Cognitive depth indicator - quiz. More...

Inheritance diagram for mod_quiz\analytics\indicator\cognitive_depth:

Public Member Functions
	add_sample_data ($data)
	add_sample_data More...

	calculate ($sampleids, $samplesorigin, $starttime=false, $endtime=false, $existingcalculations=array())
	Calculates the indicator. More...

	clear_sample_data ()
	clear_sample_data More...

	fill_per_analysable_caches (\core_analytics\analysable $analysable)
	Fetch the course grades of this activity type instances. More...

string	get_activity_type ()
	Returns the activity type. More...

	get_calculation_outcome ($value, $subtype=false)
	get_calculation_outcome More...

	get_cognitive_depth_level (\cm_info $cm)
	Returns the potential level of cognitive depth. More...

	get_display_value ($value, $subtype=false)
	get_display_value More...

	get_id ()
	The class id is the calculable class full qualified class name. More...

	get_indicator_type ()
	Defines indicator type. More...

	get_social_breadth_level (\cm_info $cm)
	Returns the potential level of social breadth. More...

	save_calculation_info (\core_analytics\local\time_splitting\base $timesplitting, int $rangeindex)
	Stores in MUC the previously added data and it associates it to the provided $calculable. More...

	should_be_displayed ($value, $subtype)
	Show only the main feature. More...

Static Public Member Functions
static	get_feature_headers ()
	get_feature_headers More...

static	get_max_value ()
	Returns the maximum value an indicator calculation can return. More...

static	get_min_value ()
	Returns the minimum value an indicator calculation can return. More...

static	get_name ()
	Returns the name. More...

static	instance ()
	Returns an instance of the indicator. More...

static	required_sample_data ()
	required_sample_data More...

Public Attributes
const	COGNITIVE_LEVEL_1 = 1
	Constant for this cognitive level.

const	COGNITIVE_LEVEL_2 = 2
	Constant for this cognitive level.

const	COGNITIVE_LEVEL_3 = 3
	Constant for this cognitive level.

const	COGNITIVE_LEVEL_4 = 4
	Constant for this cognitive level.

const	COGNITIVE_LEVEL_5 = 5
	Constant for this cognitive level.

const	INDICATOR_COGNITIVE = "cognitve"
	Constant cognitive indicator type.

const	INDICATOR_SOCIAL = "social"
	Constant social indicator type.

const	MAX_COGNITIVE_LEVEL = 5
	Max cognitive depth level accepted.

const	MAX_SOCIAL_LEVEL = 5
	Max social breadth level accepted.

const	MAX_VALUE = 1
	Max value an indicator can return.

const	MIN_VALUE = -1
	Min value an indicator can return.

const	OUTCOME_NEGATIVE = 3
	Negative calculation outcome.

const	OUTCOME_NEUTRAL = 0
	Neutral calculation outcome.

const	OUTCOME_OK = 2
	Positive calculation outcome.

const	OUTCOME_VERY_NEGATIVE = 4
	Very negative calculation outcome.

const	OUTCOME_VERY_POSITIVE = 1
	Very positive calculation outcome.

const	SOCIAL_LEVEL_1 = 1
	Constant for this social level.

const	SOCIAL_LEVEL_2 = 2
	Constant for this social level.

const	SOCIAL_LEVEL_3 = 3
	Constant for this social level.

const	SOCIAL_LEVEL_4 = 4
	Constant for this social level.

const	SOCIAL_LEVEL_5 = 5
	Constant for this social level.

Protected Member Functions
	activity_completed_by (\cm_info $activity, $starttime, $endtime, $student=false)
	Was the activity supposed to be completed during the provided time range?. More...

	activity_type_completed_by (\cm_info $activity, $starttime, $endtime, $student=false)
	True if the activity is due or it has been closed during this period, false if during another period, null if no due time. More...

	add_shared_calculation_info (int $sampleid, array $info)
	Adds info related to the current calculation for later use when generating insights. More...

	any_feedback ($action, cm_info $cm, $contextid, $user)
	Is there any feedback activity log for this user in this context? More...

	any_log ($contextid, $user)
	Do activity logs contain any log of user in this context? More...

	any_write_log ($contextid, $user)
	Do activity logs contain any write log of user in this context? More...

