public void TestVelocityOnPlane()
{
Frisbee.SimulationState st = new Frisbee.SimulationState
{
VX = 1,
VY = 1,
Theta = Math.PI / 4
};
Matrix<double> transformation =
new SparseMatrix(new [,]
{
{st.CosTheta, st.SinTheta*st.SinPhi, -st.SinTheta*st.CosPhi},
{0, st.CosPhi, st.SinPhi},
{st.SinTheta, -st.CosTheta*st.SinPhi, st.CosTheta*st.CosPhi}
});
SparseVector c3 = new SparseVector(transformation.Row(2));
SparseVector velocity = new SparseVector(new[] { st.VX, st.VY, st.VZ });
double velocityMagnitude = velocity.Norm(2);
double velocityC3 = velocity.DotProduct(c3);
Vector<double> vp = velocity.Subtract(c3.Multiply(velocityC3));
double vpMagnitude = vp.Norm(2);
}
/// <summary>
/// Learn the current input.
/// </summary>
/// <param name="input"></param>
/// <exception cref="HtmRuleException"></exception>
public override void Learn(SparseMatrix input)
{
// Limitation due to HTM v1.x design (cannot learn after inference without modifying ouput vector structure)
if (!IsLearning)
// TODOlater allow learning after training when using FixedMaxSize nodes
throw new HtmRuleException("Cannot learn after any other mode than learning", this);
// Ignore blank input
//TODOlater? treat any input with identical values for *all* components as blank?
//TODOlater use DetectBlanks/DetectBlanksMode properties
if (input.NonZerosCount == 0)
{ return; }
// Check matrix size
if (CoincidencesFrequencies.Count > 0 &&
(CoincidencesFrequencies.Keys.First().RowCount != input.RowCount || CoincidencesFrequencies.Keys.First().ColumnCount != input.ColumnCount))
throw new HtmRuleException("Cannot learn varying sized inputs", this);
SparseMatrix existingCoincidence = FindClosestCoincidence(input);
if (existingCoincidence != null)
CoincidencesFrequencies[existingCoincidence] += 1;
else
if (CoincidencesFrequencies.Count < MaxOutputSize)
CoincidencesFrequencies[input] = 1;
}
public void ErrorWhenLearningAfterInferenceMode()
{
var node = new SpatialNode2DGaussian();
var mat = new SparseMatrix(4, 4, 4.0);
var learnAfterInferFails = false;
var learnAfterTBInferFails = false;
node.Learn(mat);
node.Infer(mat);
try
{
node.Learn(mat);
}
catch (HtmRuleException e)
{
learnAfterInferFails = true;
Debug.WriteLine(e.Message);
}
node.TimeInfer(mat);
try
{
node.Learn(mat);
}
catch (HtmRuleException e)
{
learnAfterTBInferFails = true;
Debug.WriteLine(e.Message);
}
Assert.IsTrue(learnAfterInferFails);
Assert.IsTrue(learnAfterTBInferFails);
}
public void SolveWideMatrixThrowsArgumentException()
{
var matrix = new SparseMatrix(2, 3);
var input = new DenseVector(2);
var solver = new MlkBiCgStab();
Assert.Throws<ArgumentException>(() => matrix.SolveIterative(input, solver));
}
public void SolveLongMatrixThrowsArgumentException()
{
var matrix = new SparseMatrix(3, 2);
var input = new DenseVector(3);
var solver = new GpBiCg();
Assert.Throws<ArgumentException>(() => matrix.SolveIterative(input, solver));
}
public void SolveLongMatrixThrowsArgumentException()
{
var matrix = new SparseMatrix(3, 2);
var input = new DenseVector(3);
var solver = new MlkBiCgStab();
Assert.That(() => matrix.SolveIterative(input, solver), Throws.ArgumentException);
}
public void SparseMatrixSubMatrixMethodWorks()
{
var matrix = new SparseMatrix(10, 10, 1.0);
var sub = matrix.SubMatrix(8, 2, 0, 2);
Assert.AreEqual(2, sub.RowCount);
Assert.AreEqual(2, sub.ColumnCount);
}
public void SolveWideMatrixThrowsArgumentException()
{
var matrix = new SparseMatrix(2, 3);
var input = new DenseVector(2);
var solver = new TFQMR();
Assert.That(() => matrix.SolveIterative(input, solver), Throws.ArgumentException);
}
/// <summary>
/// Create unit matrix.
