public Reader(string filePath)
{
var variables = new List <float[]>();
var labels = new List <string>();
var csv = new CsvReader(new StreamReader(filePath));
csv.Configuration.Delimiter = ",";
csv.Configuration.DetectColumnCountChanges = true;
csv.Read();
int variablesCount = csv.Context.ColumnCount;
attributeCount = csv.Context.ColumnCount - 1;
while (csv.Read())
{
variables.Add(new float[csv.Context.ColumnCount - 1]);
for (int i = 0; i < csv.Context.ColumnCount - 1; i++)
{
variables.Last()[i] = csv.GetField <float>(i);
}
labels.Add(csv.GetField <string>(variablesCount - 1));
}
labelToId = labels.Distinct()
.Select((val, index) => new { val, index })
.ToDictionary(x => x.val, x => x.index);
dataSet = new CudaDataSet <int>()
{
Vectors = new FlattArray <float>(variables.ToArray()),
Classes = labels.Select(x => labelToId[x]).ToArray(),
};
dataSet.orginalIndeces = DataSetHelper.CreateIndeces(dataSet);
}
public static void ResetIndeces <T>(this CudaDataSet <T> set)
{
set.orginalIndeces = DataSetHelper.CreateIndeces(set);
}