	availability_completed_by (\core_availability\info $info, $starttime, $endtime)
	Check if the activity/section should have been completed during the provided period according to its availability rules. More...

	calculate_sample ($sampleid, $tablename, $starttime=false, $endtime=false)
	calculate_sample More...

	classify_value ($value, $ranges)
	Classifies the provided value into the provided range according to the ranges predicates. More...

	cognitive_calculate_sample ($sampleid, $tablename, $starttime=false, $endtime=false)
	Calculates the cognitive depth of a sample. More...

	feedback_check_grades ()
	feedback_check_grades More...

	feedback_post_action (\cm_info $cm, $contextid, $userid, $eventnames, $after=null)
	Whether this user in this context did any of the provided actions (events) More...

	feedback_replied (\cm_info $cm, $contextid, $userid, $after=false)
	feedback_replied More...

	feedback_replied_events ()
	Returns the list of events that involve replying to feedback from other users. More...

	feedback_submitted (\cm_info $cm, $contextid, $userid, $after=null)
	$cm is used for this method overrides. More...

	feedback_submitted_events ()
	feedback_submitted_events More...

	feedback_viewed (\cm_info $cm, $contextid, $userid, $after=null)
	$cm is used for this method overrides. More...

	feedback_viewed_events ()
	feedback_viewed_events More...

	fetch_activity_logs ($activities, $starttime=false, $endtime=false)
	Fetch acitivity logs from database. More...

	fetch_student_grades (\core_analytics\course $course)
	Gets the course student grades. More...

	fill_instance_data (\cm_info $cm)
	Fills in activity instance data. More...

	get_activities ($starttime, $endtime, $student=false)
	Guesses all activities that were available during a period of time. More...

	get_graded_date ($contextid, $userid, $checkfeedback=false)
	Returns the date a user was graded. More...

	get_student_activities ($sampleid, $tablename, $starttime, $endtime)
	Returns the activities the user had access to between a time period. More...

	get_time_range_weeks_number ($starttime, $endtime)
	Returns the number of weeks a time range contains. More...

	get_timeclose_field ()
	Returns the name of the field that controls activity availability. More...

	limit_value ($calculatedvalue)
	Limits the calculated value to the minimum and maximum values. More...

	retrieve ($elementname, $sampleid)
	Retrieve the specified element associated to $sampleid. More...

	social_calculate_sample ($sampleid, $tablename, $starttime=false, $endtime=false)
	Calculates the social breadth of a sample. More...

	to_features ($calculatedvalues)
	Converts the calculated values to a list of features for the dataset. More...

	validate_calculated_value ($calculatedvalue)
	Validates the calculated value. More...

Static Protected Member Functions
static	include_averages ()
	Set to false to avoid context features to be added as dataset features. More...

Protected Attributes
array	$activitylogs = null
	Array of logs by [contextid][userid].

core_analytics calculation_info null	$calculationinfo = null

core_analytics course	$course = null

array	$grades = null
	Array of grades by [contextid][userid].

array	$instancedata = array()
	instancedata

array[]	$sampledata = array()

Detailed Description

Cognitive depth indicator - quiz.

Copyright: 2017 David Monllao http://www.davidmonllao.com

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

Member Function Documentation

◆ activity_completed_by()

core_analytics\local\indicator\community_of_inquiry_activity::activity_completed_by	(	\cm_info	$activity,
			$starttime,
			$endtime,
			$student = `false`
	)

protectedinherited

Was the activity supposed to be completed during the provided time range?.

Parameters

cm_info	$activity
int	$starttime
int	$endtime
stdClass \| false	$student

Return values

bool

◆ activity_type_completed_by()

core_analytics\local\indicator\community_of_inquiry_activity::activity_type_completed_by	(	\cm_info	$activity,
			$starttime,
			$endtime,
			$student = `false`
	)

protectedinherited

True if the activity is due or it has been closed during this period, false if during another period, null if no due time.

It can be overwritten by activities that allow teachers to set a due date or a time close separately from Moodle availability system. Note that in most of the cases overwriting get_timeclose_field should be enough.

Returns true or false if the time close date falls into the provided time range. Null otherwise.

