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21 papers · 1 filter
Logarithmic Expected-Time Leader Election in Population Protocol Model
Yuichi Sudo, Fukuhito Ooshita, Taisuke Izumi +2
In this paper, the leader election problem in the population protocol model is considered. A leader election protocol with logarithmic stabilization time is given. Given a rough kn…
Trainable Projected Gradient Detector for Massive Overloaded MIMO Channels: Data-driven Tuning Approach
Satoshi Takabe, Masayuki Imanishi, Tadashi Wadayama +2
This paper presents a deep learning-aided iterative detection algorithm for massive overloaded multiple-input multiple-output (MIMO) systems where the number of transmit antennas $…
Safe RuleFit: Learning Optimal Sparse Rule Model by Meta Safe Screening
Hiroki Kato, Hiroyuki Hanada, Ichiro Takeuchi
We consider the problem of learning a sparse rule model, a prediction model in the form of a sparse linear combination of rules, where a rule is an indicator function defined over…
Nascent fragment shell effects on the nuclear fission processes in semiclassical periodic orbit theory
Ken-ichiro Arita, Takatoshi Ichikawa, Kenichi Matsuyanagi
Making use of the semiclassical periodic orbit theory (POT), we propose, for the first time, a method to exclusively evaluate the shell effects associated with each of the nascent…
Localization and delocalization of fermions in a background of correlated spins
Tetsuya Takaishi, Kazuhiko Sakakibara, Ikuo Ichinose +1
We study the (de)localization phenomena of one-component lattice fermions in spin backgrounds. The O(3) classical spin variables on sites fluctuate thermally through the ordinary n…
On a norm inequality for a positive block-matrix
Tomohiro Hayashi
For a positive semidefinite matrix , we consider the norm inequality . We show that this inequality holds unde…