. In contrast to approaches that successively recognize actions and activities, our approach jointly models actions and activities in a unified framework, and their labels…

Robotics · Computer Science 2015-03-09 Ninghang Hu , Gwenn Englebienne , Zhongyu Lou , Ben Kröse

This paper formulates a generalized classification algorithm with an application to classifying (or `decoding') neural activity in the brain. Medical doctors and researchers have long been interested in how brain activity correlates to body…

Optimization and Control · Mathematics 2015-03-17 Cary Humber , Kazufumi Ito , Chad Bouton

Human action recognition from well-segmented 3D skeleton data has been intensively studied and has been attracting an increasing attention. Online action detection goes one step further and is more challenging, which identifies the action…

Computer Vision and Pattern Recognition · Computer Science 2016-07-27 Yanghao Li , Cuiling Lan , Junliang Xing , Wenjun Zeng , Chunfeng Yuan , Jiaying Liu

Dimensionality reduction, a form of compression, can simplify representations of information to increase efficiency and reveal general patterns. Yet, this simplification also forfeits information, thereby reducing representational capacity.…

Power electronic interfaced devices progressively enable the increasing provision of flexible operational actions in distribution networks. The feasible flexibility these devices can effectively provide requires estimation and…

Systems and Control · Electrical Eng. & Systems 2023-08-14 Demetris Chrysostomou , Jose Luis Rueda Torres , Jochen Lorenz Cremer

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…

Computer Vision and Pattern Recognition · Computer Science 2021-08-24 Jiwoong Choi , Ismail Elezi , Hyuk-Jae Lee , Clement Farabet , Jose M. Alvarez

Motivation: Recognizing human actions in a video is a challenging task which has applications in various fields. Previous works in this area have either used images from a 2D or 3D camera. Few have used the idea that human actions can be…

Computer Vision and Pattern Recognition · Computer Science 2016-12-21 Adhavan Jayabalan , Harish Karunakaran , Shravan Murlidharan , Tesia Shizume

Observability is the property that enables to distinguish two different locations in $n$-dimensional state space from a reduced number of measured variables, usually just one. In high-dimensional systems it is therefore important to make…

Neurons and Cognition · Quantitative Biology 2019-05-06 Luis A. Aguirre , Leonardo L. Portes , Christophe Letellier

Attention level estimation systems have a high potential in many use cases, such as human-robot interaction, driver modeling and smart home systems, since being able to measure a person's attention level opens the possibility to natural…

Computer Vision and Pattern Recognition · Computer Science 2019-01-25 Andrea Coifman , Péter Rohoska , Miklas S. Kristoffersen , Sven E. Shepstone , Zheng-Hua Tan

Among the most impressive recent applications of neural decoding is the visual representation decoding, where the category of an object that a subject either sees or imagines is inferred by observing his/her brain activity. Even though…

Neural and Evolutionary Computing · Computer Science 2018-11-06 Angeliki Papadimitriou , Nikolaos Passalis , Anastasios Tefas

Neuroscience theory posits that the brain's visual system coarsely identifies broad object categories via neural activation patterns, with similar objects producing similar neural responses. Artificial neural networks also have internal…

Computer Vision and Pattern Recognition · Computer Science 2018-11-28 Nathaniel Blanchard , Jeffery Kinnison , Brandon RichardWebster , Pouya Bashivan , Walter J. Scheirer

The neural activity in the visual processing is influenced by both external stimuli and internal brain states. Ideally, a neural predictive model should account for both of them. Currently, there are no dynamic encoding models that…

Neurons and Cognition · Quantitative Biology 2025-11-18 Finn Schmidt , Polina Turishcheva , Suhas Shrinivasan , Fabian H. Sinz

Conventional neuroimaging analyses have revealed the computational specificity of localized brain regions, exploiting the power of the subtraction technique in fMRI and event-related potential analyses in EEG. Moving beyond this convention,…

Neurons and Cognition · Quantitative Biology 2016-06-15 Javier O. Garcia , Justin Brooks , Scott Kerick , Tony Johnson , Tim Mullen , Jean M. Vettel