Computing Life

总的体会就是。。。这门课再一次影响了我的三观。。。

第一次三观崩溃是optimization。在上这门课以前设计算法都非常heuristic，想着第一步做这 …

I used Emacs org-mode to do time management before, with dedicated project plan, autogenerated schedule, and filled in how my time was spent every hour. Yeah, this is fancy, geeky, cool. Looks efficient. Until one day I got tired of it.

Then I changed to pen and paper. No staring …

Sometimes a small-world panorama is quite stunning. For comparison, a regular panorama is shown below.

Spent about half an hour to do experiments and finally get a program to convert to regular panorama to small-world style.

The key is coordinate system transform, from rectangular to polar. This is pretty intuitive …

[Update2] I used the library eigen to reimplement the algorithm, reducing the code from 84 lines to 41 lines (wow), and time increases 11%. Looks acceptable, with similar workload as unoptimized C#, but the same speed as heavily optimized C# (with 164 lines of code and unsafe compilation). What's even …

Finally time for an upgrade of our Beamer Writer. I added two features recently.

• Support of equations. Now when you enter \[x^2\] in the input textbox, it will be rendered as it is, i.e., \[x^2\] rather than \item \[x^2\] like we did before. This will make …