/// </summary>
/// <param name="size">Matrix size.</param>
/// <returns>New unit matrix.</returns>
internal SparseMatrix CreateUnitMatrix(int size)
{
var matrix = new SparseMatrix(size);
for (var i = 0; i < size; i++)
{
matrix[i, i] = 2;
}
return matrix;
}
/// <summary>
/// Check the result.
/// </summary>
/// <param name="preconditioner">Specific preconditioner.</param>
/// <param name="matrix">Source matrix.</param>
/// <param name="vector">Initial vector.</param>
/// <param name="result">Result vector.</param>
protected override void CheckResult(IPreconditioner<double> preconditioner, SparseMatrix matrix, Vector<double> vector, Vector<double> result)
{
Assert.AreEqual(typeof (UnitPreconditioner<double>), preconditioner.GetType(), "#01");
// Unit preconditioner is doing nothing. Vector and result should be equal
for (var i = 0; i < vector.Count; i++)
{
Assert.IsTrue(vector[i] == result[i], "#02-" + i);
}
}
public void SparseMatrixSubtractsCorrectlyFromZeroComponents()
{
var m1 = new SparseMatrix(new double[,] { { 1, 0, 0, 1 }, { 1, 1, 0, 1 } });
var m2 = new SparseMatrix(new double[,] { { 1, 1, 1, 0 }, { 1, 0, 0, 1 } });
var diff1 = new SparseMatrix(new double[,] { { 0, -1, -1, 1 }, { 0, 1, 0, 0 } });
var diff2 = new SparseMatrix(new double[,] { { 0, 1, 1, -1 }, { 0, -1, 0, 0 } });
Assert.AreEqual(diff2, m2 - m1);
Assert.AreEqual(diff1, m1 - m2);
}
public void SparseMatrixAddsCorrectlyToZeroComponents()
{
var m1 = new SparseMatrix(1, 3);
var m2 = new SparseMatrix(new double[,] { { 0, 1, 1 } });
var sum1 = m1 + m2;
var sum2 = m2 + m1;
Assert.AreEqual(m2, sum2);
Assert.AreEqual(m2, sum1);
}
/// <summary>
/// Check the result.
/// </summary>
/// <param name="preconditioner">Specific preconditioner.</param>
/// <param name="matrix">Source matrix.</param>
/// <param name="vector">Initial vector.</param>
/// <param name="result">Result vector.</param>
protected override void CheckResult(IPreconditioner<double> preconditioner, SparseMatrix matrix, Vector<double> vector, Vector<double> result)
{
Assert.AreEqual(typeof (DiagonalPreconditioner), preconditioner.GetType(), "#01");
// Compute M * result = product
// compare vector and product. Should be equal
var product = new DenseVector(result.Count);
matrix.Multiply(result, product);
for (var i = 0; i < product.Count; i++)
{
Assert.IsTrue(vector[i].AlmostEqualNumbersBetween(product[i], -Epsilon.Magnitude()), "#02-" + i);
}
}
public void BuildRatingMatrix(List<Movie> movies)
{
ratingMatrix = InitMatrix(movies);
for (int i = 0; i < movies.Count; i++)
{
Dictionary<int, int> ratings = movies[i].Ratings;
foreach (var rating in ratings)
{
ratingMatrix[i, userMap[rating.Key]] = rating.Value;
}
movieMap.Add(movies[i].Id, i);
}
}
public static SparseMatrix Extract(this SparseMatrix matrix, int[] rows, int[] columns)
{
var extractedMatrix = new SparseMatrix(rows.Length, columns.Length);
for (int c = 0; c < columns.Length; c++)
{
for (int r = 0; r < rows.Length; r++)
{
extractedMatrix[r, c] = matrix[rows[r], columns[c]];
}
}
return extractedMatrix;
}
/// <summary>
/// Do Flash inference for the given input
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public override Vector Infer(SparseMatrix input)
{
State = NodeState.FlashInference;
if (LearnedCoincidences.Length == 0)
{
return new SparseVector(1);
}
var output = new DenseVector(LearnedCoincidences.Length);
for (int i = 0; i < LearnedCoincidences.Length; ++i)
{
var diff = LearnedCoincidences[i] - input;
var norm = diff.FrobeniusNorm();
output[i] = Math.Exp(-(norm * norm) / (2 * SquaredSigma));
}
return output;
}
/// <summary>
/// List indexing is 2000x faster than Matrix.Row() or enumeration.
