# models.subsystem¶

Subsystem-level objects.

class pyphi.models.subsystem.CauseEffectStructure(concepts=(), subsystem=None, time=None)

A collection of concepts.

order_by()

Return a list of values to compare for ordering.

The first value in the list has the greatest priority; if the first objects are equal the second object is compared, etc.

to_json()
property mechanisms

The mechanism of each concept.

property phis

The $$\varphi$$ values of each concept.

property labeled_mechanisms

The labeled mechanism of each concept.

class pyphi.models.subsystem.SystemIrreducibilityAnalysis(phi=None, ces=None, partitioned_ces=None, subsystem=None, cut_subsystem=None, time=None)

An analysis of system irreducibility ($$\Phi$$).

Contains the $$\Phi$$ value of the Subsystem, the cause-effect structure, and all the intermediate results obtained in the course of computing them.

These can be compared with the built-in Python comparison operators (<, >, etc.). First, $$\Phi$$ values are compared. Then, if these are equal up to PRECISION, the one with the larger subsystem is greater.

phi

The $$\Phi$$ value for the subsystem when taken against this analysis, i.e. the difference between the cause-effect structure and the partitioned cause-effect structure for this analysis.

Type

float

ces

The cause-effect structure of the whole subsystem.

Type

CauseEffectStructure

partitioned_ces

The cause-effect structure when the subsystem is cut.

Type

CauseEffectStructure

subsystem

The subsystem this analysis was calculated for.

Type

Subsystem

cut_subsystem

The subsystem with the minimal cut applied.

Type

Subsystem

time

The number of seconds it took to calculate.

Type

float

print(ces=True)

Print this SystemIrreducibilityAnalysis, optionally without cause-effect structures.

property small_phi_time

The number of seconds it took to calculate the CES.

property cut

The unidirectional cut that makes the least difference to the subsystem.

property network

The network the subsystem belongs to.

unorderable_unless_eq = ['network']
order_by()

Return a list of values to compare for ordering.

The first value in the list has the greatest priority; if the first objects are equal the second object is compared, etc.

__bool__()

A SystemIrreducibilityAnalysis is True if it has $$\Phi > 0$$.

to_json()

Return a JSON-serializable representation.

classmethod from_json(dct)