public void ComputeGradientsRTLR2(IDisposable state, Marshaled<RTLRLayerInfo[][]> inputLayerInfosM, Marshaled<IDeviceArray[]> netValueDerivatesM, Marshaled<RTLRComputationData2> dataM, IDeviceArray2 pValuesOfWeightsA, IDeviceArray outputsA, IDeviceArray desiredOutputsA, SequenceMarker seqMark) { var data = dataM.Instance(); var inputLayerInfos = inputLayerInfosM.Instance(); var netValueDerivates = netValueDerivatesM.Instance(); var pValuesOfWeights = pValuesOfWeightsA.ToManaged2(); var outputs = outputsA != null ? outputsA.ToManaged() : null; var desiredOutputs = desiredOutputsA != null ? desiredOutputsA.ToManaged() : null; var inputs = data.Inputs != null ? data.Inputs().ToManaged() : null; fixed (float* pOutputs = outputs != null ? outputs.InternalArray : null, pDesiredOutputs = desiredOutputs != null ? desiredOutputs.InternalArray : null, pPValuesOfWeights = pValuesOfWeights.InternalArray, pInputs = inputs != null ? inputs.InternalArray : null) { ManagedArrayPtr? outputsPtr = pOutputs != null ? outputs.ToPtr(pOutputs) : default(ManagedArrayPtr?); ManagedArrayPtr? desiredOutputsPtr = pDesiredOutputs != null ? desiredOutputs.ToPtr(pDesiredOutputs) : default(ManagedArrayPtr?); ManagedArrayPtr? inputsPtr = pInputs != null ? inputs.ToPtr(pInputs) : default(ManagedArrayPtr?); int inputsSize = inputs == null ? 1 : inputs.Size; for (int ijValueIndex = 0; ijValueIndex < pValuesOfWeights.Size1; ijValueIndex++) // group Id { float gradient = 0.0f; int iValueIndex = ijValueIndex / inputsSize; int jValueIndex = ijValueIndex % inputsSize; float inputValue = inputsPtr.HasValue ? inputsPtr.Value[jValueIndex] : 1.0f; for (int kLayerIndex = 0; kLayerIndex < data.ULayersCount; kLayerIndex++) { int kLayerSize = netValueDerivates[kLayerIndex].Size; for (int kValueIndex = 0; kValueIndex < kLayerSize; kValueIndex++) { var layerNetValueDerivates = netValueDerivates[kLayerIndex].ToManaged(); int outputLayerIndex = layerNetValueDerivates.Size - 1; bool computeGradient = kLayerIndex == outputLayerIndex && outputs != null && desiredOutputs != null; var p_i_j_k_Ptr = GetPValuesPtr(pValuesOfWeights, pPValuesOfWeights, ijValueIndex, data, kLayerIndex); float sum = 0.0f; var upperInfos_k = inputLayerInfos[kLayerIndex]; foreach (var lLayerInfo in upperInfos_k) { if (lLayerInfo.IsElementOfU) { Debug.Assert(lLayerInfo.Weights != null); int lLayerIndex = lLayerInfo.Index; var p_i_j_l_Ptr = GetPValuesPtr(pValuesOfWeights, pPValuesOfWeights, ijValueIndex, data, lLayerIndex); var weights = lLayerInfo.Weights.ToManaged2(); fixed (float* pWeights = weights.InternalArray) { var weightsPtr = weights.ToPtr2(pWeights); for (int lValueIndex = 0; lValueIndex < lLayerInfo.Size; lValueIndex++) { sum += weightsPtr[lValueIndex, kValueIndex] * p_i_j_l_Ptr[lValueIndex]; } } } } if (data.ILayerIndex == kLayerIndex && iValueIndex == kValueIndex) sum += inputValue; fixed (float* pLayerNetValueDerivates = layerNetValueDerivates.InternalArray) { p_i_j_k_Ptr[kValueIndex] = layerNetValueDerivates.ToPtr(pLayerNetValueDerivates)[kValueIndex] * sum; } if (computeGradient) { Debug.Assert(outputsPtr.HasValue && desiredOutputsPtr.HasValue); gradient += (desiredOutputsPtr.Value[kValueIndex] - outputsPtr.Value[kValueIndex]) * p_i_j_k_Ptr[kValueIndex]; } } } SetGradientsRTLR(data, ijValueIndex, gradient); } } }
unsafe public void ComputeGradientsRTLR(IDisposable state, Marshaled<RTLRLayerInfo[][]> inputLayerInfosM, Marshaled<IDeviceArray[]> netValueDerivatesM, Marshaled<RTLRComputationData> dataM, Marshaled<IDeviceArray[]> valueRelatedPBuffsM, IDeviceArray outputsA, IDeviceArray desiredOutputsA, SequenceMarker seqMark) { var data = dataM.Instance(); var inputLayerInfos = inputLayerInfosM.Instance(); var netValueDerivates = netValueDerivatesM.Instance(); var outputs = outputsA != null ? outputsA.ToManaged() : null; var desiredOutputs = desiredOutputsA != null ? desiredOutputsA.ToManaged() : null; var inputs = data.Inputs != null ? data.Inputs().ToManaged() : null; var valueRelatedPBuffs = valueRelatedPBuffsM.Instance(); float gradient = 