{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,2]],"date-time":"2026-01-02T09:30:56Z","timestamp":1767346256789,"version":"3.48.0"},"reference-count":63,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Zhongshan Institute of Changchun University of Science and Technology","award":["CXTD2023005"],"award-info":[{"award-number":["CXTD2023005"]}]},{"name":"Science and Technology Development Plan Project of Jilin Provincial Department of Science and Technology","award":["YDZJ202301ZYTS411"],"award-info":[{"award-number":["YDZJ202301ZYTS411"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Computers"],"abstract":"<jats:p>Trajectory prediction constitutes a key technology for intelligent systems to forecast future movements of dynamic agents, yet it faces significant challenges due to the uncertainty of motion behavior. We propose iDMa, a stochastic trajectory prediction framework that pioneers the integration of diffusion model with Mamba architecture to achieve high-precision and high-efficiency trajectory generation. Our approach introduces two key innovations: (1) a dual-parameter learning mechanism that optimizes noise estimation of mean and variance space, unlike conventional diffusion methods that employ fixed variance during the denoising process, so as to constrain the feasible domain more accurately; (2) a hybrid denoising backbone network that incorporates Transformer encoders and Mamba blocks. Compared to existing state-of-the-art methods, iDMa reduces the average displacement error (ADE) by 4.76% (0.20 vs. 0.21) on the ETH-UCY dataset and 1.85% (7.95 vs. 8.10) on the SDD dataset.<\/jats:p>","DOI":"10.3390\/computers15010012","type":"journal-article","created":{"date-parts":[[2026,1,2]],"date-time":"2026-01-02T09:18:56Z","timestamp":1767345536000},"page":"12","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["iDMaTraj: Improved Diffusion Mamba Model for Stochastic Pedestrian Trajectory Prediction"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0009-0006-6359-1276","authenticated-orcid":false,"given":"Yin","family":"Wang","sequence":"first","affiliation":[{"name":"College of Artificial Intelligence, Changchun University of Science and Technology, Changchun 130022, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2552-2836","authenticated-orcid":false,"given":"Feiran","family":"Fu","sequence":"additional","affiliation":[{"name":"College of Artificial Intelligence, Changchun University of Science and Technology, Changchun 130022, China"},{"name":"Zhongshan Institute, Changchun University of Science and Technology, Zhongshan 528437, China"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-1475-371X","authenticated-orcid":false,"given":"Ming","family":"Fang","sequence":"additional","affiliation":[{"name":"College of Artificial Intelligence, Changchun University of Science and Technology, Changchun 130022, China"},{"name":"Zhongshan Institute, Changchun University of Science and Technology, Zhongshan 528437, China"}]},{"given":"Junlong","family":"Feng","sequence":"additional","affiliation":[{"name":"College of Artificial Intelligence, Changchun University of Science and Technology, Changchun 130022, China"}]},{"given":"Lijin","family":"Deng","sequence":"additional","affiliation":[{"name":"Zhongshan Institute, Changchun University of Science and Technology, Zhongshan 528437, China"}]},{"given":"Zhengwei","family":"Ren","sequence":"additional","affiliation":[{"name":"Zhongshan Institute, Changchun University of Science and Technology, Zhongshan 528437, China"}]},{"given":"Yuejianan","family":"Gu","sequence":"additional","affiliation":[{"name":"College of Artificial Intelligence, Changchun University of Science and Technology, Changchun 130022, China"}]}],"member":"1968","published-online":{"date-parts":[[2026,1,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Bera, A., Kim, S., Randhavane, T., Pratapa, S., and Manocha, D. 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