RT Journal Article T1 Choose, not hoard: Information-to-model matching for Artificial Intelligence in O-RAN A1 Martín Pérez, Jorge A1 Molner, Nuria A1 Malandrino, Francesco A1 Bernardos Cano, Carlos Jesús A1 Oliva Delgado, Antonio de la A1 Gomez-Barquero, David AB Open Radio Access Network (O-RAN) is an emerging paradigm, whereby virtualized network infrastructure elements from different vendors communicate via open, standardized interfaces. A key element therein is the RAN Intelligent Controller (RIC), an Artificial Intelligence (AI)-based controller. Traditionally, all data available in the network has been used to train a single AI model to be used at the RIC. This paper introduces, discusses, and evaluates the creation of multiple AI model instances at different RICs, leveraging information from some (or all) locations for their training. This brings about a flexible relationship between gNBs, the AI models used to control them, and the data such models are trained with. Experiments with real-world traces show how using multiple AI model instances that choose training data from specific locations improve the performance of traditional approaches following the hoarding strategy. PB IEEE SN 0163-6804 YR 2023 FD 2023-04 LK https://hdl.handle.net/10016/37203 UL https://hdl.handle.net/10016/37203 LA eng NO This work was partially supported by the European Union's Horizon 2020 research and innovation program through the project iNGENIOUS under grant agreement No. 957216, and by the Spanish Ministry of Economic Aff airs and Digital Transformation and the European Union-NextGenerationEU through the UNICO 5G I+D 6G-EDGEDT and 6G-DATADRIVEN projects. DS e-Archivo RD 17 jul. 2024