no code implementations • 3 Aug 2022 • Aohan Li, Ikumi Urabe, Minoru Fujisawa, So Hasegawa, Hiroyuki Yasuda, Song-Ju Kim, Mikio Hasegawa
(1) Compared to other lightweight transmission-parameter selection schemes, collisions between LoRa devices can be efficiently avoided by our proposed scheme in LoRaWAN irrespective of changes in the available channels.
no code implementations • 19 Aug 2021 • Song-Ju Kim, Hiroyuki Yasuda, Ryoma Kitagawa, Mikio Hasegawa
We propose a simple channel-allocation method based on tug-of-war (TOW) dynamics, combined with the time scheduling based on nonlinear oscillator synchronization to efficiently use of the space (channel) and time resources in wireless communications.
no code implementations • 27 Jan 2021 • Song-Ju Kim, Taiki Takahashi, Kazuo Sano
In chaotic modern society, there is an increasing demand for the realization of true 'fairness'.
no code implementations • 14 Apr 2017 • Makoto Naruse, Yuta Terashima, Atsushi Uchida, Song-Ju Kim
Reinforcement learning involves decision making in dynamic and uncertain environments, and constitutes one important element of artificial intelligence (AI).
no code implementations • 1 Sep 2016 • Makoto Naruse, Martin Berthel, Aurélien Drezet, Serge Huant, Hirokazu Hori, Song-Ju Kim
In a past study, we successfully used the wave-particle duality of single photons to solve the two-armed bandit problem, which constitutes the foundation of reinforcement learning and decision making.
no code implementations • 26 Feb 2016 • Makoto Naruse, Song-Ju Kim, Masashi Aono, Martin Berthel, Aurélien Drezet, Serge Huant, Hirokazu Hori
Decision making is a vital function in this age of machine learning and artificial intelligence, yet its physical realization and theoretical fundamentals are still not completely understood.
no code implementations • 21 Jul 2015 • Song-Ju Kim, Tohru Tsuruoka, Tsuyoshi Hasegawa, Masakazu Aono
We propose a simple model for an atomic switch-based decision maker (ASDM), and show that, as long as its total volume of precipitated Ag atoms is conserved when coupled with suitable operations, an atomic switch system provides a sophisticated "decision-making" capability that is known to be one of the most important intellectual abilities in human beings.
no code implementations • 14 Apr 2015 • Song-Ju Kim, Makoto Naruse, Masashi Aono
Our society comprises a collection of such individuals, and the society is expected to maximise the total rewards, while the individuals compete for common rewards.
no code implementations • 13 Feb 2015 • Song-Ju Kim, Masashi Aono
The multi-armed bandit problem (MBP) is the problem of finding, as accurately and quickly as possible, the most profitable option from a set of options that gives stochastic rewards by referring to past experiences.
no code implementations • 30 Oct 2014 • Song-Ju Kim, Masashi Aono, Etsushi Nameda
We demonstrate that any physical object, as long as its volume is conserved when coupled with suitable operations, provides a sophisticated decision-making capability.