Hi all,
Could anyone tell me which is the record of computing an SVD of a large sparse
matrix and where was achieved?
Thanks and regards.
Pedro.
a single thread? This last is probably the fastest of
all of the options.
On Sun, Sep 9, 2012 at 11:29 AM, PEDRO MANUEL JIMENEZ RODRIGUEZ
pmjimenez1...@hotmail.com wrote:
Hi all,
I'm trying to set all values of a SparseMatrix structure using multiple
threads but I'm getting an error
Hi all,
I'm trying to set all values of a SparseMatrix structure using multiple threads
but I'm getting an error of ArrayIndexOutBoundsException even when access
indexes are correct. In fact, when I subtitude SparseMatrix structure for a
double array I didn't get any error.
Does any one have
. No, it doesn't
accept some text-based format.
On Wed, Mar 7, 2012 at 8:41 PM, PEDRO MANUEL JIMENEZ RODRIGUEZ
pmjimenez1...@hotmail.com wrote:
Sorry but I can't understand how to do it.
I have single separated-space text file with my input matrix. To run
DistributedRowMatrix with that file I
an IntWritable, and
that means it expects input as a sequence file, via
SequenceFileInputFormat.
On Tue, Mar 6, 2012 at 7:21 PM, PEDRO MANUEL JIMENEZ RODRIGUEZ
pmjimenez1...@hotmail.com wrote:
Thanks for reply.
I was doing something wrong. I have to convert my input file to a seqFile
with the DRM code or HDFS management. Try
running it without HDFS or a Hadoop cluster, with local files and in
pseudo-distributed mode. This way you can narrow the problem to one of
the above.
On Sat, Mar 3, 2012 at 10:13 AM, PEDRO MANUEL JIMENEZ RODRIGUEZ
pmjimenez1...@hotmail.com wrote:
Hi
Hi everyone!
I'm trying to use DistributedRowMatrix in my class code but I'm getting the
same error all the time: FileNotFoundException
I have put a file in my hdfs directory under /user/hduser/diffuse. And I run
the progam with diffuse as input and output directory. The code looks like:
, 2010 at 11:55 AM, PEDRO MANUEL JIMENEZ RODRIGUEZ
pmjimenez1...@hotmail.com wrote:
Well, this is in the worst case but it could be possible.
I'm not going to make any tests with this amount of data because for me is
impossible but this project is part of a bigger one and they would have
.
Are there many totally zero rows?
Can you estimate how many non-zero elements you have in all?
On Mon, Nov 22, 2010 at 1:07 PM, PEDRO MANUEL JIMENEZ RODRIGUEZ
pmjimenez1...@hotmail.com wrote:
Hi Ted,
I can't give you an exact amount but more or less it could be around 10^5
non-zero elements per
eigenvalues.
One other thing you need to remember about the LanczosSolver: if your input
matrix is symmetric, pass in the boolean isSymmetric=true to the solve()
method, or else you'll get wrong values.
-jake
On Mon, Nov 22, 2010 at 1:07 PM, PEDRO MANUEL JIMENEZ RODRIGUEZ
pmjimenez1
: ted.dunn...@gmail.com
Date: Fri, 19 Nov 2010 13:34:19 -0800
Subject: Re: Lanczos Algorithm
To: user@mahout.apache.org
How many non-zero elements?
On Fri, Nov 19, 2010 at 12:34 PM, PEDRO MANUEL JIMENEZ RODRIGUEZ
pmjimenez1...@hotmail.com wrote:
I was talking about 10^9 rows and 10^9
Dear Mahout developers,
I'm a Computer Science student from the National University of Distance
Education in Spain. I'm currently developing my final year project which is
about Diffusion Maps.
This method is used for dimensionality reduction and it uses the Lanczos
algorithm during its
the results as you have, so i'm willing to read
the answers to these questions :)
Best.
Fernando.
2010/11/19 PEDRO MANUEL JIMENEZ RODRIGUEZ pmjimenez1...@hotmail.com
Dear Mahout developers,
I'm a Computer Science student from the National University of Distance
Education
I was talking about 10^9 rows and 10^9 columns
From: ted.dunn...@gmail.com
Date: Fri, 19 Nov 2010 12:07:16 -0800
Subject: Re: Lanczos Algorithm
To: user@mahout.apache.org
On Fri, Nov 19, 2010 at 11:17 AM, PEDRO MANUEL JIMENEZ RODRIGUEZ
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