/// </summary>
public static void SpeedOfGetRow()
{
SparseMatrix myMatrix = new SparseMatrix(1000, 1000);
SparseVector myVector = SparseVector.OfVector(Vector.Build.Random(1000));
myVector.CoerceZero(1.8);
for (int i = 0; i < 1000; i++)
{
myMatrix.SetRow(i, myVector);
}
List<Vector<double>> myList = new List<Vector<double>>(myMatrix.EnumerateRows());
Utils.StartTimer();
for (int repeat = 0; repeat < 10; repeat++)
{
for (int i = 0; i < 1000; i++)
{
double foo = myMatrix.Row(i)[0];
}
}
Utils.StopTimer();
Utils.StartTimer();
for (int repeat = 0; repeat < 10; repeat++)
{
foreach(var row in myMatrix.EnumerateRowsIndexed())
{
double foo = row.Item2[0];
}
}
Utils.StopTimer();
Utils.StartTimer();
for (int repeat = 0; repeat < 10; repeat++)
{
for (int i = 0; i < 1000; i++)
{
double foo = myList[i][0];
}
}
Utils.StopTimer();
}
public SimpleComponentFinder(Matrix degree, Matrix adjacency, TokenIndexMap tokens, int clusterCount)
{
//var spectralDecomposition = dependencies.Evd ();
//var smallestEigenvector = spectralDecomposition.EigenVectors.Row (1);
//ComponentCount = Math.Min (smallestEigenvector.Count, clusterCount);
var laplacian = degree - adjacency;
var fiedlerVector = laplacian.Evd().EigenVectors.Row(1);
clusterCount = (int)Math.Min(fiedlerVector.Count(d => d != 0d) / 2.0d, clusterCount);
var offset = (fiedlerVector.Minimum() < 0d ? (-1.0d * fiedlerVector.Minimum()) + EPSILON : EPSILON);
var shifted = fiedlerVector.Add(offset);
var sortedElements = shifted.Select((e, i) => new KeyValuePair <int, double> (i, e))
.OrderByDescending(kv => kv.Value).Reverse().ToList();
var breaks = NaturalBreaks((from kv in sortedElements
select kv.Value).ToList(), clusterCount);
var firstGroup = sortedElements.Where(e => e.Value < breaks.ElementAt(0)).Select(e => tokens [e.Key]).ToList();
var secondGroup = sortedElements.Where(e => e.Value < breaks.ElementAt(1) && (!firstGroup.Contains(tokens[e.Key])))
.Select(e => tokens [e.Key]).ToList();
var thirdGroup = sortedElements.Where(e => (!firstGroup.Contains(tokens[e.Key])) && (!secondGroup.Contains(tokens[e.Key])))
.Select(e => tokens [e.Key]).ToList();
}
public SparseMatrix GetMeanMatrix()
{
SparseMatrix meanMatix = new SparseMatrix(ratingMatrix.RowCount, ratingMatrix.ColumnCount);
double totalMean = ratingMatrix.SumMatrix() * (1 / (double)ratingMatrix.NonZerosCount);
SparseVector movieMeans = ratingMatrix.MeanRowVector();
SparseVector userMeans = ratingMatrix.MeanColumnVector();
for (int i = 0; i < meanMatix.RowCount; i++)
{
for (int j = 0; j < meanMatix.ColumnCount; j++)
{
double cell = ratingMatrix[i, j];
if (cell > 0 || cell < 0)
meanMatix[i, j] = ratingMatrix[i, j] - movieMeans[i] - userMeans[j] + totalMean;
}
}
return meanMatix;
}
public void CanLearnAndInfer1OnRecognizedSubInputs_5By4Layer0_5Coverage()
{
uint maxoutputsize = 5;
var coverage = 0.5;
