Generalized instrumentation tooling for scikit-learn models. sklearn_instrumentation allows instrumenting the sklearn package and any scikit-learn compatible packages with estimators and transformers inheriting from sklearn.base.BaseEstimator.
Instrumentation applies decorators to methods of BaseEstimator-derived classes or instances. By default the instrumentor applies instrumentation to the following methods (except when they are properties of instances):
- fit
- fit_transform
- predict
- predict_log_proba
- predict_proba
- transform
- _fit
- _fit_transform
- _predict
- _predict_log_proba
- _predict_proba
- _transform
sklearn-instrumentation supports instrumentation of full sklearn-compatible packages, as well as recursive instrumentation of models (metaestimators like Pipeline, or even single estimators like RandomForestClassifier)
The sklearn-instrumentation package is available on pypi and can be installed using pip
pip install sklearn-instrumentationInstrument any sklearn compatible package that has BaseEstimator-derived classes.
from sklearn_instrumentation import SklearnInstrumentor
instrumentor = SklearnInstrumentor(instrument=my_instrument)
instrumentor.instrument_packages(["sklearn", "xgboost", "lightgbm"])Full example:
import logging
from sklearn.datasets import load_iris
from sklearn.decomposition import PCA
from sklearn.ensemble import RandomForestClassifier
from sklearn.pipeline import FeatureUnion
from sklearn.pipeline import Pipeline
from sklearn.preprocessing import StandardScaler
from sklearn_instrumentation import SklearnInstrumentor
from sklearn_instrumentation.instruments.logging import TimeElapsedLogger
logging.basicConfig(level=logging.INFO)
# Create an instrumentor and instrument sklearn
instrumentor = SklearnInstrumentor(instrument=TimeElapsedLogger())
instrumentor.instrument_packages(["sklearn"])
# Create a toy model for classification
ss = StandardScaler()
pca = PCA(n_components=3)
rf = RandomForestClassifier()
classification_model = Pipeline(
steps=[
(
"fu",
FeatureUnion(
transformer_list=[
("ss", ss),
("pca", pca),
]
),
),
("rf", rf),
]
)
X, y = load_iris(return_X_y=True)
# Observe logging
classification_model.fit(X, y)
# INFO:sklearn_instrumentation.instruments.logging:Pipeline.fit starting.
# INFO:sklearn_instrumentation.instruments.logging:Pipeline._fit starting.
# INFO:sklearn_instrumentation.instruments.logging:StandardScaler.fit starting.
# INFO:sklearn_instrumentation.instruments.logging:StandardScaler.fit elapsed time: 0.0006406307220458984 seconds
# INFO:sklearn_instrumentation.instruments.logging:StandardScaler.transform starting.
# INFO:sklearn_instrumentation.instruments.logging:StandardScaler.transform elapsed time: 0.0001430511474609375 seconds
# INFO:sklearn_instrumentation.instruments.logging:PCA._fit starting.
# INFO:sklearn_instrumentation.instruments.logging:PCA._fit elapsed time: 0.0006711483001708984 seconds
# INFO:sklearn_instrumentation.instruments.logging:Pipeline._fit elapsed time: 0.0026731491088867188 seconds
# INFO:sklearn_instrumentation.instruments.logging:BaseForest.fit starting.
# INFO:sklearn_instrumentation.instruments.logging:BaseForest.fit elapsed time: 0.1768970489501953 seconds
# INFO:sklearn_instrumentation.instruments.logging:Pipeline.fit elapsed time: 0.17983102798461914 seconds
# Observe logging
classification_model.predict(X)
