class NllCriterion

This criterion can be used to train Distribution object using the GMTrainer trainer.

Inheritance:


Public Methods

[more] NllCriterion()


Inherited from Criterion:

Public Fields

oDataSet* data

Public Methods

ovirtual void setDataSet(DataSet* data_)


Inherited from GradientMachine:

Public Fields

obool is_free
oList* params
oList* der_params
oint n_params
oreal* beta

Public Methods

ovirtual void init()
ovirtual int numberOfParams()
ovirtual void iterInitialize()
ovirtual void backward(List* inputs, real* alpha)
ovirtual void allocateMemory()
ovirtual void freeMemory()
ovirtual void loadFILE(FILE* file)
ovirtual void saveFILE(FILE* file)


Inherited from Machine:

Public Fields

oint n_inputs
oint n_outputs
oList* outputs

Public Methods

ovirtual void forward(List* inputs)
ovirtual void reset()


Inherited from Object:

Public Methods

ovoid addOption(const char* name, int size, void* ptr, const char* help="", bool is_allowed_after_init=false)
ovoid addIOption(const char* name, int* ptr, int init_value, const char* help="", bool is_allowed_after_init=false)
ovoid addROption(const char* name, real* ptr, real init_value, const char* help="", bool is_allowed_after_init=false)
ovoid addBOption(const char* name, bool* ptr, bool init_value, const char* help="", bool is_allowed_after_init=false)
ovoid setOption(const char* name, void* ptr)
ovoid setIOption(const char* name, int option)
ovoid setROption(const char* name, real option)
ovoid setBOption(const char* name, bool option)
ovoid load(const char* filename)
ovoid save(const char* filename)


Documentation

This criterion can be used to train Distribution object using the GMTrainer trainer. It then maximizes the log likelihood of the data.

The forward method always return its input, which is the negative log likelihood, while the backward method sets the gradient to -1.

o NllCriterion()


This class has no child classes.
Author:
Samy Bengio (bengio@idiap.ch)

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