Discussion:
[Scikit-learn-general] incrementally update LDA model
Mika S
2016-01-28 00:13:58 UTC
Permalink
Hi,
Is it possible to update an LDA model online incrementally in scikit learn
(stable or dev version)?

After training the model, I want to be able to update it with a document -
get the new model as new documents keep coming.


Thanks
M
Gael Varoquaux
2016-01-28 07:12:41 UTC
Permalink
Post by Mika S
Is it possible to update an LDA model online incrementally in scikit learn
(stable or dev version)?
Yes. Use the "partial_fit" method.

Gaël
Mika S
2016-01-28 19:05:09 UTC
Permalink
http://scikit-learn.org/0.16/modules/generated/sklearn.lda.LDA.html does
not have a partial_fit method.
Though
Is it available in 0.17.1 or in a dev branch?

On Wed, Jan 27, 2016 at 11:12 PM, Gael Varoquaux <
Post by Gael Varoquaux
Post by Mika S
Is it possible to update an LDA model online incrementally in scikit
learn
Post by Mika S
(stable or dev version)?
Yes. Use the "partial_fit" method.
Gaël
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Martin Delzant
2016-01-28 19:19:33 UTC
Permalink
It's available in the last stable release : 0.17
http://scikit-learn.org/stable/modules/generated/sklearn.decomposition.LatentDirichletAllocation.html

Regards,

Martin Delzant
Post by Mika S
http://scikit-learn.org/0.16/modules/generated/sklearn.lda.LDA.html does
not have a partial_fit method.
Though
Is it available in 0.17.1 or in a dev branch?
On Wed, Jan 27, 2016 at 11:12 PM, Gael Varoquaux <
Post by Gael Varoquaux
Post by Mika S
Is it possible to update an LDA model online incrementally in scikit
learn
Post by Mika S
(stable or dev version)?
Yes. Use the "partial_fit" method.
Gaël
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Sebastian Raschka
2016-01-28 19:22:29 UTC
Permalink
Sorry to interfere, but I think we are talking about 2 different things here:
Latent Dirichlet Allocation vs. Linear Discriminant Analysis.

I think the original question was about Linear Discriminant Analysis? Isn't the current implementation the closed-form, thus it doesn't have the partial_fit?
Post by Martin Delzant
It's available in the last stable release : 0.17
http://scikit-learn.org/stable/modules/generated/sklearn.decomposition.LatentDirichletAllocation.html <http://scikit-learn.org/stable/modules/generated/sklearn.decomposition.LatentDirichletAllocation.html>
Regards,
Martin Delzant
http://scikit-learn.org/0.16/modules/generated/sklearn.lda.LDA.html <http://scikit-learn.org/0.16/modules/generated/sklearn.lda.LDA.html> does not have a partial_fit method.
Though
Is it available in 0.17.1 or in a dev branch?
Post by Mika S
Is it possible to update an LDA model online incrementally in scikit learn
(stable or dev version)?
Yes. Use the "partial_fit" method.
Gaël
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Mika S
2016-02-03 07:58:36 UTC
Permalink
I actually meant latent dirichlet allocation.

If it's a closed form then it indeed makes sense that we don't have a
partial_fit
Post by Sebastian Raschka
Latent Dirichlet Allocation vs. Linear Discriminant Analysis.
I think the original question was about Linear Discriminant Analysis?
Isn't the current implementation the closed-form, thus it doesn't have the
partial_fit?
It's available in the last stable release : 0.17
http://scikit-learn.org/stable/modules/generated/sklearn.decomposition.LatentDirichletAllocation.html
Regards,
Martin Delzant
Post by Mika S
http://scikit-learn.org/0.16/modules/generated/sklearn.lda.LDA.html does
not have a partial_fit method.
Though
Is it available in 0.17.1 or in a dev branch?
On Wed, Jan 27, 2016 at 11:12 PM, Gael Varoquaux <
Post by Gael Varoquaux
Post by Mika S
Is it possible to update an LDA model online incrementally in scikit
learn
Post by Mika S
(stable or dev version)?
Yes. Use the "partial_fit" method.
Gaël
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Mika S
2016-02-03 07:59:45 UTC
Permalink
Okay I think I got confused as well:)

So 0.17.1 has partial_fit for latent dirichlet allocation I assume
Post by Mika S
I actually meant latent dirichlet allocation.
If it's a closed form then it indeed makes sense that we don't have a
partial_fit
Post by Sebastian Raschka
Latent Dirichlet Allocation vs. Linear Discriminant Analysis.
I think the original question was about Linear Discriminant Analysis?
Isn't the current implementation the closed-form, thus it doesn't have the
partial_fit?
It's available in the last stable release : 0.17
http://scikit-learn.org/stable/modules/generated/sklearn.decomposition.LatentDirichletAllocation.html
Regards,
Martin Delzant
Post by Mika S
http://scikit-learn.org/0.16/modules/generated/sklearn.lda.LDA.html
does not have a partial_fit method.
Though
Is it available in 0.17.1 or in a dev branch?
On Wed, Jan 27, 2016 at 11:12 PM, Gael Varoquaux <
Post by Gael Varoquaux
Post by Mika S
Is it possible to update an LDA model online incrementally in scikit
learn
Post by Mika S
(stable or dev version)?
Yes. Use the "partial_fit" method.
Gaël
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Sebastian Raschka
2016-02-03 08:22:33 UTC
Permalink
haha, okay, glad it makes all sense now! For some reason, I thought you referenced sklearn.lda.LDA rather than
sklearn.decomposition.LatentDirichletAllocation, but then it’s all good now!
Post by Mika S
I actually meant latent dirichlet allocation.
If it's a closed form then it indeed makes sense that we don't have a partial_fit
Latent Dirichlet Allocation vs. Linear Discriminant Analysis.
I think the original question was about Linear Discriminant Analysis? Isn't the current implementation the closed-form, thus it doesn't have the partial_fit?
Post by Martin Delzant
It's available in the last stable release : 0.17
http://scikit-learn.org/stable/modules/generated/sklearn.decomposition.LatentDirichletAllocation.html
Regards,
Martin Delzant
http://scikit-learn.org/0.16/modules/generated/sklearn.lda.LDA.html does not have a partial_fit method.
Though
Is it available in 0.17.1 or in a dev branch?
Post by Mika S
Is it possible to update an LDA model online incrementally in scikit learn
(stable or dev version)?
Yes. Use the "partial_fit" method.
Gaël
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Andreas Mueller
2016-01-28 19:21:24 UTC
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Gael thought you meant Latent Dirichlet Allocation.
The docs you point to are for Linear Discriminant Analysis.
Linear Discriminant Analysis has indeed no partial fit. Latent Dirichlet
allocation (introduced in 0.17) has.
Post by Mika S
http://scikit-learn.org/0.16/modules/generated/sklearn.lda.LDA.html
does not have a partial_fit method.
Though
Is it available in 0.17.1 or in a dev branch?
On Wed, Jan 27, 2016 at 11:12 PM, Gael Varoquaux
Post by Mika S
Is it possible to update an LDA model online incrementally in
scikit learn
Post by Mika S
(stable or dev version)?
Yes. Use the "partial_fit" method.
Gaël
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