251014 daily log

1. myledger project by android studio

2. supervised machine learning

    - regression and classification (coursera / andrew ng) : vectorization - linear regression with multiple variables

    - feature scailing : normalization (mean, z), setting alpha(learning rate)

3. rosen discrete mathematics : proof by contradiction, proof of equivalence, counterexample, begging the question, circular reasoning

4.java : method overriding, final class/method, protected classifier, baekjoon 1620