2026-06-29T18:53:28Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/82032023-12-15T01:05:14Zcom_10259_4219com_10259_5086com_10259_2604col_10259_4220

Semi-supervised classification with pairwise constraints: A case study on animal identification from video Kuncheva, Ludmila I. . Garrido Labrador, José Luis Ramos Pérez, Ismael Hennessey, Samuel L. Rodríguez Diez, Juan José Animal re-identification Computer vision Classification Semi-supervised learning Mainstream semi-supervised classification assumes that part of the available data are labelled. Here we assume that, in addition to the labels, we have pairwise constraints on the unlabelled data. Each constraint links two instances, and is one of Must Link (ML, belong to the same class) or Cannot Link (CL, belong to different classes). We propose an approach that uses the labelled data to train a classifier and then applies the ML and CL constraints in subsequent labelling. In our approach, a set of instances are labelled at the same time. Our case study is on animal re-identification. The dataset consists of five free-camera video clips of animals (koi fish, pigeons and pigs), annotated with bounding boxes and animal identities. The proposed approach combines the representations or classifiers predictions from the bounding boxes of consecutive frames. We demonstrate that our approach outperforms standard classifiers, constrained clustering, as well as inductive and transductive semi-supervised learning, using five feature representations. 2023-12-14T09:32:56Z 2023-12-14T09:32:56Z 2023-12 info:eu-repo/semantics/article 1566-2535 http://hdl.handle.net/10259/8203 10.1016/j.inffus.2023.102188 eng Information Fusion. 2023, 102188 https://doi.org/10.1016/j.inffus.2023.102188 info:eu-repo/grantAgreement/UKRI//EP%2FS023992%2F1/GB/ info:eu-repo/grantAgreement/Junta de Castilla y León//BU055P20//Métodos y Aplicaciones Industriales del Aprendizaje Semisupervisado/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-119894GB-I00/ES/APRENDIZAJE AUTOMATICO CON DATOS ESCASAMENTE ETIQUETADOS PARA LA INDUSTRIA 4.0/ info:eu-repo/grantAgreement/MIU//PRX21%2F00638/ES/ http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Attribution-NonCommercial-NoDerivatives 4.0 Internacional Elsevier