# INFO:sklearn_instrumentation.instruments.logging:Pipeline.predict starting.
# INFO:sklearn_instrumentation.instruments.logging:FeatureUnion.transform starting.
# INFO:sklearn_instrumentation.instruments.logging:StandardScaler.transform starting.
# INFO:sklearn_instrumentation.instruments.logging:StandardScaler.transform elapsed time: 0.00024509429931640625 seconds
# INFO:sklearn_instrumentation.instruments.logging:_BasePCA.transform starting.
# INFO:sklearn_instrumentation.instruments.logging:_BasePCA.transform elapsed time: 0.0002181529998779297 seconds
# INFO:sklearn_instrumentation.instruments.logging:FeatureUnion.transform elapsed time: 0.0012080669403076172 seconds
# INFO:sklearn_instrumentation.instruments.logging:ForestClassifier.predict starting.
# INFO:sklearn_instrumentation.instruments.logging:ForestClassifier.predict_proba starting.
# INFO:sklearn_instrumentation.instruments.logging:ForestClassifier.predict_proba elapsed time: 0.013531208038330078 seconds
# INFO:sklearn_instrumentation.instruments.logging:ForestClassifier.predict elapsed time: 0.013692140579223633 seconds
# INFO:sklearn_instrumentation.instruments.logging:Pipeline.predict elapsed time: 0.015219926834106445 seconds
# Remove instrumentation
instrumentor.uninstrument_packages(["sklearn"])
# Observe no logging
classification_model.predict(X)Instrument any sklearn compatible trained estimator or metaestimator.
from sklearn_instrumentation import SklearnInstrumentor
instrumentor = SklearnInstrumentor(instrument=my_instrument)
instrumentor.instrument_instance(estimator=my_ml_pipeline)Example:
import logging
from sklearn.datasets import load_iris
from sklearn_instrumentation import SklearnInstrumentor
from sklearn_instrumentation.instruments.logging import TimeElapsedLogger
from sklearn.ensemble import RandomForestClassifier
logging.basicConfig(level=logging.INFO)
# Train a classifier
X, y = load_iris(return_X_y=True)
rf = RandomForestClassifier()
rf.fit(X, y)
# Create an instrumentor which decorates BaseEstimator methods with
# logging output when entering and exiting methods, with time elapsed logged
# on exit.
instrumentor = SklearnInstrumentor(instrument=TimeElapsedLogger())
# Apply the decorator to all BaseEstimators in each of these libraries
instrumentor.instrument_instance(rf)
# Observe the logging output
rf.predict(X)
# INFO:sklearn_instrumentation.instruments.logging:ForestClassifier.predict starting.
# INFO:sklearn_instrumentation.instruments.logging:ForestClassifier.predict_proba starting.
# INFO:sklearn_instrumentation.instruments.logging:ForestClassifier.predict_proba elapsed time: 0.014165163040161133 seconds
# INFO:sklearn_instrumentation.instruments.logging:ForestClassifier.predict elapsed time: 0.014327764511108398 seconds
# Remove the decorator from all BaseEstimators in each of these libraries
instrumentor.uninstrument_instance(rf)
# No more logging
rf.predict(X)During fitting, some metaestimators will copy estimator instances using scikit-learn's clone function. This results in cloned fitted estimators not having instrumentation. To get around this we can instrument the classes rather than the instances.
from sklearn.datasets import load_iris
from sklearn.decomposition import PCA
from sklearn.ensemble import RandomForestClassifier
from sklearn.pipeline import FeatureUnion
from sklearn.pipeline import Pipeline
from sklearn.preprocessing import StandardScaler
from sklearn_instrumentation import SklearnInstrumentor
from sklearn_instrumentation.instruments.logging import TimeElapsedLogger
logging.basicConfig(level=logging.INFO)
ss = StandardScaler()
pca = PCA(n_components=3)
rf = RandomForestClassifier()
classification_model = Pipeline(
steps=[
(
"fu",
FeatureUnion(
transformer_list=[
("ss", ss),
("pca", pca),
]
),
),
("rf", rf),
]
)
X, y = load_iris(return_X_y=True)
instrumentor = SklearnInstrumentor(instrument=TimeElapsedLogger())
instrumentor.instrument_instance_classes(classification_model)
classification_model.fit(X, y)
