コード例 #1
0
ファイル: mutator.go プロジェクト: maxxk/neurvolve
func findDownstreamNodeId(cortex *ng.Cortex, layerMap ng.LayerToNodeIdMap, fromLayer float64) *ng.NodeId {

	numAttempts := len(cortex.AllNodeIds()) * 5

	for i := 0; i < numAttempts; i++ {

		downstreamNodeId := layerMap.ChooseNodeIdFollowingLayer(fromLayer)

		if downstreamNodeId == nil {
			log.Printf("findDownstreamNodeId unable to find downstream neuron, cannot add neuron")
			return nil
		}
		if downstreamNodeId.NodeType == ng.ACTUATOR {
			// make sure it has capacity for new incoming
			actuator := cortex.FindActuator(downstreamNodeId)
			if actuator.CanAddInboundConnection() == false {
				continue
			}
		}
		return downstreamNodeId
	}

	return nil

}
コード例 #2
0
ファイル: mutator.go プロジェクト: maxxk/neurvolve
func Outsplice(cortex *ng.Cortex, chooseOutbound OutboundChooser) (bool, *ng.Neuron) {

	numAttempts := len(cortex.AllNodeIds()) * 5

	for i := 0; i < numAttempts; i++ {
		neuronA := randomNeuron(cortex)
		outbound := chooseOutbound(neuronA)
		if outbound == nil {
			continue
		}

		if neuronA.NodeId.UUID == outbound.NodeId.UUID {
			continue
		}

		nodeIdB := outbound.NodeId

		// figure out which layer neuronK will go in
		nodeIdLayerMap := cortex.NodeIdLayerMap()
		layerA := neuronA.NodeId.LayerIndex
		layerB := nodeIdB.LayerIndex
		layerK := nodeIdLayerMap.LayerBetweenOrNew(layerA, layerB)

		// create neuron K
		neuronK := cortex.CreateNeuronInLayer(layerK)

		// disconnect neuronA <-> nodeB
		nodeBConnector := cortex.FindInboundConnector(nodeIdB)
		ng.DisconnectOutbound(neuronA, nodeIdB)
		ng.DisconnectInbound(nodeBConnector, neuronA)

		// connect neuronA -> neuronK
		weights := randomWeights(1)
		ng.ConnectOutbound(neuronA, neuronK)
		ng.ConnectInboundWeighted(neuronK, neuronA, weights)

		// connect neuronK -> nodeB
		switch nodeIdB.NodeType {
		case ng.NEURON:
			neuronB := cortex.FindNeuron(nodeIdB)
			ng.ConnectOutbound(neuronK, neuronB)
			ng.ConnectInboundWeighted(nodeBConnector, neuronK, weights)
		case ng.ACTUATOR:
			actuatorB := cortex.FindActuator(nodeIdB)
			ng.ConnectOutbound(neuronK, actuatorB)
			ng.ConnectInbound(nodeBConnector, neuronK)
		}
		return true, neuronK

	}
	return false, nil

}
コード例 #3
0
ファイル: mutator.go プロジェクト: maxxk/neurvolve
// Find a nodeId suitable for use as an outbound node for a newly created
// neuron.  This can either be a either another neuron node (including
// the new neuron itself), or an actuator (if it has space), but it cannot
// be a sensor node
func findRecurrentOutboundNodeId(cortex *ng.Cortex, layerMap ng.LayerToNodeIdMap, fromLayer float64) *ng.NodeId {

	numAttempts := len(cortex.AllNodeIds()) * 5

	keys := layerMap.Keys()

	sensorLayer := keys[0]

	for i := 0; i < numAttempts; i++ {
		chosenNodeId := layerMap.ChooseNodeIdFollowingLayer(sensorLayer)
		if chosenNodeId.NodeType == ng.ACTUATOR {
			// make sure it has capacity for new incoming
			actuator := cortex.FindActuator(chosenNodeId)
			if actuator.CanAddInboundConnection() == false {
				continue
			}
		}
		return chosenNodeId

	}

	return nil

}