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A statistical–mechanical view on source coding: physical compression and data compression [PDF]
Journal of Statistical Mechanics: Theory and Experiment, 2011 We draw a certain analogy between the classical information-theoretic problem of lossy data compression (source coding) of memoryless information sources and the statistical mechanical behavior of a certain model of a chain of connected particles (e.g., a polymer) that is subjected to a contracting force. The free energy difference pertaining to such a
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Complexity and Entropy in Legal Language
Frontiers in Physics, 2021 We study the language of legal codes from different countries and legal traditions, using concepts from physics, algorithmic complexity theory and information theory. We show that vocabulary entropy, which measures the diversity of the author’s choice of
Roland Friedrich
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Data‐driven performance metrics for neural network learning
International Journal of Adaptive Control and Signal Processing, EarlyView., 2023 Summary Effectiveness of data‐driven neural learning in terms of both local mimima trapping and convergence rate is addressed. Such issues are investigated in a case study involving the training of one‐hidden‐layer feedforward neural networks with the extended Kalman filter, which reduces the search for the optimal network parameters to a state ...
Angelo Alessandri +2 more
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Design considerations for gallium arsenide pulse compression photoconductive switch
Journal of Applied Physics, 2022 In this paper, we present the physics and design-space exploration of a novel pulse compression photoconductive switch (PCPS) using semi-insulating gallium arsenide (GaAs) operating in the negative differential mobility (NDM) regime of electron transport.
Yi Dong +5 more
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Statistical-Physics-Based Reconstruction in Compressed Sensing
Physical Review X, 2012 20 pages, 8 figures, 3 tables.
Yifan Sun +5 more
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New Journal of Physics, 2017 We have theoretically and experimentally demonstrated an RF compression-based jitter-amplification effect in high-brightness electron source ultrafast electron diffraction (UED), which degrades the temporal resolution significantly.
Yingpeng Qi +7 more
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Advanced Engineering Materials, EarlyView., 2023 A novel method for tracking structural changes in gels using widely accessible microcomputed tomography is presented and validated for various hydro‐, alco‐, and aerogels. The core idea of the method is to track positions of micrometer‐sized tracer particles entrapped in the gel and relate them to the density of the gel network.
Anja Hajnal +3 more
wiley +1 more source
Atomic insights into the quasi-elastic response in shock reloading of shocked metals
Results in Physics, 2021 The quasi-elastic response has drawn much attention as an interesting phenomenon in physics of shock wave. It has been revealed that heterogeneity features such as defects on the mesoscale play important roles in the quasi-elastic response of shocked ...
Shengtao Wang +6 more
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Symplectic encoders for physics-constrained variational dynamics inference
Scientific Reports, 2023 We propose a new variational autoencoder (VAE) with physical constraints capable of learning the dynamics of Multiple Degree of Freedom (MDOF) dynamic systems.
Kiran Bacsa +4 more
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The physical dimensions of the compressed breast
The British Journal of Radiology, 1991 The success of the National Breast Screening Program relies on accurate dose measurements, essential for any risk–benefit analysis and radiation protection considerations (Forrest, 1986). This need to measure absorbed doses within and around the irradiated breast necessitates the use of carefully selected materials from which phantoms and radiation ...
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