static void DoTsne(string[] args)
{
string inFile = (args.Length >= 1) ? args[0] : "";
double perplexityRatio = (args.Length >= 2) ? double.Parse(args[1]) : 0.05;
int epochs = (args.Length >= 3) ? int.Parse(args[2]) : 500;
int outDim = (args.Length >= 4) ? int.Parse(args[3]) : 2;
if (!(inFile.EndsWith(".csv") || inFile.EndsWith(".npy")))
{
Console.WriteLine("Usage: TsneDx.exe <input-file>.csv [perplexity-ratio] [epochs] [out-dim]");
return;
}
string outFile = inFile.Substring(0, inFile.Length - 4) + "_map.csv";
Console.WriteLine("Loading file " + inFile);
float[][] X = inFile.EndsWith(".csv") ? ReadCsvFile(inFile) : TsneMap.ReadNumpyFile(inFile);
Console.WriteLine("Loaded table: " + X.Length + "x" + X[0].Length);
Console.WriteLine(string.Format(
"Running tSNE: Perpelxity Ratio: {0}, Epochs: {1}, Out Dimension: {2}...",
perplexityRatio, epochs, outDim));
using (TsneMap tsne = new TsneMap()
{
PerplexityRatio = perplexityRatio,
MaxEpochs = epochs,
OutDim = outDim
}) {
float[][] Y = tsne.Fit(X);
WriteCsvFile(Y, outFile);
}
}
static void DoPca(string[] args)
{
int outDim = int.Parse(args[0]);
string inFile = args[1];
string outFile = inFile.Substring(0, inFile.Length - 4) + "_pc.csv";
if (!(inFile.EndsWith(".csv") || inFile.EndsWith(".npy")))
{
Console.WriteLine("PCA Usage: TsneDx.exe <out-dim> <input-file>.csv");
return;
}
float[][] X = inFile.EndsWith(".csv") ? ReadCsvFile(inFile) : TsneMap.ReadNumpyFile(inFile);
if (X == null)
{
Console.WriteLine("Cannot load input file: " + TsneMap.ErrorMsg);
return;
}
var pca = new FastPca();
var B = pca.DoPca(X, outDim);
WriteCsvFile(B, outFile);
}
public float[] DoPcaNumpy(float[][] X, int eigenCount)
{
return(TsneMap.Flatten(DoPca(X, eigenCount)));
}
public float[] DoPcaBuffer(long ptr, int rows, int columns, int eigenCount)
{
var matrix = TsneMap.NumpyArrayToMatrix(ptr, rows, columns);
return(TsneMap.Flatten(DoPca(matrix, eigenCount)));
}
public float[] DoPcaNumpyFile(string fileName, int eigenCount)
{
return(TsneMap.Flatten(DoPca(TsneMap.ReadNumpyFile(fileName), eigenCount)));
}