I run the same command of you, and get this error. Don't know why.
10/08/06 11:46:05 ERROR driver.MahoutDriver: MahoutDriver failed with args:
[fpg, -i, accidents, -o, pattern, -k, 50, -method, mapreduce, -g, 20,
-regex, [ ], -s, 2]
null
Exception in thread "main" java.lang.NullPointerException
Hi Laslo,
You are right that given the way that Lanczos spits out eigenvectors, the
way to calculate U_k using primitive operations (i.e. those available on
DistributedRowMatrix) is to do two transpose() operations and then a
times() operation. Then of course, you need to do the S^-1 multiplica
Laszlo,
You are entirely correct, the output of DistributedRowMatrix.times() is
creating
an output matrix which thinks it has a cardinality different then what the
data in
it actually is.
Thanks for the catch!
-jake
On Wed, Aug 4, 2010 at 5:46 AM, Laszlo Dosa wrote:
> Hi,
>
>
>
> I try t
