how to implementation latent semantic indexing in python..

[78ncp]

hi...
how to implementation algorithm latent semantic indexing in python
programming...??

thank's for daniel who answered my question before..

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[Alex Martelli]

78ncp <sa********@yahoo.comwrote:

hi...
how to implementation algorithm latent semantic indexing in python
programming...??

You may get more responses (as in, >0!-) if you give some URL about what
this algorithm is supposed to do.
Alex

[Paul Rubin]

al***@mac.com (Alex Martelli) writes:

You may get more responses (as in, >0!-) if you give some URL about what
this algorithm is supposed to do.

http://en.wikipedia.org/wiki/Latent_semantic_analysis

Very cool stuff.

[Alex Martelli]

Paul Rubin <http://ph****@NOSPAM.invalidwrote:

al***@mac.com (Alex Martelli) writes:

You may get more responses (as in, >0!-) if you give some URL about what
this algorithm is supposed to do.

http://en.wikipedia.org/wiki/Latent_semantic_analysis

Very cool stuff.

For anything related to Python and natural language processing, one
probably wants to look first for NLTK and extensions thereof; I haven't
checked, but
<http://users.tkk.fi/~jkmatila/softwa...blic/trees.htm
lclaims to include inter alia a LSI implementation as an extension of
NLTK. (We had a presentation on NLTK at Baypiggies last week, though
they didn't go into details and extensions).
Alex

[Tim Churches]

malkarouri wrote:

On 13 Jul, 17:18, 78ncp <[e-mail]:

>hi...
how to implementation algorithm latent semantic indexing in python
programming...??

Of course you are aware that LSA is patented..

There is a US patent on it, sealed in 1989, but is it patented in any
other countries? There is no such thing as a "global patent" - patents
only cover the country which issues them. There is a global patent
application process (the Patent Co-operation Treaty), but that just
establishes a priority date for the invention in each country, but the
inventor still needs to file patent applications and have them approved
(sealed) is each and every country. Did Bellcore do that back in the 1980s?

Tim C

[Alex Martelli]

Tim Churches <tc***@optushome.com.auwrote:

malkarouri wrote:

On 13 Jul, 17:18, 78ncp <[e-mail]:

hi...
how to implementation algorithm latent semantic indexing in python
programming...??

Of course you are aware that LSA is patented..

There is a US patent on it, sealed in 1989, but is it patented in any
other countries? There is no such thing as a "global patent" - patents
only cover the country which issues them. There is a global patent
application process (the Patent Co-operation Treaty), but that just
establishes a priority date for the invention in each country, but the
inventor still needs to file patent applications and have them approved
(sealed) is each and every country. Did Bellcore do that back in the 1980s?

Aren't patents supposed to last 17 years, anyway? A patent granted in
1989 should have expired in 2006, I believe (though IANAL, so...).
Alex

[Tim Churches]

Alex Martelli wrote:

Tim Churches <tc***@optushome.com.auwrote:

>malkarouri wrote:

>>On 13 Jul, 17:18, 78ncp <[e-mail]:
hi...
how to implementation algorithm latent semantic indexing in python
programming...??
Of course you are aware that LSA is patented..

There is a US patent on it, sealed in 1989, but is it patented in any
other countries? There is no such thing as a "global patent" - patents
only cover the country which issues them. There is a global patent
application process (the Patent Co-operation Treaty), but that just
establishes a priority date for the invention in each country, but the
inventor still needs to file patent applications and have them approved
(sealed) is each and every country. Did Bellcore do that back in the 1980s?

Aren't patents supposed to last 17 years, anyway? A patent granted in
1989 should have expired in 2006, I believe (though IANAL, so...).

I thought that in the US utility patents (as opposed to plant and
circuit design patents) lasted for 20 years from the filing date, which
was 15th Sept 1988 for the patent in question
(http://www.google.com/patents?vid=USPAT4839853 ). But IANAL either.

Tim C