var clone = false;
uint layerheight = 5;
uint layerwidth = 4;
int inputtolayerratio = 2;
var layer = new Spatial2DLayer(SpatialLayerType.Gaussian, layerheight, layerwidth, coverage, clone, maxoutputsize);
var input1 = new SparseMatrix((int)layerheight * inputtolayerratio, (int)layerwidth * inputtolayerratio, 1.0);
var input2 = 2 * input1;
//
layer.Learn(input1);
layer.Learn(input2);
var infer2 = layer.Infer(input2);
var infer1 = layer.Infer(input1);
var input3 = (SparseMatrix)new SparseMatrix((int)layerwidth * inputtolayerratio, (int)layerwidth * inputtolayerratio, 1.0)
.Stack(new SparseMatrix((int)(layerheight - layerwidth) * inputtolayerratio, (int)layerwidth * inputtolayerratio, 3.0));
var infer3 = layer.Infer(input3);
//
foreach (var infer in new SparseMatrix[] { infer1, infer2, infer3 })
{
for (int row = 0; row < layerheight; row++)
{
for (int col = 0; col < layerwidth * layer.MaxNodeOutputSize; col += layer.MaxNodeOutputSize)
{
var subInput = infer.SubMatrix(row, 1, col, layer.MaxNodeOutputSize);
if (infer.Equals(infer3) && row >= layerheight - 2 && row < layerheight)
for (int i = 0; i < subInput.ColumnCount; i++)
Assert.IsTrue(subInput[0, i] < 0.1);
else
Assert.IsTrue(subInput[0, 0] == 1.0 || subInput[0, 1] == 1.0);
}
}
}
}
public void CanAddSparseMatricesBothWays()
{
var m1 = new SparseMatrix(1, 3);
var m2 = Matrix<double>.Build.SparseOfArray(new double[,] { { 0, 1, 1 } });
var sum1 = m1 + m2;
var sum2 = m2 + m1;
Assert.IsTrue(sum1.Equals(m2));
Assert.IsTrue(sum1.Equals(sum2));
Matrix<double> sparseResult = new SparseMatrix(1, 3);
sparseResult.Add(m2, sparseResult);
Assert.IsTrue(sparseResult.Equals(sum1));
sparseResult = Matrix<double>.Build.SparseOfArray(new double[,] { { 0, 1, 1 } });
sparseResult.Add(m1, sparseResult);
Assert.IsTrue(sparseResult.Equals(sum1));
sparseResult = Matrix<double>.Build.SparseOfArray(new double[,] { { 0, 1, 1 } });
m1.Add(sparseResult, sparseResult);
Assert.IsTrue(sparseResult.Equals(sum1));
sparseResult = Matrix<double>.Build.SparseOfArray(new double[,] { { 0, 1, 1 } });
sparseResult.Add(sparseResult, sparseResult);
Assert.IsTrue(sparseResult.Equals(2*sum1));
Matrix<double> denseResult = new DenseMatrix(1, 3);
denseResult.Add(m2, denseResult);
Assert.IsTrue(denseResult.Equals(sum1));
denseResult = Matrix<double>.Build.DenseOfArray(new double[,] { { 0, 1, 1 } });
denseResult.Add(m1, denseResult);
Assert.IsTrue(denseResult.Equals(sum1));
var m3 = Matrix<double>.Build.DenseOfArray(new double[,] { { 0, 1, 1 } });
var sum3 = m1 + m3;
var sum4 = m3 + m1;
Assert.IsTrue(sum3.Equals(m3));
Assert.IsTrue(sum3.Equals(sum4));
}
public void SparseMatrixIndexedEnumeratorWorks()
{
var cols = 7;
var rows = 7;
