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@dbtsai dbtsai commented May 8, 2014

Documentation for L-BFGS, and an example of training binary L2 logistic regression using L-BFGS.

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Either L-BFGS or The L-BFGS method.

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appendBias puts 1.0 at the end of the vector. So the slicing here needs update.

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Why don't we have prependOne in the MLUtils as well? Due to the scope, users can not use prependOne. It's more intuitive to have intercept as first element.

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This is the first time L-BFGS appears in the guide. So let us use Limited-memory BFGS (L-BFGS). Well, it is not necessary to explain BFGS ..

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mengxr commented May 12, 2014

LGTM. Thanks!

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rxin commented May 13, 2014

I've merged this. Thanks.

asfgit pushed a commit that referenced this pull request May 13, 2014
Documentation for L-BFGS, and an example of training binary L2 logistic regression using L-BFGS.

Author: DB Tsai <[email protected]>

Closes #702 from dbtsai/dbtsai-lbfgs-doc and squashes the following commits:

0712215 [DB Tsai] Update
38fdfa1 [DB Tsai] Removed extra empty line
5745b64 [DB Tsai] Update again
e9e418e [DB Tsai] Update
7381521 [DB Tsai] L-BFGS Documentation

(cherry picked from commit 5c2275d)
Signed-off-by: Reynold Xin <[email protected]>
@asfgit asfgit closed this in 5c2275d May 13, 2014
@dbtsai dbtsai deleted the dbtsai-lbfgs-doc branch May 21, 2014 22:59
pdeyhim pushed a commit to pdeyhim/spark-1 that referenced this pull request Jun 25, 2014
Documentation for L-BFGS, and an example of training binary L2 logistic regression using L-BFGS.

Author: DB Tsai <[email protected]>

Closes apache#702 from dbtsai/dbtsai-lbfgs-doc and squashes the following commits:

0712215 [DB Tsai] Update
38fdfa1 [DB Tsai] Removed extra empty line
5745b64 [DB Tsai] Update again
e9e418e [DB Tsai] Update
7381521 [DB Tsai] L-BFGS Documentation
Alexis-D pushed a commit to Alexis-D/spark that referenced this pull request Nov 16, 2020
…#702)

* Add failing test

* More generously infer columns as strings if Arrow thought they are binary

* Add failing test for true binary values

* Infer 'mixed' columns by checking the first value

* Update FORK.md
RolatZhang pushed a commit to RolatZhang/spark that referenced this pull request Dec 8, 2023
RolatZhang pushed a commit to RolatZhang/spark that referenced this pull request Dec 11, 2023
turboFei pushed a commit to turboFei/spark that referenced this pull request Nov 6, 2025
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4 participants