0.0f; fixed (float* pOutputs = outputs != null ? outputs.InternalArray : null, pDesiredOutputs = desiredOutputs != null ? desiredOutputs.InternalArray : null) { float inputValue = inputs != null ? inputs.InternalArray[data.JValueIndex] : 1.0f; int outputLayerIndex = valueRelatedPBuffs.Length - 1; for (int kLayerIndex = 0; kLayerIndex < valueRelatedPBuffs.Length; kLayerIndex++) { var layerNetValueDerivates = netValueDerivates[kLayerIndex].ToManaged(); var p_i_j_k_Values = valueRelatedPBuffs[kLayerIndex].ToManaged(); bool computeGradient = kLayerIndex == outputLayerIndex && pOutputs != null && pDesiredOutputs != null; fixed (float* pLayerNetValueDerivates = layerNetValueDerivates.InternalArray, pp_i_j_k_Values = p_i_j_k_Values.InternalArray) { var layerNetValueDerivatesPtr = layerNetValueDerivates.ToPtr(pLayerNetValueDerivates); var p_i_j_k_ValuesPtr = p_i_j_k_Values.ToPtr(pp_i_j_k_Values); for (int kValueIndex = 0; kValueIndex < p_i_j_k_Values.Size; kValueIndex++) { // i: iLayerIndex, iValueIndex // j: jLayerIndex, jValueIndex // k: kLayerIndex, kValueIndex float sum = 0.0f; var upperInfos_k = inputLayerInfos[kLayerIndex]; foreach (var upperInputLayerInfo in upperInfos_k) { if (upperInputLayerInfo.IsElementOfU) { Debug.Assert(upperInputLayerInfo.Weights != null); int lLayerIndex = upperInputLayerInfo.Index; var p_i_j_l_Values = valueRelatedPBuffs[lLayerIndex].ToManaged(); var weights = upperInputLayerInfo.Weights.ToManaged2(); Debug.Assert(p_i_j_l_Values.Size == weights.Size1); Debug.Assert(weights.Size2 == p_i_j_k_Values.Size); fixed (float* pp_i_j_l = p_i_j_l_Values.InternalArray, pWeights = weights.InternalArray) { var p_i_j_l_ValuesPtr = p_i_j_l_Values.ToPtr(pp_i_j_l); var weightsPtr = weights.ToPtr2(pWeights); for (int lValueIndex = 0; lValueIndex < p_i_j_l_Values.Size; lValueIndex++) { // i: iLayerIndex, iValueIndex // j: jLayerIndex, jValueIndex // k: kLayerIndex, kValueIndex // l: lLayerIndex, lValueIndex sum += weightsPtr[lValueIndex, kValueIndex] * p_i_j_l_ValuesPtr[lValueIndex]; } } } } if (data.ILayerIndex == kLayerIndex && data.IValueIndex == kValueIndex) sum += inputValue; p_i_j_k_ValuesPtr[kValueIndex] = layerNetValueDerivatesPtr[kValueIndex] * sum; if (computeGradient) { var outputsPtr = outputs.ToPtr(pOutputs); var desiredOutputsPtr = desiredOutputs.ToPtr(pDesiredOutputs); gradient += (desiredOutputsPtr[kValueIndex] - outputsPtr[kValueIndex]) * p_i_j_k_ValuesPtr[kValueIndex]; } } } } } if (gradient != 0.0f) SetGradientsRTLR(data, gradient); }
private List <SequenceMarker> SolveSequence(Random random, List <Point> markers, InterferencePattern.Direction[,] connections) { var directions = new List <Coord>(CardinalOffsets); Shuffle(directions, random); var results = new List <SequenceMarker>(); var startPosition = markers.First(); var currentPosition = startPosition; var prevPosition = startPosition; var prevDirection = InterferencePattern.Direction.None; var stepsToNextMarker = 0; SequenceMarker prevMarker = new SequenceMarker { SortOrder = 0, Cell = currentPosition, }; do { stepsToNextMarker++; // Find a direction we can move in that isn't back to where we came from. var currentConnections = connections[currentPosition.X, currentPosition.Y]; var direction = directions.First ( direction => currentConnections.HasFlag(direction.Direction) && direction.OppositeDirection != prevDirection ); prevPosition = currentPosition; currentPosition.Offset(direction.X, direction.Y); prevDirection = direction.Direction; if (prevMarker.SubsequentCellDirection == InterferencePattern.Direction.None) { prevMarker.SubsequentCell = currentPosition; prevMarker.SubsequentCellDirection = prevDirection; } var markerId = markers.IndexOf(currentPosition); if (markerId != -1) { var test = markers[markerId]; // We've reached a new marker, so add it to the results. prevMarker = new SequenceMarker { SortOrder = markerId, Cell = currentPosition, PreviousCell = prevPosition, PreviousCellDirection = prevDirection, }; results.Add(prevMarker); // Update the previous marker with its # steps. prevMarker.StepsToNextMarker = stepsToNextMarker; stepsToNextMarker = 0; } } while (currentPosition != startPosition); var firstStep = results.First(); firstStep.PreviousCell = prevPosition; firstStep.PreviousCellDirection = prevDirection; return(results); }
