2017-02-21から1日間の記事一覧

Multiple-Column Indexes on MySQL

MySQL can use multiple-column indexes for queries that use all the columns, the first two columns, the first three columns and so on. MySQL :: MySQL 5.7 Reference Manual :: 9.3.5 Multiple-Column Indexes The following index is equivalent to…

Reversible Markov Chain

In the previous post, I introduced some of important Markov chain properties. I would like to write about a Markov chain property that is used in Markov Chain Monte Carlo(mcmc), which is reversibility. Reversibility Let is a variable of a …