111 citations · 240 across the 24 of their papers we have counts for
8 papers · 1 filter
Sequential Retrieval in Dense Associative Memory: Asymptotic Dynamics and Storage Capacity
Mao Mishima, Ayaka Sakata, Kazushi Mimura
We study the retrieval dynamics of an -body asymmetric dense associative memory model, in which sequential retrieval is implemented by shifting one pattern index in the higher-o…
Time evolution of autocorrelation function in dynamical replica theory
Ayaka Sakata
Asynchronous dynamics given by the master equation in the Sherrington--Kirkpatrick (SK) spin-glass model is studied based on dynamical replica theory (DRT) with an extension to tak…
A Mean-field Approach for an Intercarrier Interference Canceller for OFDM
Ayaka Sakata, Yoshiyuki Kabashima, Yitzhak Peleg
The similarity of the mathematical description of random-field spin systems to orthogonal frequency-division multiplexing (OFDM) scheme for wireless communication is exploited in a…
Statistical Mechanics of Dictionary Learning
Ayaka Sakata, Yoshiyuki Kabashima
Finding a basis matrix (dictionary) by which objective signals are represented sparsely is of major relevance in various scientific and technological fields. We consider a problem…
Replica symmetry breaking in an adiabatic spin-glass model of adaptive evolution
Ayaka Sakata, Koji Hukushima, Kunihiko Kaneko
We study evolutionary canalization using a spin-glass model with replica theory, where spins and their interactions are dynamic variables whose configurations correspond to phenoty…
Partial annealing of a coupled mean-field spin-glass model with an embedded pattern
Ayaka Sakata, Koji Hukushima
A partially annealed mean-field spin-glass model with a locally embedded pattern is studied. The model consists of two dynamical variables, spins and interactions, that are in cont…
A statistical-mechanical study of evolution of robustness in noisy environment
Ayaka Sakata, Koji Hukushima, Kunihiko Kaneko
In biological systems, expression dynamics that can provide fitted phenotype patterns with respect to a specific function have evolved through mutations. This has been observed in…
Funnel landscape and mutational robustness as a result of evolution under thermal noise
Ayaka Sakata, Koji Hukushima, Kunihiko Kaneko
In biological systems, expression dynamics to shape a fitted phenotype for function has evolved through mutations to genes, as observed in the evolution of funnel landscape in prot…