object NeuralNet_XL extends ModelFactory
The NeuralNet_XL companion object provides factory functions for buidling multi-layer
neural nets (defaults to two hidden layers).
Note, 'rescale' is defined in ModelFactory in Model.scala.
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def
allForms(x: MatriD): MatriD
Create all forms/terms for each row/point placing them in a new matrix.
Create all forms/terms for each row/point placing them in a new matrix.
- x
the original un-expanded input/data matrix
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def
apply(x: MatriD, y: VectoD, nz: Array[Int], fname: Strings, hparam: HyperParameter, af: Array[AFF]): NeuralNet_XL
Create a
NeuralNet_XLfor a data matrix and response vector.Create a
NeuralNet_XLfor a data matrix and response vector.- x
the input/data matrix
- y
the output/response vector
- nz
the number of nodes in each hidden layer, e.g., Array (5, 10) means 2 hidden with sizes 5 and 10
- fname
the feature/variable names
- hparam
the hyper-parameters
- af
the array of activation function families over all layers
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def
apply(xy: MatriD, nz: Array[Int] = null, fname: Strings = null, hparam: HyperParameter = Optimizer.hp, af: Array[AFF] = Array (f_tanh, f_tanh, f_id)): NeuralNet_XL
Create a
NeuralNet_XLfor a combined data matrix.Create a
NeuralNet_XLfor a combined data matrix.- xy
the combined input and output matrix
- nz
the number of nodes in each hidden layer, e.g., Array (5, 10) means 2 hidden with sizes 5 and 10
- fname
the feature/variable names
- hparam
the hyper-parameters
- af
the array of activation function families over all layers
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def
forms(xi: VectoD, k: Int, nt: Int): VectoD
Given a vector/point 'v', compute the values for all of its forms/terms, returning them as a vector (assumes
Regressionwith intercept).Given a vector/point 'v', compute the values for all of its forms/terms, returning them as a vector (assumes
Regressionwith intercept). Override for expanded columns, e.g.,QuadRegression.- xi
the vector/point (i-th row of x) for creating forms/terms
- k
the number of features/predictor variables (not counting intercept)
- nt
the number of terms
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def
numTerms(k: Int): Int
The number of terms/parameters in the model (assumes
Regressionwith intercept.The number of terms/parameters in the model (assumes
Regressionwith intercept. Override for expanded columns, e.g.,QuadRegression.- k
the number of features/predictor variables (not counting intercept)
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val
rescale: Boolean
The 'rescale' flag indicated whether the data is to be rescaled/normalized
The 'rescale' flag indicated whether the data is to be rescaled/normalized
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def
rescaleOff(): Unit
Turn rescaling off.
Turn rescaling off.
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def
rescaleOn(): Unit
Turn rescaling on.
Turn rescaling on.
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