core_analytics\dataset_manager Class Reference

Datasets manager. More...

Public Member Functions
	__construct ($modelid, $analysableid, $timesplittingid, $filearea, $evaluation=false)
	Constructor method.
	store ($data)
	Store the dataset in the internal file system.

Static Public Member Functions
static	clear_model_files ($modelid)
	Delete all files of a model.
static	delete_previous_evaluation_file ($modelid, $timesplittingid)
	Deletes previous evaluation files of this model.
static	export_training_data ($modelid, $timesplittingid)
	Exports the model training data.
static	get_evaluation_analysable_file ($modelid, $analysableid, $timesplittingid)
	Returns this (model + analysable + time splitting) file.
static	get_pending_files ($modelid, $includetarget, $timesplittingids)
	Gets the list of files that couldn't be previously used for training and prediction.
static	get_previous_evaluation_file ($modelid, $timesplittingid)
	Returns the previous evaluation file.
static	get_structured_data (\stored_file $dataset)
	Returns the dataset file data structured by sampleids using the indicators and target column names.
static	merge_datasets (array $files, $modelid, $timesplittingid, $filearea, $evaluation=false)
	Merge multiple files into one.

Public Attributes
const	EVALUATION_FILENAME = 'evaluation.csv'
	Evaluation file file name.
const	EXPORT_FILEAREA = 'export'
	File area for exported datasets.
const	LABELLED_FILEAREA = 'labelled'
	File area for labelled datasets.
const	UNLABELLED_FILEAREA = 'unlabelled'
	File area for unlabelled datasets.

Static Protected Member Functions
static	get_filename ($evaluation)
	Returns the file name to be used.

Protected Attributes
int	$analysableid
bool	$evaluation
	Whether this is a dataset for evaluation or not.
string	$filearea
	The dataset filearea.
int	$modelid
	The model id.
string	$timesplittingid
	Range processor in use.

Detailed Description

Datasets manager.

Copyright

2016 David Monllao

License

http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

Constructor & Destructor Documentation

__construct()

core_analytics\dataset_manager::__construct	(		$modelid,
			$analysableid,
			$timesplittingid,
			$filearea,
			$evaluation = false )

Constructor method.

Exceptions

coding_exception

Parameters

int	$modelid
int	$analysableid
string	$timesplittingid
string	$filearea
bool	$evaluation

Return values

void

Member Function Documentation

clear_model_files()

static core_analytics\dataset_manager::clear_model_files ( $modelid )

static

Delete all files of a model.

Parameters

int

$modelid

Return values

bool

delete_previous_evaluation_file()

static core_analytics\dataset_manager::delete_previous_evaluation_file ( $modelid, $timesplittingid )

static

Deletes previous evaluation files of this model.

Parameters

int	$modelid
string	$timesplittingid

Return values

bool

export_training_data()

static core_analytics\dataset_manager::export_training_data ( $modelid, $timesplittingid )

static

Exports the model training data.

Parameters

int	$modelid
string	$timesplittingid

Return values

stored_file|false

get_evaluation_analysable_file()

static core_analytics\dataset_manager::get_evaluation_analysable_file ( $modelid, $analysableid, $timesplittingid )

static

Returns this (model + analysable + time splitting) file.

Parameters

int	$modelid
int	$analysableid
string	$timesplittingid

Return values

stored_file

get_filename()

static core_analytics\dataset_manager::get_filename ( $evaluation )

staticprotected

Returns the file name to be used.

Parameters

strinbool

$evaluation

Return values

string

get_pending_files()

static core_analytics\dataset_manager::get_pending_files ( $modelid, $includetarget, $timesplittingids )

static

Gets the list of files that couldn't be previously used for training and prediction.

Parameters

int	$modelid
bool	$includetarget
string[]	$timesplittingids

Return values

null

get_previous_evaluation_file()

static core_analytics\dataset_manager::get_previous_evaluation_file ( $modelid, $timesplittingid )

static

Returns the previous evaluation file.

Important to note that this is per modelid + timesplittingid, when dealing with multiple analysables this is the merged file. Do not confuse with self\get_evaluation_analysable_file

Parameters

int	$modelid
string	$timesplittingid

Return values

stored_file

get_structured_data()

static core_analytics\dataset_manager::get_structured_data ( \stored_file $dataset )

static

Returns the dataset file data structured by sampleids using the indicators and target column names.

Parameters

stored_file

$dataset

Return values

array

merge_datasets()

static core_analytics\dataset_manager::merge_datasets ( array $files, $modelid, $timesplittingid, $filearea, $evaluation = false )

static

Merge multiple files into one.

Important! It is the caller responsability to ensure that the datasets are compatible.

Parameters

array	$files
int	$modelid
string	$timesplittingid
string	$filearea
bool	$evaluation

Return values

stored_file

store()

core_analytics\dataset_manager::store

(

$data

)

Store the dataset in the internal file system.

Parameters

array

$data

Return values

stored_file

Member Data Documentation

$filearea

string core_analytics\dataset_manager::$filearea

protected

The dataset filearea.

Must be one of the self::*_FILEAREA options.

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The documentation for this class was generated from the following file:

• analytics/classes/dataset_manager.php