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mvpa2.clfs.warehouse.FractionTailSelector

class mvpa2.clfs.warehouse.FractionTailSelector(felements, **kwargs)

Given a sequence, provide Ids for a fraction of elements

Notes

Available conditional attributes:

• ndiscarded+: Store number of discarded elements.

(Conditional attributes enabled by default suffixed with +)

Parameters :

felements : float (0,1.0]

Fraction of elements to select/discard. Note: Even when 0.0 is specified at least one element will be selected.

enable_ca : None or list of str

Names of the conditional attributes which should be enabled in addition to the default ones

disable_ca : None or list of str

Names of the conditional attributes which should be disabled

tail : [‘lower’, ‘upper’]

Choose the tail to be processed.

sort : bool

Flag whether selected IDs will be sorted. Disable if not necessary to save some CPU cycles.

mode : {‘discard’, ‘select’}

Decides whether to select or to discard features.

descr : str

Description of the instance

felements