A mesoporous SiO2 thin films-based ionic decision-maker for solving multi-armed bandit problems. (6th March 2020)

• Record Type: Journal Article
• Authors: Etoh, D.; Tsuchiya, T.; Kitagawa, Y.; Takayanagi, M.; Itoh, Y.; Tsuruoka, T.; Higuchi, T.; Terabe, K.
• Is Part Of: Japanese journal of applied physics. Volume 59:Number SI(2020)
• Publication Date: 2020-03-06
• Subjects: Physics -- Periodicals; 621.05
• DOI: 10.35848/1347-4065/ab7437
• Languages: English
• ISSNs: 0021-4922

Abstract

Abstract: An ionic decision-maker (IDM), with the remarkable ability to solve multi-armed bandit problems (MBPs), has been developed as a new artificial intelligence technology, which have humanlike decision-making capabilities. Owing to their low durability, the Nafion polymer electrolytes and electrode materials normally found within IDMs do not meet the high-level integration and repetitive operation requirements of such devices. Therefore, in this study, mesoporous SiO2, which is a proton conducting inorganic oxide, has been utilized as the IDM electrolyte. The oxide-based IDMs developed showed good solvability for MBPs and excellent adaptability to dramatic environmental shifts, which were both at similar levels to those found in Nafion-based IDMs. While the adaptation exhibited by the oxide-based IDMs was slightly inferior to that found in Nafion-based IDMs, fluctuations in the correct selection rate (CSR) were significantly improved over those observed in Nafion-based IDMs. Further, the average of reached CSR was enhanced to 0.96 in comparison to 0.92 for Nafion-based IDMs.