Parameters

cm_info	$activity
int	$starttime
int	$endtime
stdClass \| false	$student

Return values

null

◆ add_sample_data()

core_analytics\calculable::add_sample_data ( $data )

inherited

add_sample_data

Parameters

array $data

Return values

void

◆ add_shared_calculation_info()

core_analytics\calculable::add_shared_calculation_info	(	int	$sampleid,
		array	$info
	)

finalprotectedinherited

Adds info related to the current calculation for later use when generating insights.

Note that the data in $info array is reused across multiple samples, if you want to add data just for this sample you can use the sample id as key.

Please, note that you should be careful with how much data you add here as it can kill the server memory.

Parameters

int	$sampleid	The sample id this data is associated with
array	$info	The data. Indexed by an id unique across the site. E.g. an activity id.

Return values

null

◆ any_feedback()

core_analytics\local\indicator\community_of_inquiry_activity::any_feedback	(		$action,
		cm_info	$cm,
			$contextid,
			$user
	)

protectedinherited

Is there any feedback activity log for this user in this context?

This method returns true if $user is empty and there is any feedback activity logs.

Parameters

string	$action
cm_info	$cm
int	$contextid
stdClass \| false	$user

Return values

bool

◆ any_log()

core_analytics\local\indicator\community_of_inquiry_activity::any_log	(	$contextid,
		$user
	)

finalprotectedinherited

Do activity logs contain any log of user in this context?

If user is empty we look for any log in this context.

Parameters

int	$contextid
stdClass \| false	$user

Return values

bool

◆ any_write_log()

core_analytics\local\indicator\community_of_inquiry_activity::any_write_log	(	$contextid,
		$user
	)

finalprotectedinherited

Do activity logs contain any write log of user in this context?

If user is empty we look for any write log in this context.

Parameters

int	$contextid
stdClass \| false	$user

Return values

bool

◆ availability_completed_by()

core_analytics\local\indicator\community_of_inquiry_activity::availability_completed_by	(	\core_availability\info	$info,
			$starttime,
			$endtime
	)

protectedinherited

Check if the activity/section should have been completed during the provided period according to its availability rules.

Parameters

core_availability\info	$info
int	$starttime
int	$endtime

Return values

bool|null

◆ calculate()

core_analytics\local\indicator\base::calculate	(	$sampleids,
		$samplesorigin,
		$starttime = `false`,
		$endtime = `false`,
		$existingcalculations = `array()`
	)

inherited

Calculates the indicator.

Returns an array of values which size matches $sampleids size.

Parameters

int[]	$sampleids
string	$samplesorigin
integer	$starttime	Limit the calculation to this timestart
integer	$endtime	Limit the calculation to this timeend
array	$existingcalculations	Existing calculations of this indicator, indexed by sampleid.

Return values

array [0] = [$sampleid => int[]|float[]], [1] = [$sampleid => int|float], [2] = [$sampleid => $sampleid]

◆ calculate_sample()

core_analytics\local\indicator\community_of_inquiry_activity::calculate_sample	(	$sampleid,
		$tablename,
		$starttime = `false`,
		$endtime = `false`
	)

protectedinherited

calculate_sample

Exceptions

coding_exception

Parameters

int	$sampleid
string	$tablename
int	$starttime
int	$endtime

Return values

float|int|null

Reimplemented from core_analytics\local\indicator\base.

◆ classify_value()

core_analytics\calculable::classify_value	(	$value,
		$ranges
	)

protectedinherited

Classifies the provided value into the provided range according to the ranges predicates.

Use:

eq as 'equal'
ne as 'not equal'
lt as 'lower than'
le as 'lower or equal than'
gt as 'greater than'
ge as 'greater or equal than'

Exceptions

coding_exception

Parameters

int \| float	$value
array	$ranges	e.g. [ ['lt', 20], ['ge', 20] ]

Return values

float

◆ clear_sample_data()

core_analytics\calculable::clear_sample_data ( )

inherited

clear_sample_data

Return values

void

◆ cognitive_calculate_sample()

core_analytics\local\indicator\community_of_inquiry_activity::cognitive_calculate_sample	(	$sampleid,
		$tablename,
		$starttime = `false`,
		$endtime = `false`
	)

protectedinherited

Calculates the cognitive depth of a sample.

Parameters

int	$sampleid
string	$tablename
int	$starttime
int	$endtime

Return values

float|int|null

Exceptions

coding_exception

◆ feedback_check_grades()

mod_quiz\analytics\indicator\activity_base::feedback_check_grades ( )

protectedinherited

feedback_check_grades

Return values

bool

Reimplemented from core_analytics\local\indicator\community_of_inquiry_activity.