var matrix = new SparseMatrix(rows, cols, new double[] { 2.7461515689052E-06, 2.7461515689052E-06, 2.7461515689052E-06, 2.7461515689052E-06, 2.7461515689052E-06, 2.7461515689052E-06, 2.7461515689052E-06, /**/2.7461515689052E-06, 2.7461515689052E-06, 2.7461515689052E-06, 34.5104995998366, 3.30253638788279, 2.7461515689052E-06, 2.7461515689052E-06, /**/2.7461515689052E-06, 2.7461515689052E-06, 3.30253638788279, 255, 3.30253638788279, 2.7461515689052E-06, 2.37450036851675E-06, /**/2.7461515689052E-06, 2.7461515689052E-06, 24.4026090935093, 255, 24.4026090935093, 2.7461515689052E-06, 2.7461515689052E-06, /**/2.7461515689052E-06, 2.7461515689052E-06, 3.30253638788279, 34.5104995998366, 3.30253638788279, 2.7461515689052E-06, 2.37450036851675E-06, /**/2.7461515689052E-06, 2.7461515689052E-06, 2.7461515689052E-06, 2.7461515689052E-06, 2.7461515689052E-06, 2.7461515689052E-06, 2.7461515689052E-06, /**/2.7461515689052E-06, 2.7461515689052E-06, 2.7461515689052E-06, 6.62979636198309E-06, 2.7461515689052E-06, 2.7461515689052E-06, 2.7461515689052E-06 });
var normalized = matrix.Normalize(1.0, 2.7461515689052E-06);
//
var count = 0;
foreach (var el in matrix.IndexedEnumerator())
{
count++;
}
var count2 = 0;
foreach (var el in normalized.IndexedEnumerator())
{
count2++;
}
//
Assert.AreEqual(cols * rows, count);
Assert.AreEqual(cols * rows, count2);
}
public BasicFluid2D(int max_x, int max_y)
{
if (max_x != max_y) throw new ArgumentException();
this.max_x = max_x;
this.max_y = max_y;
u_x = new double[max_x + 1, max_y];
u_y = new double[max_x, max_y + 1];
cells = new GridCell[max_x, max_y];
A = new SparseMatrix(max_x * max_y);
for (int i = 0; i < max_x; i++)
for (int j = 0; j < max_y; j++)
{
A[i * max_x + j, i * max_x + j] = 2 + (i == 0 || i + 1 == max_x ? 1 : 0) + (j == 0 || j + 1 == max_y ? 1 : 0);
if (i > 0)
A[(i - 1) * max_x + j, i * max_x + j] = A[i * max_x + j, (i - 1) * max_x + j] = -1;
if (j > 0)
A[i * max_x + j - 1, i * max_x + j] = A[i * max_x + j, i * max_x + j - 1] = -1;
if (i < max_x - 1)
A[(i + 1) * max_x + j, i * max_x + j] = A[i * max_x + j, (i + 1) * max_x + j] = -1;
if (j < max_y - 1)
A[i * max_x + j + 1, i * max_x + j] = A[i * max_x + j, i * max_x + j + 1] = -1;
cells[i, j] = new GridCell();
//cells[i, j].Adiag = (short)(2 + (i == 0 || i + 1 == max_x ? 1 : 0) + (j == 0 || j + 1 == max_y ? 1 : 0));
//cells[i, j].Aplusi = (short)(i + 1 < max_x ? -1 : 0);
//cells[i, j].Aplusj = (short)(j + 1 < max_y ? -1 : 0);
if (new Vector2(i - max_x / 2, j - max_y / 2).LengthSquared < max_x * max_y / 16)
cells[i, j].ImplicitSurface = 5;
}
using (TextWriter tw = new StreamWriter("output.txt")) tw.WriteLine(A.ToMatrixString(900, 900));
solver = new
MathNet.Numerics.LinearAlgebra.Double.Solvers.Preconditioners.IncompleteLU();
solver.Initialize(A);
p = new DenseVector(max_x * max_y);
d = new DenseVector(max_x * max_y);
}
/// <summary>
/// Creates a new <see cref="SparseMatrix"/> and inserts the given row at the given index.
