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https://github.com/nok/sklearn-porter

Transpile trained scikit-learn estimators to C, Java, JavaScript and others.
https://github.com/nok/sklearn-porter

data-science machine-learning scikit-learn sklearn

Last synced: 26 days ago
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Transpile trained scikit-learn estimators to C, Java, JavaScript and others.

Host: GitHub
URL: https://github.com/nok/sklearn-porter
Owner: nok
License: bsd-3-clause
Created: 2016-06-22T22:21:34.000Z (over 8 years ago)
Default Branch: main
Last Pushed: 2024-06-12T09:16:57.000Z (5 months ago)
Last Synced: 2024-09-30T16:03:18.072Z (about 1 month ago)
Topics: data-science, machine-learning, scikit-learn, sklearn
Language: Python
Homepage:
Size: 2.91 MB
Stars: 1,284
Watchers: 32
Forks: 170
Open Issues: 45
Metadata Files:
- Readme: readme.md
- Changelog: changelog.md
- License: LICENSE

Awesome Lists containing this project

awesome - sklearn-porter - Transpile trained scikit-learn estimators to C, Java, JavaScript and others. (Python)
awesome-machine-learning-engineering - sklearn-porter - learn estimators to C, Java, JavaScript and others (Software / Serialising and transpiling models)
awesome-list - sklearn-porter - Transpile trained scikit-learn estimators to C, Java, JavaScript and others. (Machine Learning Framework / General Purpose Framework)
awesome-python-machine-learning-resources - GitHub - 50% open · ⏱️ 22.05.2022): (模型序列化和转换)

README

# sklearn-porter

[![Build Status stable branch](https://img.shields.io/travis/nok/sklearn-porter/stable.svg)](https://travis-ci.org/nok/sklearn-porter)
[![codecov](https://codecov.io/gh/nok/sklearn-porter/branch/stable/graph/badge.svg)](https://codecov.io/gh/nok/sklearn-porter)
[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/nok/sklearn-porter/release/1.0.0?filepath=examples/basics/index.pct.ipynb)
[![PyPI](https://img.shields.io/pypi/v/sklearn-porter.svg?color=blue)](https://pypi.python.org/pypi/sklearn-porter)
[![PyPI](https://img.shields.io/pypi/pyversions/sklearn-porter.svg)](https://pypi.python.org/pypi/sklearn-porter)
[![GitHub license](https://img.shields.io/pypi/l/sklearn-porter.svg?color=blue)](https://raw.githubusercontent.com/nok/sklearn-porter/main/LICENSE)

Transpile trained [scikit-learn](https://github.com/scikit-learn/scikit-learn) estimators to C, Java, JavaScript and others.
It's recommended for limited embedded systems and critical applications where performance matters most.

Navigation: [Estimators](#estimators) • [Installation](#installation) • [Usage](#usage) • [Known Issues](#known-issues) • [Development](#development) • [Citation](#citation) • [License](#license)

## Estimators

This table gives an overview over all supported combinations of estimators, programming languages and templates.

