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/analytics/classes/local/target/ -> discrete.php (source)
Discrete values target.
| Copyright: | 2017 David Monllao {@link http://www.davidmonllao.com} |
| License: | http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later |
| File Size: | 176 lines (6 kb) |
| Included or required: | 0 times |
| Referenced: | 0 times |
| Includes or requires: | 0 files |
Defines 1 class
discrete:: (8 methods):
is_linear()
is_a_class()
get_display_value()
get_calculation_outcome()
get_classes()
classes_description()
ignored_predicted_classes()
triggers_callback()
Discrete values target.
| is_linear() X-Ref |
| Are this target calculations linear values? return: bool |
| is_a_class($class) X-Ref |
| Is the provided class one of this target valid classes? return: bool param: mixed $class |
| get_display_value($value, $ignoredsubtype = false) X-Ref |
| get_display_value return: string param: float $value param: string $ignoredsubtype |
| get_calculation_outcome($value, $ignoredsubtype = false) X-Ref |
| get_calculation_outcome return: int param: float $value param: string $ignoredsubtype |
| get_classes() X-Ref |
| Returns all the possible values the target calculation can return. Only useful for targets using discrete values, must be overwriten if it is the case. return: array |
| classes_description() X-Ref |
| Returns descriptions for each of the values the target calculation can return. The array indexes should match self::get_classes indexes. return: array |
| ignored_predicted_classes() X-Ref |
| Returns the predicted classes that will be ignored. Better be keen to add more than less classes here, the callback is always able to discard some classes. As an example a target with classes 'grade 0-3', 'grade 3-6', 'grade 6-8' and 'grade 8-10' is interested in flagging both 'grade 6-8' and 'grade 8-10' as ignored. On the other hand, a target like dropout risk with classes 'yes', 'no' may just be interested in 'yes'. return: array List of values that will be ignored (array keys are ignored). |
| triggers_callback($predictedvalue, $predictionscore) X-Ref |
| This method determines if a prediction is interesing for the model or not. This method internally calls ignored_predicted_classes to skip classes flagged by the target as not important for users. return: bool param: mixed $predictedvalue param: float $predictionscore |