/// </summary>
/// <param name="rowIndex">The index of where to insert the row.</param>
/// <param name="row">The row to insert.</param>
/// <returns>A new <see cref="SparseMatrix"/> with the inserted column.</returns>
/// <exception cref="ArgumentNullException">If <paramref name="row"/> is <see langword="null" />. </exception>
/// <exception cref="ArgumentOutOfRangeException">If <paramref name="rowIndex"/> is < zero or > the number of rows.</exception>
/// <exception cref="ArgumentException">If the size of <paramref name="row"/> != the number of columns.</exception>
public override Matrix<double> InsertRow(int rowIndex, Vector<double> row)
{
if (row == null)
{
throw new ArgumentNullException("row");
}
if (rowIndex < 0 || rowIndex > RowCount)
{
throw new ArgumentOutOfRangeException("rowIndex");
}
if (row.Count != ColumnCount)
{
throw new ArgumentException(Resources.ArgumentMatrixSameRowDimension, "row");
}
var result = new SparseMatrix(RowCount + 1, ColumnCount);
for (var i = 0; i < rowIndex; i++)
{
result.At(i, i, At(i, i));
}
result.SetRow(rowIndex, row);
for (var i = rowIndex + 1; i < result.RowCount; i++)
{
result.At(i, i - 1, At(i - 1, i - 1));
}
return result;
}
/// <summary>
/// Creates a new <see cref="SparseMatrix"/> and inserts the given column at the given index.
/// </summary>
/// <param name="columnIndex">The index of where to insert the column.</param>
/// <param name="column">The column to insert.</param>
/// <returns>A new <see cref="SparseMatrix"/> with the inserted column.</returns>
/// <exception cref="ArgumentNullException">If <paramref name="column "/> is <see langword="null" />. </exception>
/// <exception cref="ArgumentOutOfRangeException">If <paramref name="columnIndex"/> is < zero or > the number of columns.</exception>
/// <exception cref="ArgumentException">If the size of <paramref name="column"/> != the number of rows.</exception>
public override Matrix<double> InsertColumn(int columnIndex, Vector<double> column)
{
if (column == null)
{
throw new ArgumentNullException("column");
}
if (columnIndex < 0 || columnIndex > ColumnCount)
{
throw new ArgumentOutOfRangeException("columnIndex");
}
if (column.Count != RowCount)
{
throw new ArgumentException(Resources.ArgumentMatrixSameRowDimension, "column");
}
var result = new SparseMatrix(RowCount, ColumnCount + 1);
for (var i = 0; i < columnIndex; i++)
{
result.SetColumn(i, Column(i));
}
result.SetColumn(columnIndex, column);
for (var i = columnIndex + 1; i < ColumnCount + 1; i++)
{
result.SetColumn(i, Column(i - 1));
}
return result;
}
/// <summary>
/// Outer product of two vectors
/// </summary>
/// <param name="u">First vector</param>
/// <param name="v">Second vector</param>
/// <returns>Matrix M[i,j] = u[i]*v[j] </returns>
/// <exception cref="ArgumentNullException">If the u vector is <see langword="null" />.</exception>
/// <exception cref="ArgumentNullException">If the v vector is <see langword="null" />.</exception>
public static Matrix<double> OuterProduct(SparseVector u, SparseVector v)
{
if (u == null)
{
throw new ArgumentNullException("u");
}
if (v == null)
{
throw new ArgumentNullException("v");
}
var matrix = new SparseMatrix(u.Count, v.Count);
for (var i = 0; i < u._storage.ValueCount; i++)
{
for (var j = 0; j < v._storage.ValueCount; j++)
{
matrix.At(i, j, u._storage.Values[i] * v._storage.Values[j]);
}
}
return matrix;
}
static void Main(string[] args)
{
Stopwatch timer = new Stopwatch();
/*Console.WriteLine(Stopwatch.Frequency);
* Console.WriteLine(Stopwatch.IsHighResolution);
* Console.WriteLine(Stopwatch.GetTimestamp());
* DateTime now = new DateTime();
