↓

Home ☰
Skip to primary content
Skip to secondary content
  • ABOUT US
  • PODCAST
  • THE COMIC
  • THE BOARD
  • CONTACT
  • SIGNUP
Home→Published 2014 → May

Monthly Archives: May 2014

Gradient descent vs. Coordinate descent

Posted on May 31, 2014 by Piggy
11

When it comes to function minimisation, it’s time to open a book of optimisation and linear algebra. I am currently working on variable selection and lasso-based solutions in genetics. What lasso does is basically minimising the loss function and an … Continue reading →

Posted in General, Statistics and R | Tagged convex, coordinate descent, gradient descent, lasso, minimisation, R code | 11 Replies

Why is Principal Component Analysis a bust for genetics

Posted on May 25, 2014 by Piggy
2

I am not a fan of Principal Component Analysis. At least not for big data analysis. I still find it awkward to apply such concepts to, e.g. genetic data. As a brief explanation, for given variables $ x_1 \dots x_p$, a … Continue reading →

Posted in Statistics and R | Tagged big data, genetics, PCA, Principal Component Analysis, R, statistics | 2 Replies
  • ABOUT US
  • PODCAST
  • THE COMIC
  • THE BOARD
  • CONTACT
  • SIGNUP

Follow us

  • View Piggy-233163850107403’s profile on Facebook
  • View worldofpiggy’s profile on Twitter
  • View fragadaleta’s profile on LinkedIn
  • View worldofpiggy’s profile on GitHub
  • ABOUT US
  • PODCAST
  • THE COMIC
  • THE BOARD
  • CONTACT
  • SIGNUP

Get our updates

© 2010-2016 worldofpiggy.com
↑