private void LoadData(BatchInstruction instr, int[] rows, int rowIndex, int batchSize)
{
for (int i = 0; i < batchSize; ++i)
{
var row = rows[rowIndex] + i;
instr.buf[i] = instr.weight * instr.data[row];
}
}
private BatchInstruction[] Compile(ISymbolicExpressionTree tree, IDataset dataset, Func <ISymbolicExpressionTreeNode, byte> opCodeMapper)
{
var root = tree.Root.GetSubtree(0).GetSubtree(0);
var code = new BatchInstruction[root.GetLength()];
if (root.SubtreeCount > ushort.MaxValue)
{
throw new ArgumentException("Number of subtrees is too big (>65.535)");
}
int c = 1, i = 0;
foreach (var node in root.IterateNodesBreadth())
{
if (node.SubtreeCount > ushort.MaxValue)
{
throw new ArgumentException("Number of subtrees is too big (>65.535)");
}
code[i] = new BatchInstruction {
opcode = opCodeMapper(node),
narg = (ushort)node.SubtreeCount,
buf = new double[BATCHSIZE],
childIndex = c
};
if (node is VariableTreeNode variable)
{
code[i].weight = variable.Weight;
if (cachedData.ContainsKey(variable.VariableName))
{
code[i].data = cachedData[variable.VariableName];
}
else
{
code[i].data = dataset.GetReadOnlyDoubleValues(variable.VariableName).ToArray();
cachedData[variable.VariableName] = code[i].data;
}
}
else if (node is ConstantTreeNode constant)
{
code[i].value = constant.Value;
for (int j = 0; j < BATCHSIZE; ++j)
{
code[i].buf[j] = code[i].value;
}
}
c += node.SubtreeCount;
++i;
}
return(code);
}
