U of Tennessee professor Michael Berry maintains a good site regarding
software for computing SVD on large, sparse matrices:
http://www.cs.utk.edu/~lsi/
The site also points to the LSI patent.
FWIW it's very easy to extract term-doc counts from a lucene index and
format them for softw
On Dec 14, 2006, at 11:16 AM, Soeren Pekrul wrote:
it is possible to extract the matrix from the indexing file?
I don’t know any API to extract the matrix from the index file
directly.
How could we make it work to write an open source decomposed vector
model search engine a la LSA witho
mariolone wrote:
They are successful to extract the matrix.
But with collections of large documents is not one too much expensive
solution?
I have a quite small collection with 14,960 documents and 29,828 unique
terms. If I remember right it took a few minutes on a normal laptop
computer to
Thanks for the aid, Soren!!!
They are successful to extract the matrix.
But with collections of large documents is not one too much expensive
solution?
it is possible to extract the matrix from the indexing file?
Mario
Sören Pekrul wrote:
>
> Hello Mario,
>
> I had a similar problem a few
Hello Mario,
I had a similar problem a few weeks ago (thread "How to get Term Weights
(document term matrix)?", 2006-11-02,
http://www.gossamer-threads.com/lists/lucene/java-user/41726).
I think there is no simple function creating a document term matrix or
accessing it. I extracted the matr