◆ feedback_post_action()

core_analytics\local\indicator\community_of_inquiry_activity::feedback_post_action	(	\cm_info	$cm,
			$contextid,
			$userid,
			$eventnames,
			$after = `null`
	)

protectedinherited

Whether this user in this context did any of the provided actions (events)

Parameters

cm_info	$cm
int	$contextid
int	$userid
string[]	$eventnames
int \| false	$after

Return values

bool

Reimplemented in mod_forum\analytics\indicator\activity_base, and mod_chat\analytics\indicator\activity_base.

◆ feedback_replied()

mod_quiz\analytics\indicator\cognitive_depth::feedback_replied	(	\cm_info	$cm,
			$contextid,
			$userid,
			$after = `false`
	)

protected

feedback_replied

Parameters

cm_info	$cm
int	$contextid
int	$userid
int	$after

Return values

bool

Reimplemented from core_analytics\local\indicator\community_of_inquiry_activity.

◆ feedback_replied_events()

core_analytics\local\indicator\community_of_inquiry_activity::feedback_replied_events ( )

protectedinherited

Returns the list of events that involve replying to feedback from other users.

Return values

string[]

Reimplemented in mod_workshop\analytics\indicator\cognitive_depth, mod_forum\analytics\indicator\cognitive_depth, and mod_chat\analytics\indicator\activity_base.

◆ feedback_submitted()

core_analytics\local\indicator\community_of_inquiry_activity::feedback_submitted	(	\cm_info	$cm,
			$contextid,
			$userid,
			$after = `null`
	)

protectedinherited

$cm is used for this method overrides.

This function must be fast.

Parameters

cm_info	$cm
mixed	$contextid
mixed	$userid
int	$after	Timestamp, defaults to the graded date or false if we don't check the date.

Return values

bool

Reimplemented in mod_lesson\analytics\indicator\cognitive_depth.

◆ feedback_submitted_events()

mod_quiz\analytics\indicator\cognitive_depth::feedback_submitted_events ( )

protected

feedback_submitted_events

Return values

string[]

Reimplemented from core_analytics\local\indicator\community_of_inquiry_activity.

◆ feedback_viewed()

core_analytics\local\indicator\community_of_inquiry_activity::feedback_viewed	(	\cm_info	$cm,
			$contextid,
			$userid,
			$after = `null`
	)

protectedinherited

$cm is used for this method overrides.

This function must be fast.

Parameters

cm_info	$cm
mixed	$contextid
mixed	$userid
int	$after	Timestamp, defaults to the graded date or false if we don't check the date.

Return values

bool

Reimplemented in mod_feedback\analytics\indicator\activity_base, and mod_choice\analytics\indicator\activity_base.

◆ feedback_viewed_events()

mod_quiz\analytics\indicator\activity_base::feedback_viewed_events ( )

protectedinherited

feedback_viewed_events

Return values

string[]

Reimplemented from core_analytics\local\indicator\community_of_inquiry_activity.

◆ fetch_activity_logs()

core_analytics\local\indicator\community_of_inquiry_activity::fetch_activity_logs	(	$activities,
		$starttime = `false`,
		$endtime = `false`
	)

protectedinherited

Fetch acitivity logs from database.

Parameters

array	$activities
int	$starttime
int	$endtime

Return values

array

◆ fetch_student_grades()

core_analytics\local\indicator\community_of_inquiry_activity::fetch_student_grades ( \core_analytics\course $course )

protectedinherited

Gets the course student grades.

Parameters

core_analytics\course $course

Return values

void

◆ fill_instance_data()

core_analytics\local\indicator\community_of_inquiry_activity::fill_instance_data ( \cm_info $cm )

protectedinherited

Fills in activity instance data.

Parameters

cm_info $cm

Return values

void

◆ fill_per_analysable_caches()

core_analytics\local\indicator\community_of_inquiry_activity::fill_per_analysable_caches ( \core_analytics\analysable $analysable )

inherited

Fetch the course grades of this activity type instances.

Parameters

core_analytics\analysable $analysable

Return values

void

Reimplemented from core_analytics\local\indicator\base.

