17,718 research outputs found
Spintronic Nanodevices for Neuromorphic Sensing Chips
Recent developments in spintronics materials and physics are promising to develop a new type of
magnetic sensors which can be embedded into the silicon chips. These neuromorphic sensing chips will
be designed to capture the biomagnetic signals from active biological tissue exploited as brain-machine
interface. They lead to machines that are able to sense and interact with the world in humanlike ways
and able to accelerate years of fitful advance in artificial intelligence. To detect the weak biomagnetic
signals, this work aims to develop a CMOS-compatible spintronic sensor based on the magnetoresistive
(MR) effect. As an alternative to bulky superconducting quantum interference device (SQUID) systems,
the miniaturised spintronic devices can be integrated with standard CMOS technologies makes it
possible to detect weak biomagnetic signals with micron-sized, non-cooled and low-cost. Fig. 1 shows
the finite element method (FEM)-based simulation results of a Tunnelling-Magnetoresistive (TMR)
sensor with an optimal structure in COMSOL Multiphysics. The finest geometry and material are
demonstrated and compared with the state-of-the-art. The proposed TMR sensor achieves a linear
response with a high TMR ratio of 172% and sensitivity of 223 μV/Oe. The results are promising for
utilizing the TMR sensors in future miniaturized brain-machine interface, such as
Magnetoencephalography (MEG) systems for neuromorphic sensing
Poker as a Skill Game: Rational vs Irrational Behaviors
In many countries poker is one of the most popular card games. Although each
variant of poker has its own rules, all involve the use of money to make the
challenge meaningful. Nowadays, in the collective consciousness, some variants
of poker are referred to as games of skill, others as gambling. A poker table
can be viewed as a psychology lab, where human behavior can be observed and
quantified. This work provides a preliminary analysis of the role of
rationality in poker games, using a stylized version of Texas Hold'em. In
particular, we compare the performance of two different kinds of players, i.e.,
rational vs irrational players, during a poker tournament. Results show that
these behaviors (i.e., rationality and irrationality) affect both the outcomes
of challenges and the way poker should be classified.Comment: 15 pages, 5 figure
Advanced Computing and Related Applications Leveraging Brain-inspired Spiking Neural Networks
In the rapid evolution of next-generation brain-inspired artificial
intelligence and increasingly sophisticated electromagnetic environment, the
most bionic characteristics and anti-interference performance of spiking neural
networks show great potential in terms of computational speed, real-time
information processing, and spatio-temporal information processing. Data
processing. Spiking neural network is one of the cores of brain-like artificial
intelligence, which realizes brain-like computing by simulating the structure
and information transfer mode of biological neural networks. This paper
summarizes the strengths, weaknesses and applicability of five neuronal models
and analyzes the characteristics of five network topologies; then reviews the
spiking neural network algorithms and summarizes the unsupervised learning
algorithms based on synaptic plasticity rules and four types of supervised
learning algorithms from the perspectives of unsupervised learning and
supervised learning; finally focuses on the review of brain-like neuromorphic
chips under research at home and abroad. This paper is intended to provide
learning concepts and research orientations for the peers who are new to the
research field of spiking neural networks through systematic summaries
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