class DiskMatDataSet

Matrix DataSet On Disk.

Inheritance:

Public Methods

DiskMatDataSet(const char* filename, int n_inputs_, int n_targets_, bool one_file_is_one_sequence=false, int max_load=-1, bool binary_mode=false)

Create a new dataset from the file filename.

DiskMatDataSet(char** filenames, int n_files_, int n_inputs_, int n_targets_, bool one_file_is_one_sequence=false, int max_load=-1, bool binary_mode=false)

Same as the previous constructor, but for several files.

DiskMatDataSet(char** input_filenames, char** target_filenames, int n_files_, int max_load=-1, bool binary_mode=false)

Here the inputs and the targets are in separated files.

Inherited from DiskDataSet:

Public Fields

PreProcessingList* pre_processes

IOSequence* io_inputs

IOSequence* io_targets

Public Methods

void init(IOSequence* io_inputs_, IOSequence* io_targets_)

Inherited from DataSet:

Public Fields

int* selected_examples

int n_inputs

int n_targets

int real_current_example_index

Sequence* inputs

Sequence* targets

int n_examples

int n_real_examples

Public Methods

void setExample(int t, bool set_inputs=true, bool set_targets=true)

virtual void setRealExample(int t, bool set_inputs=true, bool set_targets=true)

virtual void pushSubset(int* subset_, int n_examples_)

virtual void popSubset()

virtual void pushExample()

virtual void popExample()

virtual void getNumberOfFrames(int t, int* n_input_frames, int* n_target_frames)

virtual void preProcess(PreProcessing* pre_processing)

Inherited from Object:

Public Fields

Allocator* allocator

Public Methods

void addOption(const char* name, int size, void* ptr, const char* help="")

void addIOption(const char* name, int* ptr, int init_value, const char* help="")

void addROption(const char* name, real* ptr, real init_value, const char* help="")

void addBOption(const char* name, bool* ptr, bool init_value, const char* help="")

void addOOption(const char* name, Object** ptr, Object* init_value, const char* help="")

void setOption(const char* name, void* ptr)

void setIOption(const char* name, int option)

void setROption(const char* name, real option)

void setBOption(const char* name, bool option)

void setOOption(const char* name, Object* option)

virtual void loadXFile(XFile* file)

virtual void saveXFile(XFile* file)

void load(const char* filename)

void save(const char* filename)

void* operator new(size_t size, Allocator* allocator_=NULL)

void* operator new(size_t size, Allocator* allocator_, void* ptr_)

void operator delete(void* ptr)

Documentation

Matrix DataSet On Disk. The standard dataset, with data not fully loaded in memory. Usefull for large databases.

DiskMatDataSet(const char* filename, int n_inputs_, int n_targets_, bool one_file_is_one_sequence=false, int max_load=-1, bool binary_mode=false)

Create a new dataset from the file filename. If the file contains only one sequence, set one_file_is_one_sequence to true. If there is several sequences, and you want only to load the first n ones, set max_load to n (else max_load should be a negative number). If binary_mode is true, the IOBin format will be used, else it will be the IOAscii format.

Input and target sequence will have the same number of frames. For each frame given by the dataset, the first n_inputs_ real are for the inputs and then the next n_targets_ real are for the targets. (n_inputs_ is the input frame size and n_targets_ is the target frame size).

DiskMatDataSet(char** filenames, int n_files_, int n_inputs_, int n_targets_, bool one_file_is_one_sequence=false, int max_load=-1, bool binary_mode=false)

Same as the previous constructor, but for several files. If one_file_is_one_sequence is true, each files will be considered as they had only one sequence.

DiskMatDataSet(char** input_filenames, char** target_filenames, int n_files_, int max_load=-1, bool binary_mode=false)

Here the inputs and the targets are in separated files. Input and target frame sizes are therefore auto-detected. One file must correspond to one sequence.

This class has no child classes.

Author:

Ronan Collobert (collober@idiap.ch)

See Also:

IOAscii
IOBin

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