`relations`¶

Functions for computing relations among distinctions.

class pyphi.relations.RelationFace(*args, phi=None)¶

A set of (potentially) related causes/effects.

property overlap¶: The set of elements that are in the purview of every relatum.

property congruent_overlap¶

Return the congruent overlap(s) among the relata.

These are the common purview elements among the relata whose specified states are consistent; that is, the largest subset of the union of the purviews such that each relatum specifies the same state for each element.

property purview¶: The purview of the relation face. Alias for congruent_overlap.

property relata_units¶: The Units in the purview of each cause/effect in this face.

property relata_purviews¶: The purview of each cause/effect in this face.

property distinctions¶: The distinctions whose causes/effects are in this face.

property num_distinctions¶: The number of distinctions whose causes/effects are in this face.

to_json()¶

classmethod from_json(data)¶

class pyphi.relations.Relation¶

A set of relation faces forming the relation among a set of distinctions.

property faces¶

property num_faces¶

property purview¶

property is_self_relation¶

property phi¶

distinction_phi_per_unique_purview_unit()¶

property mechanisms¶

pyphi.relations.all_relations(distinctions, min_degree=2, max_degree=None, **kwargs)¶: Yield causal relations among a set of distinctions.

class pyphi.relations.Relations(*args, **kwargs)¶

A set of relations among distinctions.

sum_phi()¶

num_relations()¶

class pyphi.relations.ConcreteRelations(*args, **kwargs)¶

property faces_by_degree¶: Return a dictionary mapping degree to relation faces of that degree.

class pyphi.relations.AnalyticalRelations(distinctions)¶

property self_relations¶

pyphi.relations.relations(distinctions, relation_computation=None, **kwargs)¶: Return causal relations among a set of distinctions.

class pyphi.relations.RelationComputationsRegistry¶

Storage for functions for computing relations.

Users can define custom schemes:

Examples

>>> @relation_computations.register('NONE')  
... def no_relations(subsystem, ces):
...    return Relations([])

And use them by setting config.RELATION_COMPUTATIONS = 'NONE'

desc = 'methods for computing relations'¶

pyphi.relations.concrete_relations(distinctions, **kwargs)¶

pyphi.relations.analytical_relations(distinctions, **kwargs)¶

pyphi.relations.relation(distinctions)¶

relations¶

`relations`¶