Programming language

C
Go
Java
JS
PHP
Ruby

svm.SVC

✓

×
✓
✓
×
✓
✓
×
✓
✓
×
✓
✓
×
✓
✓
×

svm.NuSVC

✓

×
✓
✓
×
✓
✓
×
✓
✓
×
✓
✓
×
✓
✓
×

svm.LinearSVC

✓

×
✓
✓
×
✓
✓
×
✓
✓
×
✓
✓
×
✓
✓
×

tree.DecisionTreeClassifier

✓ᴾ

✓ᴾ
✓ᴾ
✓ᴾ
✓ᴾ
✓ᴾ
✓ᴾ
✓ᴾ
✓ᴾ
✓ᴾ
✓ᴾ
✓ᴾ
✓ᴾ
✓ᴾ
✓ᴾ
✓ᴾ
✓ᴾ

ensemble.RandomForestClassifier

×
✓ᴾ
×
×
✓ᴾ
✓ᴾ
✓ᴾ
✓ᴾ
✓ᴾ
✓ᴾ
✓ᴾ
×

ensemble.ExtraTreesClassifier

×
✓ᴾ
×
×
✓ᴾ
✓ᴾ
✓ᴾ
✓ᴾ
✓ᴾ
✓ᴾ
✓ᴾ
×

ensemble.AdaBoostClassifier

×
✓ᴾ
×
✓ᴾ
✓ᴾ
✓ᴾ

neighbors.KNeighborsClassifier

✓ᴾ
✓ᴾ
×
✓ᴾ
✓ᴾ
×
✓ᴾ
✓ᴾ
×
✓ᴾ
✓ᴾ
×
✓ᴾ
✓ᴾ
×

naive_bayes.BernoulliNB

✓ᴾ
✓ᴾ
×
✓ᴾ
✓ᴾ
×

naive_bayes.GaussianNB

✓ᴾ
✓ᴾ
×
✓ᴾ
✓ᴾ
×

neural_network.MLPClassifier

✓ᴾ
✓ᴾ
×
✓ᴾ
✓ᴾ
×

neural_network.MLPRegressor

✓
✓
×

ᴀ
ᴇ
ᴄ
ᴀ
ᴇ
ᴄ
ᴀ
ᴇ
ᴄ
ᴀ
ᴇ
ᴄ
ᴀ
ᴇ
ᴄ
ᴀ
ᴇ
ᴄ

Template

✓ = support of `predict`,　ᴾ = support of `predict_proba`,　× = not supported or feasible

ᴀ = attached model data,　ᴇ = exported model data (JSON),　ᴄ = combined model data

## Installation

Purpose
Version
Branch
Build
Command

Production
v0.7.4
stable

pip install sklearn-porter

Development
v1.0.0
main

pip install https://github.com/nok/sklearn-porter/zipball/main

In both environments the only prerequisite is `scikit-learn >= 0.17, <= 0.22`.

## Usage

### Binder

Try it out yourself by starting an interactive notebook with Binder: [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/nok/sklearn-porter/release/1.0.0?filepath=examples/basics/index.pct.ipynb)

### Basics

```python
from sklearn.datasets import load_iris
from sklearn.tree import DecisionTreeClassifier

from sklearn_porter import port, save, make, test

# 1. Load data and train a dummy classifier:
X, y = load_iris(return_X_y=True)
clf = DecisionTreeClassifier()
clf.fit(X, y)

# 2. Port or transpile an estimator:
output = port(clf, language='js', template='attached')
print(output)

# 3. Save the ported estimator:
src_path, json_path = save(clf, language='js', template='exported', directory='/tmp')
print(src_path, json_path)

# 4. Make predictions with the ported estimator:
y_classes, y_probas = make(clf, X[:10], language='js', template='exported')
print(y_classes, y_probas)

# 5. Test always the ported estimator by making an integrity check:
score = test(clf, X[:10], language='js', template='exported')
print(score)
```

### OOP

```python
from sklearn.datasets import load_iris
from sklearn.tree import DecisionTreeClassifier

from sklearn_porter import Estimator

# 1. Load data and train a dummy classifier:
X, y = load_iris(return_X_y=True)
clf = DecisionTreeClassifier()
clf.fit(X, y)

# 2. Port or transpile an estimator:
est = Estimator(clf, language='js', template='attached')
output = est.port()
print(output)

# 3. Save the ported estimator:
est.template = 'exported'
src_path, json_path = est.save(directory='/tmp')
print(src_path, json_path)

# 4. Make predictions with the ported estimator:
y_classes, y_probas = est.make(X[:10])
print(y_classes, y_probas)

# 5. Test always the ported estimator by making an integrity check:
score = est.test(X[:10])
print(score)
```

### CLI

In addition you can use the sklearn-porter on the command line. The command calls `porter` and is available after the installation.

```
porter {show,port,save} [-h] [-v]

porter show [-l {c,go,java,js,php,ruby}] [-h]

porter port [-l {c,go,java,js,php,ruby}]
[-t {attached,combined,exported}]
[--skip-warnings] [-h]

porter save [-l {c,go,java,js,php,ruby}]
[-t {attached,combined,exported}]
[--directory DIRECTORY]
[--skip-warnings] [-h]
```

You can serialize an estimator and save it locally. For more details you can read the instructions to [model persistence](http://scikit-learn.org/stable/modules/model_persistence.html#persistence-example).

```python
from joblib import dump

dump(clf, 'estimator.joblib', compress=0)
```

After that the estimator can be transpiled by using the subcommand `port`:

```bash
porter port estimator.joblib -l js -t attached > estimator.js
```

For further processing you can pass the result to another applications, e.g. [UglifyJS](https://github.com/mishoo/UglifyJS2).

```bash
porter port estimator.joblib -l js -t attached | uglifyjs --compress -o estimator.min.js
```

## Known Issues

- In some rare cases the regression tests of the support vector machine, [SVC](http://scikit-learn.org/stable/modules/generated/sklearn.svm.SVC.html) and [NuSVC](http://scikit-learn.org/stable/modules/generated/sklearn.svm.NuSVC.html), fail since `scikit-learn>=0.22`. Because of that a `QualityWarning` will be raised which should reminds you to evaluate the result by using the `test` method.

