This post is for recording memos of learning Octave. Installation Install cygwin. Then add octave, gnuplot, xterm, xorg-server, xinit. Operations octave:1> 5+6 ans = 11 octave:2> 1/2 ans ...

Matrix Operation Addition and Subtraction Only matrices with same dimension could be added/substract. Doing the add/subtract means each number in the first matrix will add/subtract t...

Supervised Learning Given the “right answer” for each example in the data Regression Predict Real-Valued output Linear Regression Find a linear function that best match the historical data tre...

This post is for recording the notes while reading Coding Interviews Question 1: Palindrome numbers Solution1: Convert the target number to String, compare the first letter with the last letter, ...

Network Time Protocol (NTP) is a networking protocol for clock synchronization between computer systems over packet-switched, variable-latency data networks. This post tells how to simplely setup ...

This post is the note for the algorithm course on Coursera. Here is the link for this Book. Graph Undirected Graphs Depth-First Search Visit graph from the source vertex and mark i...

Begin a new advanture! Calm down, prepare, and grab your chance! 2014.03.27 龙翔