* long totalMS = 0;
* long totalTicks = 0;
* long[] msHistory = new long[10000];
* long[] ticksHistory = new long[10000];
* for (int i = 0; i < 10000; ++i)
* {
* timer.Restart();
* now = DateTime.Now;
* timer.Stop();
* totalMS += timer.ElapsedMilliseconds;
* totalTicks += timer.ElapsedTicks;
* msHistory[i] = timer.ElapsedMilliseconds;
* ticksHistory[i] = timer.ElapsedTicks;
* System.Threading.Thread.Sleep(20);
* }
* Console.WriteLine(Stopwatch.GetTimestamp());
* Console.WriteLine("{0} - {1}", msHistory.Average(), ticksHistory.Average());
* Console.ReadLine();*/
//TestMatrix();
//Console.ReadLine();
var matrix = Matrix.Deserialize(@"E:\Work Programming\Insight Program Files\Neural Network\AreaStats2.mtx");
lin.Matrix <double> matrix2 = null;
var compacted = new double[matrix.Count];
Array.Copy(matrix._compactedMatrix, compacted, matrix.Count);
int numCols = matrix.NumCols;
int numRows = matrix.NumRows;
var storage = lin.Storage.SparseCompressedRowMatrixStorage <double> .OfRowArrays(matrix.ToArray());
Console.WriteLine("Compacted Initialization:");
long matrixMS = 0;
long matrixTicks = 0;
long matrix2MS = 0;
long matrix2Ticks = 0;
for (int i = 0; i < 1024; ++i)
{
matrix = null;
timer.Restart();
matrix = new Matrix(compacted, numCols);
timer.Stop();
matrixMS += timer.ElapsedMilliseconds;
matrixTicks += timer.ElapsedTicks;
matrix2 = null;
timer.Restart();
matrix2 = new dbl.SparseMatrix(storage);
timer.Stop();
matrix2MS += timer.ElapsedMilliseconds;
matrix2Ticks += timer.ElapsedTicks;
}
Console.WriteLine("\tMatrix1: {0} - {1}", matrixMS, matrixTicks);
Console.WriteLine("\tMatrix2: {0} - {1}", matrix2MS, matrix2Ticks);
matrixMS = 0;
matrixTicks = 0;
matrix2MS = 0;
matrix2Ticks = 0;
Console.WriteLine("Transposition: ");
for (int i = 0; i < 1024; ++i)
{
timer.Restart();
matrix = matrix.T();
timer.Stop();
matrixMS += timer.ElapsedMilliseconds;
matrixTicks += timer.ElapsedTicks;
timer.Restart();
matrix2 = matrix2.Transpose();
timer.Stop();
matrix2MS += timer.ElapsedMilliseconds;
matrix2Ticks += timer.ElapsedTicks;
}
Console.WriteLine("\tMatrix1: {0} - {1}", matrixMS, matrixTicks);
Console.WriteLine("\tMatrix2: {0} - {1}", matrix2MS, matrix2Ticks);
matrixMS = 0;
matrixTicks = 0;
matrix2MS = 0;
matrix2Ticks = 0;
Console.ReadLine();
/*long loadFileSumMS = 0;
* long loadFileSumTicks = 0;
* long serializeFileSumMS = 0;
* long serializeFileSumTicks = 0;
*
* Matrix matrix = null;
*
* Console.WriteLine("Human-readable:");
*
* for (int i = 0; i < 1024; ++i)
* {
* timer.Restart();
* matrix = Matrix.LoadFile(@"E:\Insight Temp Files\Lists\AreaStats.mtx");
* timer.Stop();
* loadFileSumMS += timer.ElapsedMilliseconds;
* loadFileSumTicks += timer.ElapsedTicks;
* timer.Restart();
* matrix.SerializeToFile(@"E:\Insight Program Files\Neural Network", "AreaStats");
* timer.Stop();
* matrix = null;
* serializeFileSumMS += timer.ElapsedMilliseconds;
* serializeFileSumTicks += timer.ElapsedTicks;
* }
*
* Console.WriteLine("\tLoad File: {0} - {1}", loadFileSumMS / 1024, loadFileSumTicks / 1024);
* Console.WriteLine("\tSerialize to File: {0} - {1}", serializeFileSumMS / 1024, serializeFileSumTicks/ 1024);
* GC.Collect();
* loadFileSumMS = 0;
* loadFileSumTicks = 0;
* serializeFileSumMS = 0;
* serializeFileSumTicks = 0;
*
* Console.WriteLine();
* Console.WriteLine("Binary format:");
* matrix = Matrix.LoadFile(@"E:\Insight Temp Files\Lists\AreaStats.mtx");
*
* for (int i = 0; i < 1024; ++i)
* {
* timer.Restart();
* matrix.SerializeToFile2(@"E:\Insight Program Files\Neural Network", "AreaStats2");
* timer.Stop();
* serializeFileSumMS += timer.ElapsedMilliseconds;
