Hi Amit,
You are right, the non-corated items are not filtered out in the
distributed implementation.
--sebastian
On 26.11.2013 20:51, Amit Nithian wrote:
Hi all,
Apologies if this is a repeat question as I just joined the list but I have
a question about the way that metrics like Cosine
Thanks Sebastian! Is there a particular reason for that?
On Nov 27, 2013 7:47 AM, Sebastian Schelter ssc.o...@googlemail.com
wrote:
Hi Amit,
You are right, the non-corated items are not filtered out in the
distributed implementation.
--sebastian
On 26.11.2013 20:51, Amit Nithian wrote:
Yes, it is due to the parallel algorithm which only looks at co-ratings
from a given user.
On 27.11.2013 15:02, Amit Nithian wrote:
Thanks Sebastian! Is there a particular reason for that?
On Nov 27, 2013 7:47 AM, Sebastian Schelter ssc.o...@googlemail.com
wrote:
Hi Amit,
You are right,
Hell Ted,
Are we to assume that SGD is still a work in progress and implementations (
Cross Fold, Online, Adaptive ) are too flawed to be realistically used ?
The evolutionary algorithm seems to be the core of OnlineLogisticRegression,
which in turn builds up to Adaptive/Cross Fold.
b) for truly
Sorry to spam, I never meant the Hello to come out as Hell. Given a
little disappointment in the mail, I figure I rather spam than be
misunderstood,
On Wed, Nov 27, 2013 at 10:07 AM, Vishal Santoshi vishal.santo...@gmail.com
wrote:
Hell Ted,
Are we to assume that SGD is still a work in
Comparing this against the non distributed (taste) gives different answers
for item item similarity as of course the non distributed looks only at
corated items. I was more wondering if this difference in practice mattered
or not.
Also I'm confused on how you can compute the Pearson similarity
Hi Amit,
Yes, it gives different results. However in practice, most people don't
do rating prediction with Pearson coefficient, but use count-based
measures like the loglikelihood ratio test.
The distributed code doesn't look at vectors of different lengths, but
simply assumes non-existent
Hey Sebastian,
Thanks again. Actually I'm glad that I am talking to you as it's your paper
and presentation I have questions with! :-)
So to clarify my question further, looking at this presentation (
http://isabel-drost.de/hadoop/slides/collabMahout.pdf) you have the
following user x item
No problem at all. Kind of funny.
On Wed, Nov 27, 2013 at 7:08 AM, Vishal Santoshi
vishal.santo...@gmail.comwrote:
Sorry to spam, I never meant the Hello to come out as Hell. Given a
little disappointment in the mail, I figure I rather spam than be
misunderstood,
On Wed, Nov 27, 2013
On Wed, Nov 27, 2013 at 7:07 AM, Vishal Santoshi vishal.santo...@gmail.com
Are we to assume that SGD is still a work in progress and implementations (
Cross Fold, Online, Adaptive ) are too flawed to be realistically used ?
They are too raw to be accepted uncritically, for sure. They have
Hello,
What are the necessary conditions for two vectors(any vector that extends
DenseVector) to be equal? I know both values and cardinality should be
equal. Is there something else?
Thanks,
Tharindu.
https://builds.apache.org/job/Mahout-Quality/ws/trunk/math/target/site/apidocs/org/apache/mahout/math/DenseVector.html#equals%28java.lang.Object%29
On Wed, Nov 27, 2013 at 10:54 PM, Tharindu Rusira
tharindurus...@gmail.comwrote:
Hello,
What are the necessary conditions for two vectors(any
Hi all,
I'm working on Mahout 0.9-SNAPSHOT version checked out from the svn trunk.
The following code generates java.lang.NoClassDefFoundError:
com/google/common/base/Preconditions where b is supposed to be true
(because both cardinality and the values are same in the two vectors dv and
sv)
//
you r missing Google Guava library which has these classes. R u running a mvn
build on Mahout snapshot?
On Thursday, November 28, 2013 1:56 AM, Tharindu Rusira
tharindurus...@gmail.com wrote:
Hi all,
I'm working on Mahout 0.9-SNAPSHOT version checked out from the svn trunk.
The following
Yes that's the exact issue Suneel, it was a careless mistake while adding
projects to Eclipse that I missed those .jars.
I even messed with the code to find a workaround so that it does not
require these Precondition checks. (I've attached a patch if you are
interested) :)
Thanks a lot.
-Tharindu
Good. (No I am not interested in the patch, Thanks :) )
On Thursday, November 28, 2013 2:54 AM, Tharindu Rusira
tharindurus...@gmail.com wrote:
Yes that's the exact issue Suneel, it was a careless mistake while adding
projects to Eclipse that I missed those .jars.
I even messed with the
16 matches
Mail list logo
