JSON Wrangling

JSON Wrangling

musicbrains doesn't have API key, so we free to search the music wiki through their API/metadata

CSV Wrangling

CSV Wrangling



  • In liine 15, error will show up because it show 2 field with comma delimiter
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Fundamentals

Fundamentals
  • every Data that handled by humans have possibility of errors in it
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Bayesian Learning

Today i want to talk about bayesian learning. Bayes' theorem has been around for a while. The name itself is after the statiscian Thomas Bayes. Interesting enough, He died before even published his major scientific achievement to the world as we know today.

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Problem Set 2

Problem Set 2






Bayesian Inference

Bayesian Inference


  • Marginalization: to put X, simply count what's not y, and what's y and x, that will produce x
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Joint Distribution

Joint Distribution
  • Probabilistic quantities, represent and reason? Called Bayesian Networks
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Infinite Hypothesis Spaces

Infinite Hypothesis Spaces
How to count m if the set of hypothesis is infinity?





  • VC stated that eventhough the hypothesis space is infinite, as long as the sample is finite, then we can know how much the samples do we need.
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Pac Learning

Pac Learning

  • training error: the training example missclasfied by h (true hypothesis if got none)
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Learning Theory

Learning Theory
takes closest neighbors



  • The first one is decision trees. First it split the region 1/3 left, 2/3 right. then make a horizontal split. and finally another vertical split. So it's splitting into two region, on and on.
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