* serializeFileSumTicks += timer.ElapsedTicks;
* matrix = null;
* timer.Restart();
* matrix = Matrix.LoadFile2(@"E:\Insight Program Files\Neural Network\AreaStats2.mtx");
* timer.Stop();
* loadFileSumMS += timer.ElapsedMilliseconds;
* loadFileSumTicks += timer.ElapsedTicks;
* }
*
* Console.WriteLine("\tLoad File: {0} - {1}", loadFileSumMS / 1024, loadFileSumTicks / 1024);
* Console.WriteLine("\tSerialize to File: {0} - {1}", serializeFileSumMS / 1024, serializeFileSumTicks / 1024);
*
* Console.ReadLine();*/
}
public void SolveWideMatrixThrowsArgumentException()
{
var matrix = new SparseMatrix(2, 3);
var input = new DenseVector(2);
var solver = new TFQMR();
Assert.Throws<ArgumentException>(() => solver.Solve(matrix, input));
}
public void SolvePoissonMatrixAndBackMultiply()
{
// Create the matrix
var matrix = new SparseMatrix(100);
// Assemble the matrix. We assume we're solving the Poisson equation
// on a rectangular 10 x 10 grid
const int GridSize = 10;
// The pattern is:
// 0 .... 0 -1 0 0 0 0 0 0 0 0 -1 4 -1 0 0 0 0 0 0 0 0 -1 0 0 ... 0
for (var i = 0; i < matrix.RowCount; i++)
{
// Insert the first set of -1's
if (i > (GridSize - 1))
{
matrix[i, i - GridSize] = -1;
}
// Insert the second set of -1's
if (i > 0)
{
matrix[i, i - 1] = -1;
}
// Insert the centerline values
matrix[i, i] = 4;
// Insert the first trailing set of -1's
if (i < matrix.RowCount - 1)
{
matrix[i, i + 1] = -1;
}
// Insert the second trailing set of -1's
if (i < matrix.RowCount - GridSize)
{
matrix[i, i + GridSize] = -1;
}
}
// Create the y vector
var y = DenseVector.Create(matrix.RowCount, i => 1);
// Create an iteration monitor which will keep track of iterative convergence
var monitor = new Iterator<double>(new IIterationStopCriterium<double>[]
{
new IterationCountStopCriterium<double>(MaximumIterations),
new ResidualStopCriterium(ConvergenceBoundary),
new DivergenceStopCriterium(),
new FailureStopCriterium()
});
var solver = new TFQMR(monitor);
// Solve equation Ax = y
var x = solver.Solve(matrix, y);
// Now compare the results
Assert.IsNotNull(x, "#02");
Assert.AreEqual(y.Count, x.Count, "#03");
// Back multiply the vector
var z = matrix.Multiply(x);
// Check that the solution converged
Assert.IsTrue(monitor.HasConverged, "#04");
// Now compare the vectors
for (var i = 0; i < y.Count; i++)
{
Assert.IsTrue(Math.Abs(y[i] - z[i]).IsSmaller(ConvergenceBoundary, 1), "#05-" + i);
}
}
/// <summary>
/// Create a new sparse matrix with the diagonal as a copy of the given vector.
/// This new matrix will be independent from the vector.
/// A new memory block will be allocated for storing the matrix.
/// </summary>
public static SparseMatrix OfDiagonalVector(int rows, int columns, Vector<double> diagonal)
{
var m = new SparseMatrix(rows, columns);
m.SetDiagonal(diagonal);
return m;
}
/// <summary>
/// Create a new sparse matrix with the diagonal as a copy of the given vector.
/// This new matrix will be independent from the vector.
/// A new memory block will be allocated for storing the matrix.
/// </summary>
public static SparseMatrix OfDiagonalVector(Vector<double> diagonal)
{
var m = new SparseMatrix(diagonal.Count, diagonal.Count);
m.SetDiagonal(diagonal);
return m;
}
/// <summary>
/// Create a new sparse matrix with the diagonal as a copy of the given array.
/// This new matrix will be independent from the array.
/// A new memory block will be allocated for storing the matrix.
/// </summary>
public static SparseMatrix OfDiagonalArray(int rows, int columns, double[] diagonal)
{
var m = new SparseMatrix(rows, columns);
m.SetDiagonal(diagonal);
return m;
}