Particle Filter

State Space Model (SSM) SSM is the model A system in which the variables of actual state and the variables that can be actually observed are diff...

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Free energy and Bayes inference

平均場近似と自由エネルギー ある変数のとりうるすべての状態(実現値)に対して,何らかのエネルギー関数が与えられたとする.このとき,変数のGibbs分布(Boltzmann分布): を考える.このとき,Gibbs分布と任意の近似分布とのKL-divergence: は以下のように分...

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Bash script for git push

In Git, commit messages are very imoportant to avoid confused commit log in your branch. But in some small projects that you develope alone, thinking about every commit message might be dull. I usualy use the following script to send local data to the remote repository. Please try it. #!/bin/bash...

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Temperament and Scale in Music

ブルーバックス「音律と音階の科学」を読んで,面白かったのでメモ. ドレミファソラシド= CDEFGAB C, C#, D, D#, E, F, G, G#, A, A#, B   周波数(Hz) 周波数比 英 ...

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Deriving ELBO

Evidence Lower Bound (ELBO) is widely used in variational inference. Recently, according to the massive success of DeepLearning and related models, variational inference (and its technic) gains exposure in the filed of representation learning. For instance, stochastic generative models such as VAE and GAN are famous for their variational aspects....

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