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Drop out course target.

Copyright: 2016 David Monllao {@link http://www.davidmonllao.com}
License: http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
File Size: 154 lines (6 kb)
Included or required:0 times
Referenced: 0 times
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Defines 1 class

course_dropout:: (4 methods):
  get_name()
  classes_description()
  is_valid_analysable()
  calculate_sample()


Class: course_dropout  - X-Ref

Drop out course target.

get_name()   X-Ref
Returns the name.

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

return: \lang_string

classes_description()   X-Ref
classes_description

return: string[]

is_valid_analysable(\core_analytics\analysable $course, $fortraining = true)   X-Ref
Discards courses that are not yet ready to be used for training or prediction.

param: \core_analytics\analysable $course
param: bool $fortraining
return: true|string

calculate_sample($sampleid, \core_analytics\analysable $course, $starttime = false, $endtime = false)   X-Ref
calculate_sample

The meaning of a drop out changes depending on the settings enabled in the course. Following these priorities order:
1.- Course completion
2.- No logs during the last quarter of the course

param: int $sampleid
param: \core_analytics\analysable $course
param: int $starttime
param: int $endtime
return: float|null 0 -> not at risk, 1 -> at risk