pyneat.innovation module¶

Module for tracking structural innovations in genomes during evolution.

class pyneat.innovation.InnovationRecord(key, innov_type, node_in, node_out)[source]¶

Record information about a structural mutations for comparison against other mutations.

key¶

A unique identifier for the record.

Type:	int

innov_type¶

The type of structural mutation that occurred.

Type:	InnovationType

node_in¶

The incoming node for the new connection or node (at the time of the mutation occurring in the case of new node mutations).

Type:	int

node_out¶

The outgoing node for the new connection or node (at the time of the mutation occurring in the case of new node mutations).

Type:	int

class pyneat.innovation.InnovationStore[source]¶

Store records of new node and connection mutations for lookup. Also responsible for generating unique innovation keys.

key_to_record¶

A dictionary containing innovation records for each new structural mutation, indexed by innovation keys.

Type:	dict

mutation_to_key¶

A dictionary containing innovation keys, indexed by mutations (node_in, node_out, innovation_type).

Type:	dict

_innovation_key_generator¶

Generates the next innovation key.

Type:	generator

get_innovation_key(node_in, node_out, innovation_type)[source]¶

Get a new or existing innovation key for a structural mutation.

Parameters:	node_in (int) – The input node to the new node/connection. node_out (int) – The output node to the new node/connection. innovation_type (InnovationType) – The type of structural mutation.
Returns:	The innovation key for the mutation.
Return type:	int

class pyneat.innovation.InnovationType[source]¶

Define the types of structural innovations.