FeatureType¶

class database.models.FeatureType(*args, **kwargs)¶

A category of Feature of which ExtractedFeatures are instances.

is_sequential¶: models.NullBooleanField – Whether a feature can be extracted from sequential windows of a data instance (e.g. individual measures, sections, etc); a value of true means that it can, a value of false means that only one feature value may be extracted per instance (i.e. per symbolic feature file)

dimensions¶: models.PositiveIntegerField – The number of dimensions of the FeatureType

min_val¶: models.FloatField – The minimum value of this FeatureType across all files that have this feature

max_val¶: models.FloatField – The maximum value of this FeatureType across all files that have this feature

instances¶: models.ManyToOneRel – The ExtractedFeature objects that are instances of this FeatureType

Attributes Summary

`code`	A wrapper for a deferred-loading field.
`description`	A wrapper for a deferred-loading field.
`dimensions`	A wrapper for a deferred-loading field.
`group`	Get the human readable group from the code of this FeatureType
`id`	A wrapper for a deferred-loading field.
`instances`	Accessor to the related objects manager on the reverse side of a many-to-one relation.
`is_sequential`	A wrapper for a deferred-loading field.
`max_val`	A wrapper for a deferred-loading field.
`min_val`	A wrapper for a deferred-loading field.
`name`	A wrapper for a deferred-loading field.
`objects`

Methods Summary

`get_next_by_date_created`(*[, field, is_next])
`get_next_by_date_updated`(*[, field, is_next])
`get_previous_by_date_created`(*[, field, is_next])
`get_previous_by_date_updated`(*[, field, is_next])
`max_and_min`()	Update the max and min values of this FeatureType

Attributes Documentation

code: A wrapper for a deferred-loading field. When the value is read from this object the first time, the query is executed.

description: A wrapper for a deferred-loading field. When the value is read from this object the first time, the query is executed.

dimensions: A wrapper for a deferred-loading field. When the value is read from this object the first time, the query is executed.

id¶: A wrapper for a deferred-loading field. When the value is read from this object the first time, the query is executed.

instances

Accessor to the related objects manager on the reverse side of a many-to-one relation.

In the example:

class Child(Model):
    parent = ForeignKey(Parent, related_name='children')

Parent.children is a ReverseManyToOneDescriptor instance.

Most of the implementation is delegated to a dynamically defined manager class built by create_forward_many_to_many_manager() defined below.

is_sequential: A wrapper for a deferred-loading field. When the value is read from this object the first time, the query is executed.

max_val: A wrapper for a deferred-loading field. When the value is read from this object the first time, the query is executed.

min_val: A wrapper for a deferred-loading field. When the value is read from this object the first time, the query is executed.

name: A wrapper for a deferred-loading field. When the value is read from this object the first time, the query is executed.

Methods Documentation

get_next_by_date_created(*, field=<django.db.models.fields.DateTimeField: date_created>, is_next=True, **kwargs)¶

get_next_by_date_updated(*, field=<django.db.models.fields.DateTimeField: date_updated>, is_next=True, **kwargs)¶

get_previous_by_date_created(*, field=<django.db.models.fields.DateTimeField: date_created>, is_next=False, **kwargs)¶

get_previous_by_date_updated(*, field=<django.db.models.fields.DateTimeField: date_updated>, is_next=False, **kwargs)¶