# INFO:sklearn_instrumentation.instruments.logging:Pipeline.fit starting.
# INFO:sklearn_instrumentation.instruments.logging:Pipeline.fit starting.
# INFO:sklearn_instrumentation.instruments.logging:Pipeline._fit starting.
# INFO:sklearn_instrumentation.instruments.logging:Pipeline._fit starting.
# INFO:sklearn_instrumentation.instruments.logging:StandardScaler.fit starting.
# INFO:sklearn_instrumentation.instruments.logging:StandardScaler.fit starting.
# INFO:sklearn_instrumentation.instruments.logging:StandardScaler.fit elapsed time: 0.0006749629974365234 seconds
# INFO:sklearn_instrumentation.instruments.logging:StandardScaler.fit elapsed time: 0.0007731914520263672 seconds
# INFO:sklearn_instrumentation.instruments.logging:StandardScaler.transform starting.
# INFO:sklearn_instrumentation.instruments.logging:StandardScaler.transform starting.
# INFO:sklearn_instrumentation.instruments.logging:StandardScaler.transform elapsed time: 0.00016427040100097656 seconds
# INFO:sklearn_instrumentation.instruments.logging:StandardScaler.transform elapsed time: 0.0002810955047607422 seconds
# INFO:sklearn_instrumentation.instruments.logging:PCA._fit starting.
# INFO:sklearn_instrumentation.instruments.logging:PCA._fit starting.
# INFO:sklearn_instrumentation.instruments.logging:PCA._fit elapsed time: 0.0004239082336425781 seconds
# INFO:sklearn_instrumentation.instruments.logging:PCA._fit elapsed time: 0.0005612373352050781 seconds
# INFO:sklearn_instrumentation.instruments.logging:Pipeline._fit elapsed time: 0.002705097198486328 seconds
# INFO:sklearn_instrumentation.instruments.logging:Pipeline._fit elapsed time: 0.002802133560180664 seconds
# INFO:sklearn_instrumentation.instruments.logging:BaseForest.fit starting.
# INFO:sklearn_instrumentation.instruments.logging:BaseForest.fit starting.
# INFO:sklearn_instrumentation.instruments.logging:BaseForest.fit elapsed time: 0.16085195541381836 seconds
# INFO:sklearn_instrumentation.instruments.logging:BaseForest.fit elapsed time: 0.16097569465637207 seconds
# INFO:sklearn_instrumentation.instruments.logging:Pipeline.fit elapsed time: 0.1639721393585205 seconds
# INFO:sklearn_instrumentation.instruments.logging:Pipeline.fit elapsed time: 0.16404390335083008 seconds
classification_model.predict(X)