## Development

### Aliases

The following commands are useful time savers in the daily development:

```bash
# Install a Python environment with `conda`:
make setup

# Start a Jupyter notebook with examples:
make notebook

# Start tests on the host or in a separate docker container:
make tests
make tests-docker

# Lint the source code with `pylint`:
make lint

# Generate notebooks with `jupytext`:
make examples

# Deploy a new version with `twine`:
make deploy
```

### Dependencies

The prerequisite is Python 3.6 which you can install with [conda](https://docs.conda.io/en/latest/miniconda.html):

```bash
conda env create -n sklearn-porter_3.6 python=3.6
conda activate sklearn-porter_3.6
```

After that you have to install all required packages:

```bash
pip install --no-cache-dir -e ".[development,examples]"
```

### Environment

All tests run against these combinations of [scikit-learn](https://github.com/scikit-learn/scikit-learn) and Python versions:

Python

3.5
3.6
3.7
3.8

scikit-learn
0.17
cython 0.27.3
cython 0.27.3
not supported
by scikit-learn
no support
by scikit-learn

numpy 1.9.3
numpy 1.9.3

scipy 0.16.0
scipy 0.16.0

0.18
cython 0.27.3
cython 0.27.3
not supported
by scikit-learn
not supported
by scikit-learn

numpy 1.9.3
numpy 1.9.3

scipy 0.16.0
scipy 0.16.0

0.19
cython 0.27.3
cython 0.27.3
not supported
by scikit-learn
not supported
by scikit-learn

numpy 1.14.5
numpy 1.14.5

scipy 1.1.0
scipy 1.1.0

0.20
cython 0.27.3
cython 0.27.3
cython 0.27.3
not supported
by joblib

numpy
numpy
numpy

scipy
scipy
scipy

0.21
cython
cython
cython
cython

numpy
numpy
numpy
numpy

scipy
scipy
scipy
scipy

0.22
cython
cython
cython
cython

numpy
numpy
numpy
numpy

scipy
scipy
scipy
scipy

For the regression tests we have to use specific compilers and interpreters:

Name
Source
Version

GCC
https://gcc.gnu.org
10.2.1

Go
https://golang.org
1.15.15

Java (OpenJDK)
https://openjdk.java.net
1.8.0

Node.js
https://nodejs.org
12.22.5

PHP
https://www.php.net
7.4.28

Ruby
https://www.ruby-lang.org
2.7.4

Please notice that in general you can use older compilers and interpreters with the generated source code. For instance you can use Java 1.6 to compile and run models.

### Logging

You can activate logging by changing the option `logging.level`.

```python
from sklearn_porter import options

from logging import DEBUG

options['logging.level'] = DEBUG
```

### Testing

You can run the unit and regression tests either on your local machine (host) or in a separate running Docker container.

```bash
pytest tests -v \
--cov=sklearn_porter \
--disable-warnings \
--numprocesses=auto \
-p no:doctest \
-o python_files="EstimatorTest.py" \
-o python_functions="test_*"
```

```bash
docker build \
-t sklearn-porter \
--build-arg PYTHON_VER=${PYTHON_VER:-python=3.6} \
--build-arg SKLEARN_VER=${SKLEARN_VER:-scikit-learn=0.21} \
.

docker run \
-v $(pwd):/home/abc/repo \
--detach \
--entrypoint=/bin/bash \
--name test \
-t sklearn-porter

docker exec -it test ./docker-entrypoint.sh \
pytest tests -v \
--cov=sklearn_porter \
--disable-warnings \
--numprocesses=auto \
-p no:doctest \
-o python_files="EstimatorTest.py" \
-o python_functions="test_*"

docker rm -f $(docker ps --all --filter name=test -q)
```

## Citation

If you use this implementation in you work, please add a reference/citation to the paper. You can use the following BibTeX entry:

```bibtex
@unpublished{sklearn_porter,
author = {Darius Morawiec},
title = {sklearn-porter},
note = {Transpile trained scikit-learn estimators to C, Java, JavaScript and others},
url = {https://github.com/nok/sklearn-porter}
}
```

## License

The package is Open Source Software released under the [BSD 3-Clause](LICENSE) license.