Exemple #1
0
        void Solve()
        {
            #region prepare and assign
            trainingSet.Clear();
            for (int i = 0; i < trainVectorCount; i++)
            {
                List <double> dl = new List <double>();
                for (int j = 0; j < trainVectorDimension; j++)
                {
                    dl.Add(trainVectors[i][j]);
                }
                trainingSet.Add(new TrainingSample(dl.ToArray()));
            }

            ///  process
            ///  start learning

            ///  get learning radius for neighborhood function
            int learningRadius = 0;
            for (int i = 0; i < dimension; i++)
            {
                if (size[i] > learningRadius)
                {
                    learningRadius = size[i];
                }
            }
            learningRadius /= 2;

            INeighborhoodFunction neighborhoodFunction = new GaussianFunction(learningRadius, netUP.neighborDistance) as INeighborhoodFunction;
            if (neighborhood)
            {
                neighborhoodFunction = new MexicanHatFunction(learningRadius) as INeighborhoodFunction;
            }

            LatticeTopology topology = LatticeTopology.Rectangular;
            if (latticeTopology)
            {
                topology = LatticeTopology.Hexagonal;
            }
            /// instantiate relevant network layers
            KohonenLayer       inputLayer  = new KohonenLayer(trainVectorDimension);
            KohonenLayerND     outputLayer = new KohonenLayerND(size, neighborhoodFunction, topology);
            KohonenConnectorND connector   = new KohonenConnectorND(inputLayer, outputLayer, netUP.initialNodes);
            if (netUP.initialNodes.Length != 0)
            {
                connector.Initializer = new GivenInput(netUP.initialNodes);
            }
            else
            {
                connector.Initializer = new RandomFunction(0.0, 1.0);
            }
            outputLayer.SetLearningRate(learningRate, 0.05d);
            outputLayer.IsDimensionCircular = isDimensionCircular;
            network = new KohonenNetworkND(inputLayer, outputLayer);
            network.useRandomTrainingOrder  = randomTrainingOrder;
            inputLayer.ParallelComputation  = false;
            outputLayer.ParallelComputation = parallelComputing;
            #endregion

            #region delegates
            network.BeginEpochEvent += new TrainingEpochEventHandler(
                delegate(object senderNetwork, TrainingEpochEventArgs args)
            {
                #region trainingCylce
                if (network == null || !GO)
                {
                    return;
                }
                trainedVectors = new double[outputLayer.neuronCount, trainVectorDimension];

                for (int i = 0; i < outputLayer.neuronCount; i++)
                {
                    IList <ISynapse> synapses = (network.OutputLayer as KohonenLayerND)[outputLayer.adressBook[i]].SourceSynapses;
                    for (int j = 0; j < trainVectorDimension; j++)
                    {
                        trainedVectors[i, j] = synapses[j].Weight;
                    }
                }

                //make new net here
                netP = new CrowNetSOMNDP(size, isDimensionCircular, latticeTopology, neighborhood, trainedVectors, outputLayer.adressBook);

                counter++;

                #endregion
            });

            network.EndSampleEvent += new TrainingSampleEventHandler(
                delegate(object senderNetwork, TrainingSampleEventArgs args)
            {
                netP.winner = outputLayer.WinnerND.CoordinateND;
            });
            #endregion



            network.Learn(trainingSet, cycles);
        }