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Deep learning models based on CNNs are predominantly used in image classification tasks. Such approaches, assuming independence of object categories, normally use a CNN as a feature learner and apply a flat classifier on top of it. Object…

Machine Learning · Computer Science 2019-11-19 Jaehoon Koo , Diego Klabjan , Jean Utke

Procedural activities are sequences of key-steps aimed at achieving specific goals. They are crucial to build intelligent agents able to assist users effectively. In this context, task graphs have emerged as a human-understandable…

Computer Vision and Pattern Recognition · Computer Science 2025-01-10 Luigi Seminara , Giovanni Maria Farinella , Antonino Furnari

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

Numerous networked systems feature a structure of nontrivial communities, which often correspond to their functional modules. Such communities have been detected in real-world biological, social and technological systems, as well as in…

Physics and Society · Physics 2025-07-08 Charo I. del Genio

Deep learning has been successfully applied to human activity recognition. However, training deep neural networks requires explicitly labeled data which is difficult to acquire. In this paper, we present a model with multiple siamese…

Human-Computer Interaction · Computer Science 2023-07-19 Taoran Sheng , Manfred Huber

Human group detection, which splits crowd of people into groups, is an important step for video-based human social activity analysis. The core of human group detection is the human social relation representation and division.In this paper,…

Computer Vision and Pattern Recognition · Computer Science 2022-11-08 Jiacheng Li , Ruize Han , Haomin Yan , Zekun Qian , Wei Feng , Song Wang

The focus of this paper is dynamic gesture recognition in the context of the interaction between humans and machines. We propose a model consisting of two sub-networks, a transformer and an ordered-neuron long-short-term-memory (ON-LSTM)…

Computer Vision and Pattern Recognition · Computer Science 2023-11-03 Kenneth Lai , Svetlana Yanushkevich

The remarkable performance of deep neural networks depends on the availability of massive labeled data. To alleviate the load of data annotation, active deep learning aims to select a minimal set of training points to be labelled which…

Machine Learning · Computer Science 2020-03-24 Dan Kushnir , Luca Venturi

Recently, Graph Neural Networks (GNNs) have proven their effectiveness for recommender systems. Existing studies have applied GNNs to capture collaborative relations in the data. However, in real-world scenarios, the relations in a…

Information Retrieval · Computer Science 2021-11-30 Xiaohan Li , Zhiwei Liu , Stephen Guo , Zheng Liu , Hao Peng , Philip S. Yu , Kannan Achan

Predicting drug side-effects before they occur is a key task in keeping the number of drug-related hospitalizations low and to improve drug discovery processes. Automatic predictors of side-effects generally are not able to process the…

Machine Learning · Statistics 2022-12-01 Pietro Bongini , Elisa Messori , Niccolò Pancino , Monica Bianchini

This paper proposes a DNN-based system that detects multiple people from a single depth image. Our neural network processes a depth image and outputs a likelihood map in image coordinates, where each detection corresponds to a…

Computer Vision and Pattern Recognition · Computer Science 2020-07-15 David Fuentes-Jimenez , Cristina Losada-Gutierrez , David Casillas-Perez , Javier Macias-Guarasa , Roberto Martin-Lopez , Daniel Pizarro , Carlos A. Luna

Action Detection is a complex task that aims to detect and classify human actions in video clips. Typically, it has been addressed by processing fine-grained features extracted from a video classification backbone. Recently, thanks to the…

Computer Vision and Pattern Recognition · Computer Science 2021-03-02 Matteo Tomei , Lorenzo Baraldi , Simone Calderara , Simone Bronzin , Rita Cucchiara

The extensive ubiquitous availability of sensors in smart devices and the Internet of Things (IoT) has opened up the possibilities for implementing sensor-based activity recognition. As opposed to traditional sensor time-series processing…

Signal Processing · Electrical Eng. & Systems 2023-10-09 Danial Ahangarani , Mohammad Shirazi , Navid Ashraf

Existing deep learning models may encounter great challenges in handling graph structured data. In this paper, we introduce a new deep learning model for graph data specifically, namely the deep loopy neural network. Significantly different…

Machine Learning · Computer Science 2019-09-06 Jiawei Zhang

This study focuses on the problem of user satisfaction classification and proposes a framework based on graph neural networks to address the limitations of traditional methods in handling complex interaction relationships and…

Human-Computer Interaction · Computer Science 2025-11-07 Rui Liu , Runsheng Zhang , Shixiao Wang

In this paper we propose a method based on deep learning that detects multiple people from a single overhead depth image with high reliability. Our neural network, called DPDnet, is based on two fully-convolutional encoder-decoder neural…

Computer Vision and Pattern Recognition · Computer Science 2020-06-02 David Fuentes-Jimenez , Roberto Martin-Lopez , Cristina Losada-Gutierrez , David Casillas-Perez , Javier Macias-Guarasa , Daniel Pizarro , Carlos A. Luna

Molecular activity prediction is critical in drug design. Machine learning techniques such as kernel methods and random forests have been successful for this task. These models require fixed-size feature vectors as input while the molecules…

Machine Learning · Computer Science 2018-01-30 Trang Pham , Truyen Tran , Svetha Venkatesh

Fine-grained image recognition is central to many multimedia tasks such as search, retrieval and captioning. Unfortunately, these tasks are still challenging since the appearance of samples of the same class can be more different than those…

Computer Vision and Pattern Recognition · Computer Science 2019-07-31 Pau Rodríguez López , Diego Velazquez Dorta , Guillem Cucurull Preixens , Josep M. Gonfaus , F. Xavier Roca Marva , Jordi Gonzàlez Sabaté

The real world is awash with multi-agent problems that require collective action by self-interested agents, from the routing of packets across a computer network to the management of irrigation systems. Such systems have local incentives…

Multiagent Systems · Computer Science 2021-02-16 Michiel A. Bakker , Richard Everett , Laura Weidinger , Iason Gabriel , William S. Isaac , Joel Z. Leibo , Edward Hughes

In this paper we propose an end-to-end trainable deep neural network model for egocentric activity recognition. Our model is built on the observation that egocentric activities are highly characterized by the objects and their locations in…

Computer Vision and Pattern Recognition · Computer Science 2018-08-01 Swathikiran Sudhakaran , Oswald Lanz