0559729 20250310150020.920220808235959.9 85132945410 000827395000014 10.1016/j.knosys.2022.108875 12 s. P cav_un_epca*02571730950-7051251Elsevier Bayesian transfer learning (BTL) Multitask learning Local and global modelling Fully probabilistic design Incomplete modelling Gaussian process regression cav_un_auth*0370767 Papež Milan UTIA-B Adaptivní systémy Department of Adaptive Systems AS AS CZ Ústav teorie informace a automatizace AV ČR, v. v. i. cav_un_auth*0370768 Quinn Anthony UTIA-B Adaptivní systémy Department of Adaptive Systems AS AS IE Ústav teorie informace a automatizace AV ČR, v. v. i. http://library.utia.cas.cz/separaty/2022/AS/papez-0559729.pdf https://www.sciencedirect.com/science/article/pii/S095070512200418X?via%3Dihub GA18-15970S GA ČR CZ cav_un_auth*0362986 Bayesian transfer learning (BTL) is defined in this paper as the task of conditioning a target probability distribution on a transferred source distribution. The target globally models the interaction between the source and target, and conditions on a probabilistic data predictor made available by an independent local source modeller. Fully probabilistic design is adopted to solve this optimal decision-making problem in the target. By successfully transferring higher moments of the source, the target can reject unreliable source knowledge (i.e. it achieves robust transfer). This dual-modeller framework means that the source’s local processing of raw data into a transferred predictive distribution – with compressive possibilities – is enriched by (the possible expertise of) the local source model. In addition, the introduction of the global target modeller allows correlation between the source and target tasks – if known to the target – to be accounted for. Important consequences emerge. Firstly, the new scheme attains the performance of fully modelled (i.e. conventional) multitask learning schemes in (those rare) cases where target model misspecification is avoided. Secondly, and more importantly, the new dual-modeller framework is robust to the model misspecification that undermines conventional multitask learning. We thoroughly explore these issues in the key context of interacting Gaussian process regression tasks. Experimental evidence from both synthetic and real data settings validates our technical findings: that the proposed BTL framework enjoys robustness in transfer while also being robust to model misspecification. WOS BD 10000 10200 10201 2023 2 2 R hod 4 4rh 4 20250310142813.8 4 20250310150020.9 RVO:67985556 https://hdl.handle.net/11104/0333424 S 108875 2 Article Computer Science Artificial Intelligence C COMPUTERSCIENCE.ARTIFICIALINTELLIGENCE 8.6 1.7 3.4 0.03615 1.443 36687 2.065 7.700 1246 Q1 87.2 Q2 Q1 1.5 Q1 87.2 2022 Soubory v repozitáři: papez-0559729.pdf 85132945410 SCOPUS PUBMED 000827395000014 WOS cav_un_epca*0257173 Knowledge-Based System 0950-7051 1872-7409 Roč. 251 č. 1 2022 Elsevier