chouxiaowen

chouxiaowen on Hacker News

Data Analysis: Turing Awards Winners 1966-2013 by Zodiac Sign

Posted by chouxiaowen on Monday December 22, 2014 @06:57PM
from the tableausoftware.com dept.

http://www.tableausoftware.com/public/gallery/turingawards

( Read More... | no comments | 2 points | on HN )

Groupon Revenue Tops Estimates, Lefkofsky Named CEO

Posted by chouxiaowen on Wednesday August 07, 2013 @11:54PM
from the bloomberg.com dept.

http://www.bloomberg.com/news/2013-08-07/groupon-revenue-tops-estimates-lefkofsky-named-ceo.html

( Read More... | no comments | on HN )

Re:Columnar Storage on Thursday January 31, 2013 @01:27AM (#5143806)

The id column and row header (as depicted in the post) can significantly waste I/O bandwidth.

See the paper "Column-stores vs. row-stores: how different are they really?" in SIGMOD 2008 for performance comparisons between C-store and approaches of emulating column-store in row-store databases.