module mlmodel.ml_featurizer¶
Classes¶
class |
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Unable to process a type. |
Functions¶
function |
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Tells if X is a vector. |
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Converts a machine learned model into a function which converts a vector into features produced by the model. It … |
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Builds a featurizer from a keras model It returns a function which returns the output of one particular … |
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Builds a featurizer from a :epkg:`scikit-learn:linear_model:LogisticRegression`. It returns a function which returns … |
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Builds a featurizer from a :epkg:`scikit-learn:ensemble:RandomForestClassifier`. It returns a function which returns … |
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Builds a featurizer from a torch model It returns a function which returns the output of one particular … |
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Checks types and dimension. Calls fct and returns the approriate type. A vector if X is a vector, the raw output … |
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Checks types and dimension. Calls fct and returns the approriate type. A vector if X is a vector, the raw output … |
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Checks types and dimension. Calls fct and returns the approriate type. A vector if X is a vector, the raw output … |
Documentation¶
Featurizers for machine learned models.
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exception
mlinsights.mlmodel.ml_featurizer.FeaturizerTypeError[source]¶ Bases:
TypeErrorUnable to process a type.
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mlinsights.mlmodel.ml_featurizer.is_vector(X)[source]¶ Tells if X is a vector.
- Parameters
X – vector
- Returns
boolean
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mlinsights.mlmodel.ml_featurizer.model_featurizer(model, **params)[source]¶ Converts a machine learned model into a function which converts a vector into features produced by the model. It can be the output itself or intermediate results. The model can come from scikit-learn, keras or torch.
- Parameters
model – model
params – additional parameters
- Returns
function
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mlinsights.mlmodel.ml_featurizer.model_featurizer_keras(model, layer=None)[source]¶ Builds a featurizer from a keras model It returns a function which returns the output of one particular layer.
- Parameters
model – model to use to featurize a vector
layer – number of layers to keep
- Returns
function
See About Keras models.
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mlinsights.mlmodel.ml_featurizer.model_featurizer_lr(model)[source]¶ Builds a featurizer from a :epkg:`scikit-learn:linear_model:LogisticRegression`. It returns a function which returns
model.decision_function(X).- Parameters
model – model to use to featurize a vector
- Returns
function
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mlinsights.mlmodel.ml_featurizer.model_featurizer_rfc(model, output=True)[source]¶ Builds a featurizer from a :epkg:`scikit-learn:ensemble:RandomForestClassifier`. It returns a function which returns the output of every tree (method apply).
- Parameters
model – model to use to featurize a vector
output – use output (
model.predict_proba(X)) or trees output (model.apply(X))
- Returns
function
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mlinsights.mlmodel.ml_featurizer.model_featurizer_torch(model, layer=None)[source]¶ Builds a featurizer from a torch model It returns a function which returns the output of one particular layer.
- Parameters
model – model to use to featurize a vector
layer – number of layers to keep
- Returns
function
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mlinsights.mlmodel.ml_featurizer.wrap_predict_keras(X, fct, many, shapes)[source]¶ Checks types and dimension. Calls fct and returns the approriate type. A vector if X is a vector, the raw output otherwise.
- Parameters
X – vector or list
fct – function
many – many observations or just one
shapes – expected input shapes for the neural network
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mlinsights.mlmodel.ml_featurizer.wrap_predict_sklearn(X, fct, many)[source]¶ Checks types and dimension. Calls fct and returns the approriate type. A vector if X is a vector, the raw output otherwise.
- Parameters
X – vector or list
fct – function
many – many observations or just one
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mlinsights.mlmodel.ml_featurizer.wrap_predict_torch(X, fct, many, shapes)[source]¶ Checks types and dimension. Calls fct and returns the approriate type. A vector if X is a vector, the raw output otherwise.
- Parameters
X – vector or list
fct – function
many – many observations or just one
shapes – expected input shapes for the neural network
