Yes, here the base doesn't matter as it just multiplies all results by a constant factor. Math libraries tend to have ln, not log10 or log2. ln is often the more, er, natural base for several computations. So I would assume that log = ln in the context of ML.
On Fri, Oct 31, 2014 at 11:31 AM, Andrejs Abele <andr...@sindicetech.com> wrote: > I found my problem. I assumed based on TF-IDF in Wikipedia , that log base > 10 is used, but as I found in this discussion, in scala it is actually ln > (natural logarithm). --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@spark.apache.org For additional commands, e-mail: user-h...@spark.apache.org
