8 Commits

Author SHA1 Message Date
Jiaming Yuan
c2b3a13e70
[breaking][skl] Remove parameter serialization. (#8963)
- Remove parameter serialization in the scikit-learn interface.

The scikit-lear interface `save_model` will save only the model and discard all
hyper-parameters. This is to align with the native XGBoost interface, which distinguishes
the hyper-parameter and model parameters.

With the scikit-learn interface, model parameters are attributes of the estimator. For
instance, `n_features_in_`, `n_classes_` are always accessible with
`estimator.n_features_in_` and `estimator.n_classes_`, but not with the
`estimator.get_params`.

- Define a `load_model` method for classifier to load its own attributes.

- Set n_estimators to None by default.
2023-03-27 21:34:10 +08:00
Jiaming Yuan
cf70864fa3
Move Python testing utilities into xgboost module. (#8379)
- Add typehints.
- Fixes for pylint.

Co-authored-by: Hyunsu Philip Cho <chohyu01@cs.washington.edu>
2022-10-26 16:56:11 +08:00
Jiaming Yuan
fffb1fca52
Calculate base_score based on input labels for mae. (#8107)
Fit an intercept as base score for abs loss.
2022-09-20 20:53:54 +08:00
Philip Hyunsu Cho
ad1a527709
Enable loading model from <1.0.0 trained with objective='binary:logitraw' (#6517)
* Enable loading model from <1.0.0 trained with objective='binary:logitraw'

* Add binary:logitraw in model compatibility testing suite

* Feedback from @trivialfis: Override ProbToMargin() for LogisticRaw

Co-authored-by: Jiaming Yuan <jm.yuan@outlook.com>
2020-12-16 16:53:46 -08:00
Qi Zhang
989ddd036f
Swap byte-order in binary serializer to support big-endian arch (#5813)
* fixed some endian issues

* Use dmlc::ByteSwap() to simplify code

* Fix lint check

* [CI] Add test for s390x

* Download latest CMake on s390x

* Fix a bug in my code

* Save magic number in dmatrix with byteswap on big-endian machine

* Save version in binary with byteswap on big-endian machine

* Load scalar with byteswap in MetaInfo

* Add a debugging message

* Handle arrays correctly when byteswapping

* EOF can also be 255

* Handle magic number in MetaInfo carefully

* Skip Tree.Load test for big-endian, since the test manually builds little-endian binary model

* Handle missing packages in Python tests

* Don't use boto3 in model compatibility tests

* Add s390 Docker file for local testing

* Add model compatibility tests

* Add R compatibility test

* Revert "Add R compatibility test"

This reverts commit c2d2bdcb7dbae133cbb927fcd20f7e83ee2b18a8.

Co-authored-by: Qi Zhang <q.zhang@ibm.com>
Co-authored-by: Hyunsu Cho <chohyu01@cs.washington.edu>
2020-08-18 14:47:17 -07:00
Philip Hyunsu Cho
12110c900e
[CI] Make Python model compatibility test runnable locally (#5941) 2020-07-25 16:58:02 -07:00
Jiaming Yuan
9e1b29944e
Fix loading old model. (#5724)
* Add test.
2020-05-31 14:55:32 +08:00
Jiaming Yuan
911a902835
Merge model compatibility fixes from 1.0rc branch. (#5305)
* Port test model compatibility.
* Port logit model fix.

https://github.com/dmlc/xgboost/pull/5248
https://github.com/dmlc/xgboost/pull/5281
2020-02-13 20:41:58 +08:00