FIX remove lambdas from text preprocessing #14430
Merged
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
rth
reviewed
Jul 22, 2019
Member
rth
left a comment
There was a problem hiding this comment.
Thanks for looking into it!
Could you please run benchmarks/bench_text_vectorizers.py before and after this PR and report results?
| return lambda doc: self._char_wb_ngrams( | ||
| preprocess(self.decode(doc))) | ||
| return partial(_analyze, ngrams=self._char_wb_ngrams, | ||
| preprocessor=preprocess, decoder=self.decode) |
Member
There was a problem hiding this comment.
Side note: this is really a use-case for toolz.functoolz.compose a shame that we can't use it.
Contributor
Author
|
Sure thing! BeforeAfter |
jnothman
reviewed
Jul 23, 2019
rth
approved these changes
Jul 25, 2019
Member
rth
left a comment
There was a problem hiding this comment.
Thanks @deniederhut !
I'm not overly enthusiastic about the addition of _preprocess and _analyze function, but I don't see another way of fixing pickling.
Unless we ask people to use cloudpickle?
thomasjpfan
reviewed
Jul 25, 2019
Member
|
Please add an entry to the change log at |
Contributor
Author
|
Hm... Circle is showing Does this need to be rebased? |
Member
|
Please resolve conflicts (hopefully that would also fix CI by merging master in). |
Lambda functions are non-serializable under the stdlib pickle module. This commit replaces the lambdas found in three text preprocessing functions with hidden functions for chaining a sequence of preprocessing steps that can be partialed where appropriate. Closes scikit-learn#12833
The function has been modified, so testing for identity is no longer appropriate.
b6dc6fe to
07d7cf4
Compare
Contributor
Author
|
Yup! That did the trick for the CI |
rth
approved these changes
Aug 1, 2019
thomasjpfan
approved these changes
Aug 1, 2019
Member
|
Thank you @deniederhut! |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
4 participants
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Lambda functions are non-serializable under the stdlib pickle
module. This commit replaces the lambdas found in three text
preprocessing functions with hidden functions for chaining
a sequence of preprocessing steps that can be partialed where
appropriate.
Reference Issues/PRs
Closes #12833
What does this implement/fix? Explain your changes.
Instead of composing functions with lambdas, create chains
of preprocessing steps inside single functions that can
be decomposed with partialing.