# INFO:sklearn_instrumentation.instruments.logging:Pipeline.predict starting.
# INFO:sklearn_instrumentation.instruments.logging:Pipeline.predict starting.
# INFO:sklearn_instrumentation.instruments.logging:FeatureUnion.transform starting.
# INFO:sklearn_instrumentation.instruments.logging:FeatureUnion.transform starting.
# INFO:sklearn_instrumentation.instruments.logging:StandardScaler.transform starting.
# INFO:sklearn_instrumentation.instruments.logging:StandardScaler.transform starting.
# INFO:sklearn_instrumentation.instruments.logging:StandardScaler.transform elapsed time: 0.0001049041748046875 seconds
# INFO:sklearn_instrumentation.instruments.logging:StandardScaler.transform elapsed time: 0.00017309188842773438 seconds
# INFO:sklearn_instrumentation.instruments.logging:_BasePCA.transform starting.
# INFO:sklearn_instrumentation.instruments.logging:_BasePCA.transform starting.
# INFO:sklearn_instrumentation.instruments.logging:_BasePCA.transform elapsed time: 0.0001690387725830078 seconds
# INFO:sklearn_instrumentation.instruments.logging:_BasePCA.transform elapsed time: 0.00023698806762695312 seconds
# INFO:sklearn_instrumentation.instruments.logging:FeatureUnion.transform elapsed time: 0.0008630752563476562 seconds
# INFO:sklearn_instrumentation.instruments.logging:FeatureUnion.transform elapsed time: 0.0009222030639648438 seconds
# INFO:sklearn_instrumentation.instruments.logging:ForestClassifier.predict starting.
# INFO:sklearn_instrumentation.instruments.logging:ForestClassifier.predict starting.
# INFO:sklearn_instrumentation.instruments.logging:ForestClassifier.predict_proba starting.
# INFO:sklearn_instrumentation.instruments.logging:ForestClassifier.predict_proba starting.
# INFO:sklearn_instrumentation.instruments.logging:ForestClassifier.predict_proba elapsed time: 0.01138925552368164 seconds
# INFO:sklearn_instrumentation.instruments.logging:ForestClassifier.predict_proba elapsed time: 0.011497974395751953 seconds
# INFO:sklearn_instrumentation.instruments.logging:ForestClassifier.predict elapsed time: 0.011577844619750977 seconds
# INFO:sklearn_instrumentation.instruments.logging:ForestClassifier.predict elapsed time: 0.011635780334472656 seconds
# INFO:sklearn_instrumentation.instruments.logging:Pipeline.predict elapsed time: 0.012682199478149414 seconds
# INFO:sklearn_instrumentation.instruments.logging:Pipeline.predict elapsed time: 0.012733936309814453 seconds
instrumentor.uninstrument_instance_classes(classification_model)
classification_model.predict(X)The package comes with a handful of instruments which log information about X or timing of execution. You can create your own instrument just by creating a decorator, following this pattern
from functools import wraps
def my_instrumentation(estimator, func, **dkwargs):
"""Wrap an estimator method with instrumentation.
:param obj: The class or instance on which to apply instrumentation
:param func: The method to be instrumented.
:param dkwargs: Decorator kwargs, which can be passed to the
decorator at decoration time. For estimator instrumentation
this allows different parametrizations for each ml model.
"""
@wraps(func)
def wrapper(*args, **kwargs):
"""Wrapping function.
:param args: The args passed to methods, typically
just ``X`` and/or ``y``
:param kwargs: The kwargs passed to methods, usually
weights or other params
"""
# Code goes here before execution of the estimator method
retval = func(*args, **kwargs)
# Code goes here after execution of the estimator method
return retval
return wrapperTo create a stateful instrument, use a class with the __call__ method for implementing the decorator:
from functools import wraps
from sklearn_instrumentation.instruments.base import BaseInstrument
class MyInstrument(BaseInstrument)
def __init__(self, *args, **kwargs):
# handle any statefulness here
pass
def __call__(self, estimator, func, **dkwargs):
"""Wrap an estimator method with instrumentation.
:param obj: The class or instance on which to apply instrumentation
:param func: The method to be instrumented.
:param dkwargs: Decorator kwargs, which can be passed to the
decorator at decoration time. For estimator instrumentation
this allows different parametrizations for each ml model.
"""
@wraps(func)
def wrapper(*args, **kwargs):
"""Wrapping function.
:param args: The args passed to methods, typically
just ``X`` and/or ``y``
:param kwargs: The kwargs passed to methods, usually
weights or other params
"""
# Code goes here before execution of the estimator method
retval = func(*args, **kwargs)
# Code goes here after execution of the estimator method
return retval
return wrapperTo pass kwargs for different ml models:
instrumentor = SklearnInstrumentor(instrument=my_instrument)
instrumentor.instrument_instance(estimator=ml_model_1, instrument_kwargs={"name": "awesome_model"})
instrumentor.instrument_instance(estimator=ml_model_2, instrument_kwargs={"name": "better_model"})