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public Substrate ( List |
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| nodeSetList | List |
Substrate nodes, represented as distinct sets of nodes. By convention the first and second /// sets in the list represent the input and output noes respectively. All other sets represent hidden nodes. |
| activationFnLibrary | IActivationFunctionLibrary | The activation function library allocated to the networks that are 'grown' from the substrate. |
| activationFnId | int | The ID of an activation function in activationFnLibrary. This is the activation function /// ID assigned to all nodes in networks that are 'grown' from the substrate. |
| weightThreshold | double | The weight threshold below which substrate connections are not created in grown networks. |
| maxWeight | double | Defines the weight range of grown connections (+-maxWeight). |
| nodeSetMappingList | List |
A list of mappings between node sets that defines what connections to create between substrate nodes. |
| return | System | |
public Substrate(List<SubstrateNodeSet> nodeSetList,
IActivationFunctionLibrary activationFnLibrary, int activationFnId,
double weightThreshold, double maxWeight,
List<NodeSetMapping> nodeSetMappingList)
{
VaildateSubstrateNodes(nodeSetList);
_nodeSetList = nodeSetList;
_inputNodeCount = _nodeSetList[0].NodeList.Count;
_outputNodeCount = _nodeSetList[1].NodeList.Count;
_dimensionality = _nodeSetList[0].NodeList[0]._position.GetUpperBound(0) + 1;
_activationFnLibrary = activationFnLibrary;
_activationFnId = activationFnId;
_weightThreshold = weightThreshold;
_maxWeight = maxWeight;
_weightRescalingCoeff = _maxWeight / (1.0 - _weightThreshold);
_nodeSetMappingList = nodeSetMappingList;
// Get an estimate for the number of connections defined by mappings.
int nonBiasConnectionCountHint = 0;
foreach(NodeSetMapping mapping in nodeSetMappingList) {
nonBiasConnectionCountHint += mapping.GetConnectionCountHint(nodeSetList);
}
if(nonBiasConnectionCountHint <= ConnectionCountCacheThreshold)
{
// Pre-generate the substrate connections and store them in a list.
_connectionList = _connectionCountHint == 0 ? new List<SubstrateConnection>() : new List<SubstrateConnection>(nonBiasConnectionCountHint);
foreach(NodeSetMapping mapping in nodeSetMappingList)
{
IEnumerable<SubstrateConnection> connectionSequence = mapping.GenerateConnections(nodeSetList);
foreach(SubstrateConnection conn in connectionSequence) {
_connectionList.Add(conn);
}
}
_connectionList.TrimExcess();
}
// Set total connection count hint value (includes additional connections to a bias node).
_connectionCountHint = nonBiasConnectionCountHint + CalcBiasConnectionCountHint(nodeSetList);
// Pre-create the network definition node list. This is re-used each time a network is created from the substrate.
_netNodeList = CreateNetworkNodeList();
}
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Substrate::Substrate ( List |
