About | De Novo

goni bori

Goni and Bori, my cockatiels. They love getting head scritches.


I am Park, Sihyung, an M.S. student majoring in Statistics.

De Novo is a word frequently used in Biology, which means “of new”, “from the beginning” in Latin. This blog is a journal written by a student who wants to make a living by studying and doing research. Contents are mostly about some random interesting or important ideas I encountered while studying and doing research. This is my attempt to build up and organize new (and hopefully meaningful) knowledge from scratch.

Hope my knowledge helps someone, including my future self.


  • Review of Probability Theory I, Spring 2020. [PDF]
  • Review of Probability Theory II, Fall 2020. [PDF]
  • Understanding Latent Dirichlet Allocation. [PDF]