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statistical physics

Numerical stability showcase: Ranking with SoftMax or Boltzmann factor

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Preamble Image: Babylonian table for computation (Wikipedia)Probably, one of the most important aspects of computational work in quantitative fields, such as physics and data sciences is stability of numerical computations. It implies given inputs, outputs should not wildly deviates to large...

Inducing time-asymmetry on reversible classical statistical mechanics via Interventional Thermodynamic Ensembles (ITEs).

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Preamble Probably, one of the most fundamental issue in classical statistical mechanics is extending reversible dynamics to many-particle systems that behaves irreversibly. In other words, how time's arrow appears even though constituted systems evolves in reversible dynamics. This is the main...

Loschimidt's Paradox and Causality: Can we establish Pearlian expression for Boltzmann's H-theorem?

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Boltzmann (Wikipedia)Post covers the papers: H-theorem do-conjecture, M. Süzen,  arxiv:2310.01458 (2023) PreambleProbably the most important achievement for humans is the ability to produce scientific discoveries, that  helps us objectively understand how nature works and build artificial tools...

Differentiating ensembles and sample spaces: Alignment between statistical mechanics and probability theory

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Preamble Sample space is the primary concept introduced in any probability and statistics books and in papers. However, there needs to be more clarity about what constitutes a sample space in general: there is no explicit distinction between the unique event set and the replica sets. The...

Bayesian rabbit holes: Decoding conditional probability with non-commutative algebra

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Preamble    The White Rabbit (Wikipedia)A novice analyst or even experienced (data) scientist would have thought that the bar notation $|$ in representing conditional probability carries some different operational mathematics. Primarily when written in explicit distribution functions $p(x|y)$....

A misconception in ergodicity: Identify ergodic regime not ergodic process

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Preamble     Figure 1: Two observable's approach to ergodicity for Bernoulli Trials. Ergodicity appears in many fields, in physics, chemistry and natural sciences but in economics to machine learning as well. Recall that, ergodicity in physics and mathematical definition diverges significantly due...

Physics origins of the most important statistical ideas of recent times

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Figure: Maxwell's handwritings, state diagram (Wikipedia)PreambleThe modern statistics now move into an emerging field called data science that amalgamate many different fields from high performance computing to control engineering. However, the emergent behaviour from researchers in machine...

Deep Learning in Mind a Gentle Introduction to Spectral Ergodicity

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Preamble    Figure: Monalisa on Eigenvector grids (Wikipedia)In the post, A New Matrix Mathematics for Deep Learning : Random Matrix Theory of Deep Learning, we have outlined a new mathematical concepts that are aimed at deep learning but in general belonging to applied mathematics. Here, we dive...

Book review: A tutorial introduction to the mathematics of deep learning

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Preamble Artificial Intelligence Engines:An introduction to the Mathematics of Deep Learning by Dr James V. Stone the book and Github repository. (c) 2019 Sebtel Press Deep learning and associated connectionist approaches are now applied routinely in industry and academic research from image...