Monthly Archives: May 2013

A comment on Andrew Ng’s explanation of the role of regularization

I started watching AN’s coursera course on Machine learning, a field I want to get into hopefully in the near future. The clarity of Andrew’s presentation kept me watching one video after another. His example of quadratic versus quartic model … Continue reading

Posted in Uncategorized | Leave a comment

Noise variance estimator for Linear regressions

A presentation should focus on a single story deeply, as opposed to be a panorama of all the work one has done so far. Today I want to demystify a fact recorded in Prof Lai and Haipeng’s book statistical methods … Continue reading

Posted in Uncategorized | Leave a comment

Markov chain mixing time bound — Doeblin technique

One of the earliest results (in fact the only one before the introduction of geometric techniques) on total variation mixing time analysis on the Kac random walk is done via the Doeblin condition in the original paper of Diaconis and … Continue reading

Posted in Uncategorized | Leave a comment