捡芝麻拾谷子

This week, I got a chance to study a dataset of 13 million rows. Luckily, the file has no strings in it. So my (local) R reads it just fine,...

I just finished my Omniture SiteCatalyst training in Mclean, VA a few days ago. It was ok (somehow boring), we only went through how to clic...

Yesterday I opened my business week magazine and saw this picture in an article talking about CES in Las Vegas this year. The picture compar...