◆ get_activities()

core_analytics\local\indicator\community_of_inquiry_activity::get_activities	(	$starttime,
		$endtime,
		$student = `false`
	)

protectedinherited

Guesses all activities that were available during a period of time.

Parameters

int	$starttime
int	$endtime
stdClass \| false	$student

Return values

array

◆ get_activity_type()

string core_analytics\local\indicator\community_of_inquiry_activity::get_activity_type ( )

finalinherited

Returns the activity type.

No point in changing this class in children classes.

The activity name (e.g. assign or quiz)

◆ get_calculation_outcome()

core_analytics\local\indicator\linear::get_calculation_outcome	(	$value,
		$subtype = `false`
	)

inherited

get_calculation_outcome

Parameters

float	$value
string	$subtype

Return values

int

Reimplemented from core_analytics\calculable.

◆ get_cognitive_depth_level()

mod_quiz\analytics\indicator\cognitive_depth::get_cognitive_depth_level ( \cm_info $cm )

Returns the potential level of cognitive depth.

Parameters

cm_info $cm

Return values

int

Reimplemented from core_analytics\local\indicator\community_of_inquiry_activity.

◆ get_display_value()

core_analytics\local\indicator\linear::get_display_value	(	$value,
		$subtype = `false`
	)

inherited

get_display_value

Parameters

float	$value
string	$subtype

Return values

string

Reimplemented from core_analytics\calculable.

◆ get_feature_headers()

static core_analytics\local\indicator\linear::get_feature_headers ( )

staticinherited

get_feature_headers

Return values

array

◆ get_graded_date()

core_analytics\local\indicator\community_of_inquiry_activity::get_graded_date	(	$contextid,
		$userid,
		$checkfeedback = `false`
	)

protectedinherited

Returns the date a user was graded.

Parameters

int	$contextid
int	$userid
bool	$checkfeedback	Check that the student was graded or check that feedback was given

Return values

int|false

◆ get_id()

core_analytics\calculable::get_id ( )

inherited

The class id is the calculable class full qualified class name.

Return values

string

◆ get_indicator_type()

mod_quiz\analytics\indicator\cognitive_depth::get_indicator_type ( )

Defines indicator type.

Return values

string

Reimplemented from core_analytics\local\indicator\community_of_inquiry_activity.

◆ get_max_value()

static core_analytics\local\indicator\base::get_max_value ( )

staticinherited

Returns the maximum value an indicator calculation can return.

Return values

float

◆ get_min_value()

static core_analytics\local\indicator\base::get_min_value ( )

staticinherited

Returns the minimum value an indicator calculation can return.

Return values

float

◆ get_name()

static mod_quiz\analytics\indicator\cognitive_depth::get_name ( )

static

Returns the name.

If there is a corresponding '_help' string this will be shown as well.

Return values

lang_string

Reimplemented from core_analytics\calculable.

◆ get_social_breadth_level()

core_analytics\local\indicator\community_of_inquiry_activity::get_social_breadth_level ( \cm_info $cm )

inherited

Returns the potential level of social breadth.

Parameters

cm_info $cm

Return values

int

◆ get_student_activities()

core_analytics\local\indicator\community_of_inquiry_activity::get_student_activities	(	$sampleid,
		$tablename,
		$starttime,
		$endtime
	)

protectedinherited

Returns the activities the user had access to between a time period.

Parameters

int	$sampleid
string	$tablename
int	$starttime
int	$endtime

Return values

array

◆ get_time_range_weeks_number()

core_analytics\calculable::get_time_range_weeks_number	(	$starttime,
		$endtime
	)

protectedinherited

Returns the number of weeks a time range contains.

Useful for calculations that depend on the time range duration. Note that it returns a float, rounding the float may lead to inaccurate results.

Parameters

int	$starttime
int	$endtime

Return values

float

◆ get_timeclose_field()

mod_quiz\analytics\indicator\activity_base::get_timeclose_field ( )

protectedinherited

Returns the name of the field that controls activity availability.

Return values

null|string

Reimplemented from core_analytics\local\indicator\community_of_inquiry_activity.

◆ include_averages()

static core_analytics\local\indicator\linear::include_averages ( )

staticprotectedinherited

Set to false to avoid context features to be added as dataset features.