private void ComputeGradients(int computationIndex, Marshaled<IDeviceArray[]> valueRelatedPBuffs, int iLayerIndex, int iValueIndex, int jLayerIndex, int jValueIndex, int ijValueIndex, IDeviceArray outputs, IDeviceArray desiredOutputs, SequenceMarker seqMark) { #if DEBUG int outputLayerIndex = valueRelatedPBuffs.Instance().Length - 1; Debug.Assert(outputLayerIndex == mlp.Layers.Count - 2); Debug.Assert(outputLayerIndex == mlp.Layers[mlp.Layers.Count - 1].Index - 1); #endif if (codes.Count > computationIndex) { var code = codes[computationIndex]; if (code != null) code(outputs, desiredOutputs); } else { codes.EnsureSize(computationIndex + 1); Action<IDeviceArray, IDeviceArray> code = null; bool forBias = jValueIndex == -1; var dataM = mlp.AsMarshaled(new RTLRComputationData()); var data = dataM.ManagedObject; int iLayerIndexN = iLayerIndex + 1; var iLayer = mlp.Layers[iLayerIndexN]; data.ILayerIndex = iLayerIndex; data.IValueIndex = iValueIndex; data.JLayerIndex = jLayerIndex; data.JValueIndex = jValueIndex; data.IJValueIndex = ijValueIndex; if (forBias) { Debug.Assert(jLayerIndex == 0); data.BiasGradients = mlp.GetBiasGradients(iLayerIndexN); data.BiasGradientSums = mlp.GetBiasGradientSums(iLayerIndexN); } else { Debug.Assert(jLayerIndex > 0); var inputLayerOfILayer = iLayer.Layer.GetInputLayer(jLayerIndex - 1); var inputLayerOfILayerIndex = mlp.GetLayerIndex(inputLayerOfILayer); var weightKey = Tuple.Create(inputLayerOfILayerIndex, iLayerIndexN); data.Inputs = () => mlp.GetNetValues(inputLayerOfILayerIndex); data.Gradients = mlp.GetGradients(weightKey); data.GradientSums = mlp.GetGradientSums(weightKey); } Debug.Assert(!(data.BiasGradients == null && data.BiasGradientSums == null && data.Gradients == null && data.GradientSums == null)); var state = mlp.CreateComputationState(); code = (os, dos) => mlp.Adapter.ComputeActivation.ComputeGradientsRTLR(state, inputLayerInfos, netValueDerivates, dataM, valueRelatedPBuffs, os, dos, seqMark); codes[computationIndex] = code; code(outputs, desiredOutputs); } }
private void ComputeGradients(int iLayerIndex, int jLayerIndex, IDeviceArray2 pValuesOfWeights, IDeviceArray outputs, IDeviceArray desiredOutputs, int computationIndex, SequenceMarker seqMark) { // jLayerIndex: 0: Bias, 1..: Weights if (codes.Count > computationIndex) { var code = codes[computationIndex]; if (code != null) code(outputs, desiredOutputs); } else { codes.EnsureSize(computationIndex + 1); Action<IDeviceArray, IDeviceArray> code = null; bool forBias = jLayerIndex == 0; var dataM = mlp.AsMarshaled(new RTLRComputationData2()); var data = dataM.ManagedObject; data.MaxULayerSize = maxULayerSize; data.ULayersCount = uLayersCount; int iLayerIndexN = iLayerIndex + 1; var iLayer = mlp.Layers[iLayerIndexN]; data.ILayerIndex = iLayerIndex; data.JLayerIndex = jLayerIndex; if (forBias) { Debug.Assert(jLayerIndex == 0); data.BiasGradients = mlp.GetBiasGradients(iLayerIndexN); data.BiasGradientSums = mlp.GetBiasGradientSums(iLayerIndexN); } else { Debug.Assert(jLayerIndex > 0); var inputLayerOfILayer = iLayer.Layer.GetInputLayer(jLayerIndex - 1); var inputLayerOfILayerIndex = mlp.GetLayerIndex(inputLayerOfILayer); var weightKey = Tuple.Create(inputLayerOfILayerIndex, iLayerIndexN); data.Inputs = () => mlp.GetNetValues(inputLayerOfILayerIndex); data.Gradients = mlp.GetGradients(weightKey); data.GradientSums = mlp.GetGradientSums(weightKey); } Debug.Assert(!(data.BiasGradients == null && data.BiasGradientSums == null && data.Gradients == null && data.GradientSums == null)); var state = mlp.CreateComputationState(); code = (os, dos) => mlp.Adapter.ComputeActivation.ComputeGradientsRTLR2(state, inputLayerInfos, netValueDerivates, dataM, pValuesOfWeights, os, dos, seqMark); codes[computationIndex] = code; code(outputs, desiredOutputs); } }