tailieunhanh - R IN A NUTSHELL
It’s been over 10 years since I was first introduced to R. Back then, I was a young product development manager at DoubleClick, a company that sold advertising software for managing online ad sales. I was working on inventory prediction: estimating the number of ad impressions that could be sold for a given search term, web page, or demographic characteristic. I wanted to play with the data myself, but we couldn’t afford a piece of expensive software like SAS or MATLAB. I looked around for a little while, trying to find an open-source statistics package, and stumbled on R. Back then, R was a bit rough around. | IN A NUTSHELL A Desktop Quick Reference O REILLY Joseph Adler R IN A NUTSHELL Second Edition Joseph Adler o REILLY Beijing Cambridge Farnham Koln Sebastopol .
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