public override void InitialiseFeatures( DatasetName datasetName, object[,] x, object[] y) { Debug.Assert(x != null, "The feature vector must not be null."); Debug.Assert(y != null, "The targe variable must not be null."); Vector[] xV = null; Range r = null; // Validate _validate.Dataset( labels: _mapping.GetClassLabels().ToArray(), datasetName: datasetName, x: x, y: y); // Set meta data _numFeatures = x.GetLength(0); _numObservations = x.GetLength(1); // Transpose double[][] xTrans = new double[_numObservations][]; for (int j = 0; j < _numObservations; j++) { xTrans[j] = new double[_numFeatures]; for (int i = 0; i < _numFeatures; i++) { xTrans[j][i] = (double)x[i, j]; } } // Set target _y = Variable.Observed( Array.ConvertAll(y, v => ( System.Convert.ToInt64(v) > 0) ? true : false)).Named( "y." + datasetName.ToString()); // Set features xV = new Vector[_numObservations]; r = _y.Range.Named("person"); for (int i = 0; i < _numObservations; i++) { xV[i] = Vector.FromArray(xTrans[i]); } _x = Variable.Observed(xV, r).Named("x." + datasetName.ToString()); _availableDatasetName = datasetName; }
public override void InitialiseFeatures( DatasetName datasetName, object[,] x, object[] y) { Debug.Assert(x != null, "The feature vector must not be null."); Debug.Assert(y != null, "The targe variable must not be null."); // Validate _validate.Dataset( labels: _mapping.GetClassLabels().ToArray(), datasetName: datasetName, x: x, y: y); // Set meta data _numFeatures = x.GetLength(0); _numObservations = x.GetLength(1); // Transpose double[][] xTrans = new double[_numObservations][]; for (int j = 0; j < _numObservations; j++) { xTrans[j] = new double[_numFeatures]; for (int i = 0; i < _numFeatures; i++) { xTrans[j][i] = (double)x[i, j]; } } // Set target _y = new List <string>( Array.ConvertAll(y, v => v.ToString())); // Set features _x = new Vector[_numObservations]; for (int i = 0; i < _numObservations; i++) { _x[i] = Vector.FromArray(xTrans[i]); } _availableDatasetName = datasetName; }