Class: MultiOutputClassifier
Multi target classification.
This strategy consists of fitting one classifier per target. This is a simple strategy for extending classifiers that do not natively support multi-target classification.
Constructors
new MultiOutputClassifier()
new MultiOutputClassifier(
opts?):MultiOutputClassifier
Parameters
| Parameter | Type | Description |
|---|---|---|
opts? | object | - |
opts.estimator? | any | An estimator object implementing fit and predict. A predict_proba method will be exposed only if estimator implements it. |
opts.n_jobs? | number | The number of jobs to run in parallel. fit, predict and partial_fit (if supported by the passed estimator) will be parallelized for each target. When individual estimators are fast to train or predict, using n_jobs > 1 can result in slower performance due to the parallelism overhead. undefined means 1 unless in a joblib.parallel_backend context. \-1 means using all available processes / threads. See Glossary for more details. |
Returns MultiOutputClassifier
Defined in generated/multioutput/MultiOutputClassifier.ts:23
Properties
| Property | Type | Default value | Defined in |
|---|---|---|---|
_isDisposed | boolean | false | generated/multioutput/MultiOutputClassifier.ts:21 |
_isInitialized | boolean | false | generated/multioutput/MultiOutputClassifier.ts:20 |
_py | PythonBridge | undefined | generated/multioutput/MultiOutputClassifier.ts:19 |
id | string | undefined | generated/multioutput/MultiOutputClassifier.ts:16 |
opts | any | undefined | generated/multioutput/MultiOutputClassifier.ts:17 |
Accessors
classes_
Get Signature
get classes_():
Promise<ArrayLike>
Class labels.
Returns Promise<ArrayLike>
Defined in generated/multioutput/MultiOutputClassifier.ts:456
estimators_
Get Signature
get estimators_():
Promise<any>
Estimators used for predictions.
Returns Promise<any>
Defined in generated/multioutput/MultiOutputClassifier.ts:483
feature_names_in_
Get Signature
get feature_names_in_():
Promise<ArrayLike>
Names of features seen during fit. Only defined if the underlying estimators expose such an attribute when fit.
Returns Promise<ArrayLike>
Defined in generated/multioutput/MultiOutputClassifier.ts:537
n_features_in_
Get Signature
get n_features_in_():
Promise<number>
Number of features seen during fit. Only defined if the underlying estimator exposes such an attribute when fit.
Returns Promise<number>
Defined in generated/multioutput/MultiOutputClassifier.ts:510
py
Get Signature
get py():
PythonBridge
Returns PythonBridge
Set Signature
set py(
pythonBridge):void
Parameters
| Parameter | Type |
|---|---|
pythonBridge | PythonBridge |
Returns void
Defined in generated/multioutput/MultiOutputClassifier.ts:42
Methods
dispose()
dispose():
Promise<void>
Disposes of the underlying Python resources.
Once dispose() is called, the instance is no longer usable.
Returns Promise<void>
Defined in generated/multioutput/MultiOutputClassifier.ts:98
fit()
fit(
opts):Promise<any>
Fit the model to data matrix X and targets Y.
Parameters
| Parameter | Type | Description |
|---|---|---|
opts | object | - |
opts.fit_params? | any | Parameters passed to the estimator.fit method of each step. |
opts.sample_weight? | ArrayLike | Sample weights. If undefined, then samples are equally weighted. Only supported if the underlying classifier supports sample weights. |
opts.X? | ArrayLike | The input data. |
opts.Y? | ArrayLike[] | The target values. |
Returns Promise<any>
Defined in generated/multioutput/MultiOutputClassifier.ts:115
get_metadata_routing()
get_metadata_routing(
opts):Promise<any>
Get metadata routing of this object.
Please check User Guide on how the routing mechanism works.
Parameters
| Parameter | Type | Description |
|---|---|---|
opts | object | - |
opts.routing? | any | A MetadataRouter encapsulating routing information. |
Returns Promise<any>
Defined in generated/multioutput/MultiOutputClassifier.ts:166
init()
init(
py):Promise<void>
Initializes the underlying Python resources.
This instance is not usable until the Promise returned by init() resolves.
Parameters
| Parameter | Type |
|---|---|
py | PythonBridge |
Returns Promise<void>
Defined in generated/multioutput/MultiOutputClassifier.ts:55
partial_fit()
partial_fit(
opts):Promise<any>
Incrementally fit a separate model for each class output.
Parameters
| Parameter | Type | Description |
|---|---|---|
opts | object | - |
opts.classes? | any[] | Each array is unique classes for one output in str/int. Can be obtained via \[np.unique(y\[:, i\]) for i in range(y.shape\[1\])\], where y is the target matrix of the entire dataset. This argument is required for the first call to partial_fit and can be omitted in the subsequent calls. Note that y doesn’t need to contain all labels in classes. |
opts.partial_fit_params? | any | Parameters passed to the estimator.partial_fit method of each sub-estimator. Only available if enable_metadata_routing=True. See the User Guide. |
opts.sample_weight? | ArrayLike | Sample weights. If undefined, then samples are equally weighted. Only supported if the underlying regressor supports sample weights. |
opts.X? | ArrayLike | The input data. |
opts.y? | ArrayLike | Multi-output targets. |
Returns Promise<any>
Defined in generated/multioutput/MultiOutputClassifier.ts:202
predict()
predict(
opts):Promise<ArrayLike>
Predict multi-output variable using model for each target variable.
Parameters
| Parameter | Type | Description |
|---|---|---|
opts | object | - |
opts.X? | ArrayLike | The input data. |
Returns Promise<ArrayLike>
Defined in generated/multioutput/MultiOutputClassifier.ts:260
predict_proba()
predict_proba(
opts):Promise<any>
Return prediction probabilities for each class of each output.
This method will raise a ValueError if any of the estimators do not have predict_proba.
Parameters
| Parameter | Type | Description |
|---|---|---|
opts | object | - |
opts.X? | ArrayLike[] | The input data. |
Returns Promise<any>
Defined in generated/multioutput/MultiOutputClassifier.ts:296
score()
score(
opts):Promise<number>
Return the mean accuracy on the given test data and labels.
Parameters
| Parameter | Type | Description |
|---|---|---|
opts | object | - |
opts.X? | ArrayLike[] | Test samples. |
opts.y? | ArrayLike[] | True values for X. |
Returns Promise<number>
Defined in generated/multioutput/MultiOutputClassifier.ts:332
set_fit_request()
set_fit_request(
opts):Promise<any>
Request metadata passed to the fit method.
Note that this method is only relevant if enable_metadata_routing=True (see sklearn.set_config). Please see User Guide on how the routing mechanism works.
The options for each parameter are:
Parameters
| Parameter | Type | Description |
|---|---|---|
opts | object | - |
opts.sample_weight? | string | boolean | Metadata routing for sample_weight parameter in fit. |
Returns Promise<any>
Defined in generated/multioutput/MultiOutputClassifier.ts:375
set_partial_fit_request()
set_partial_fit_request(
opts):Promise<any>
Request metadata passed to the partial_fit method.
Note that this method is only relevant if enable_metadata_routing=True (see sklearn.set_config). Please see User Guide on how the routing mechanism works.
The options for each parameter are:
Parameters
| Parameter | Type | Description |
|---|---|---|
opts | object | - |
opts.classes? | string | boolean | Metadata routing for classes parameter in partial_fit. |
opts.sample_weight? | string | boolean | Metadata routing for sample_weight parameter in partial_fit. |
Returns Promise<any>
Defined in generated/multioutput/MultiOutputClassifier.ts:415