{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,10]],"date-time":"2026-01-10T19:34:55Z","timestamp":1768073695782,"version":"3.49.0"},"reference-count":24,"publisher":"MDPI AG","issue":"16","license":[{"start":{"date-parts":[[2023,8,9]],"date-time":"2023-08-09T00:00:00Z","timestamp":1691539200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Key Research and Development Program of China","award":["2022ZD0160401"],"award-info":[{"award-number":["2022ZD0160401"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Active learning (AL) is an approach that can reduce the dependence on the labeled set significantly. However, most current active-learning methods are only concerned with the first two columns of the posterior probability matrix during the sampling phase. When the difference between the first and second-largest posterior probabilities of several samples is proximate, these approaches fail to distinguish them further. To improve these deficiencies, we propose an active-learning algorithm, joint posterior probabilistic active learning combined with conditional random field (JPPAL_CRF). In the active-learning sampling phase, a new sampling decision function is built by jointing all the information in the posterior probability matrix. By doing so, the variability between different samples is refined, which makes the selected samples more meaningful for classification. Then, a conditional random field (CRF) approach is applied to mine the regional spatial information of the hyperspectral image and optimize the classification results. Experiments on two common hyperspectral datasets validate the effectiveness of JPPAL_CRF.<\/jats:p>","DOI":"10.3390\/rs15163936","type":"journal-article","created":{"date-parts":[[2023,8,9]],"date-time":"2023-08-09T10:21:50Z","timestamp":1691576510000},"page":"3936","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Joint Posterior Probability Active Learning for Hyperspectral Image Classification"],"prefix":"10.3390","volume":"15","author":[{"given":"Shuying","family":"Li","sequence":"first","affiliation":[{"name":"School of Automation, Xi\u2019an University of Posts and Telecommunications, Xi\u2019an 710121, China"},{"name":"Shanghai Artificial Intelligence Laboratory, Shanghai 200232, China"}]},{"given":"Shaowei","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Automation, Xi\u2019an University of Posts and Telecommunications, Xi\u2019an 710121, China"}]},{"given":"Qiang","family":"Li","sequence":"additional","affiliation":[{"name":"School of Electronic Engineering, Xidian University, Xi\u2019an 710071, China"}]}],"member":"1968","published-online":{"date-parts":[[2023,8,9]]},"reference":[{"key":"ref_1","first-page":"2659","article-title":"Diverse-Region Hyperspectral Image Classification via Superpixelwise Graph Convolution Technique","volume":"14","author":"Huang","year":"2022","journal-title":"Remote Sens."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"7252","DOI":"10.1109\/TIP.2022.3221287","article-title":"Dual-stage approach toward hyperspectral image super-resolution","volume":"31","author":"Li","year":"2022","journal-title":"IEEE Trans. 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