Return values

bool

◆ instance()

static core_analytics\local\indicator\base::instance ( )

staticinherited

Returns an instance of the indicator.

Useful to reset cached data.

Return values

core_analytics

◆ limit_value()

core_analytics\calculable::limit_value ( $calculatedvalue )

protectedinherited

Limits the calculated value to the minimum and maximum values.

Parameters

float $calculatedvalue

Return values

float|null

◆ required_sample_data()

static core_analytics\local\indicator\community_of_inquiry_activity::required_sample_data ( )

staticinherited

required_sample_data

Return values

string[]

Reimplemented from core_analytics\local\indicator\base.

◆ retrieve()

core_analytics\calculable::retrieve	(	$elementname,
		$sampleid
	)

protectedinherited

Retrieve the specified element associated to $sampleid.

Parameters

string	$elementname
int	$sampleid

Return values

stdClass|false An stdClass object or false if it can not be found.

◆ save_calculation_info()

core_analytics\calculable::save_calculation_info	(	\core_analytics\local\time_splitting\base	$timesplitting,
		int	$rangeindex
	)

finalinherited

Stores in MUC the previously added data and it associates it to the provided $calculable.

Flagged as final as we don't want people to extend this, it is likely to be moved to core_analytics\calculable

Parameters

core_analytics\local\time_splitting\base	$timesplitting
int	$rangeindex

Return values

null

◆ should_be_displayed()

core_analytics\local\indicator\linear::should_be_displayed	(	$value,
		$subtype
	)

inherited

Show only the main feature.

Parameters

float	$value
string	$subtype

Return values

bool

Reimplemented from core_analytics\local\indicator\base.

◆ social_calculate_sample()

core_analytics\local\indicator\community_of_inquiry_activity::social_calculate_sample	(	$sampleid,
		$tablename,
		$starttime = `false`,
		$endtime = `false`
	)

protectedinherited

Calculates the social breadth of a sample.

Parameters

int	$sampleid
string	$tablename
int	$starttime
int	$endtime

Return values

float|int|null

◆ to_features()

core_analytics\local\indicator\linear::to_features ( $calculatedvalues )

protectedinherited

Converts the calculated values to a list of features for the dataset.

Parameters

array $calculatedvalues

Return values

array

Reimplemented from core_analytics\local\indicator\base.

◆ validate_calculated_value()

core_analytics\local\indicator\base::validate_calculated_value ( $calculatedvalue )

protectedinherited

Validates the calculated value.

Exceptions

coding_exception

Parameters

float $calculatedvalue

Return values

true

Reimplemented in core_analytics\local\indicator\discrete.

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

mod/quiz/classes/analytics/indicator/cognitive_depth.php

Public Member Functions

Static Public Member Functions

Public Attributes

Protected Member Functions

Static Protected Member Functions

Protected Attributes

Detailed Description

Member Function Documentation

◆ activity_completed_by()

◆ activity_type_completed_by()

◆ add_sample_data()

◆ add_shared_calculation_info()

◆ any_feedback()

◆ any_log()

◆ any_write_log()

◆ availability_completed_by()

◆ calculate()

◆ calculate_sample()

◆ classify_value()

◆ clear_sample_data()

◆ cognitive_calculate_sample()

◆ feedback_check_grades()

◆ feedback_post_action()

◆ feedback_replied()

◆ feedback_replied_events()

◆ feedback_submitted()

◆ feedback_submitted_events()

◆ feedback_viewed()

◆ feedback_viewed_events()

◆ fetch_activity_logs()

◆ fetch_student_grades()

◆ fill_instance_data()

◆ fill_per_analysable_caches()

◆ get_activities()

◆ get_activity_type()

◆ get_calculation_outcome()

◆ get_cognitive_depth_level()

◆ get_display_value()

◆ get_feature_headers()

◆ get_graded_date()

◆ get_id()

◆ get_indicator_type()

◆ get_max_value()

◆ get_min_value()

◆ get_name()

◆ get_social_breadth_level()

◆ get_student_activities()

◆ get_time_range_weeks_number()

◆ get_timeclose_field()

◆ include_averages()

◆ instance()

◆ limit_value()

◆ required_sample_data()

◆ retrieve()

◆ save_calculation_info()

◆ should_be_displayed()

◆ social_calculate_sample()

◆ to_features()

◆ validate_calculated_value()