/// <param name="minI">
/// </param>
/// <param name="minJ">
/// </param>
/// <param name="prevUMinI">
/// </param>
/// <param name="prevVMinJ">
/// </param>
/// <param name="headU">
/// </param>
private void addBasicVariable(int minI, int minJ, double[] s, double[] d, Node1Content prevUMinI, Node1Content prevVMinJ, Node1Content headU)
{
// TODO Auto-generated method stub
double t;
//passaggi per associare i nuovi valori agli array s e d
if (System.Math.Abs(s[minI] - d[minJ]) <= EPSILON * maxW)
{
t = s[minI];
s[minI] = 0;
d[minJ] = d[minJ] - t;
}
else
{
if (s[minI] < d[minJ])
{
t = s[minI];
s[minI] = 0;
d[minJ] = d[minJ] - t;
}
else
{
t = d[minJ];
d[minJ] = 0;
s[minI] = s[minI] - t;
}
}
isX[minI][minJ] = 1;
endx.Val = t;
endx.I = minI;
endx.J = minJ;
endx.NC = rowsX[minI];
endx.NR = colsX[minJ];
rowsX[minI] = endx;
colsX[minJ] = endx;
endx = X[endx.Pos + 1];
if ((s[minI] == 0) && (headU.getNext().getNext().IsLast != true))
{
prevUMinI.setNext(prevUMinI.getNext().getNext());
}
else
{
prevVMinJ.setNext(prevVMinJ.getNext().getNext());
}
}
/// <param name="S">
/// </param>
/// <param name="D">
/// </param>
private void russel(double[] S, double[] D)
{
int i, j, found, minI = 0, minJ = 0;
int lastCurU, lastCurV;
double deltaMin, oldVal, diff;
var delta = new double[n1][];
for (var i2 = 0; i2 < n1; i2++)
{
delta[i2] = new double[n2];
}
Node1Content[] ur, vr;
Node1Content n1c, prevU, prevV, curU, curV, headU = new Node1Content(), headV = new Node1Content(), remember = null, prevUMinI = null, prevVMinJ = null;
ur = new Node1Content[MAX_SIG_SIZE1];
for (i = 0; i < ur.Length; i++)
{
ur[i] = new Node1Content();
ur[i].Pos = i;
}
headU.setNext(ur[0]);
curU = ur[0];
for (i = 0; i < n1; i++)
{
curU.I = i;
curU.Val = - INFINITY;
curU.setNext(ur[curU.Pos + 1]);
curU = ur[curU.Pos + 1];
}
curU.LastNode = true;
vr = new Node1Content[MAX_SIG_SIZE1];
for (i = 0; i < vr.Length; i++)
{
vr[i] = new Node1Content();
vr[i].Pos = i;
}
headV.setNext(vr[0]);
curV = vr[0];
for (j = 0; j < n2; j++)
{
curV.I = j;
curV.Val = - INFINITY;
curV.setNext(vr[curV.Pos + 1]);
curV = vr[curV.Pos + 1];
}
curV.LastNode = true;
for (i = 0; i < n1; i++)
{
for (j = 0; j < n2; j++)
{
float v;
v = costMatrix[i][j];
if (ur[i].Val <= v)
ur[i].Val = v;
if (vr[j].Val <= v)
vr[j].Val = v;
}
}
// vr[n2].setLastNode(true);
// ur[n1].setLastNode(true);
for (i = 0; i < n1; i++)
{
for (j = 0; j < n2; j++)
{
delta[i][j] = costMatrix[i][j] - ur[i].Val - vr[j].Val;
}
}
do
{
found = 0;
deltaMin = INFINITY;
prevU = headU;
for (curU = headU.getNext(); curU.IsLast != true; curU = curU.getNext())
{
int u;
u = curU.I;
prevV = headV;
for (curV = headV.getNext(); curV.IsLast != true; curV = curV.getNext())
{
var v = curV.I;
if (deltaMin > delta[u][v])
{
deltaMin = delta[u][v];
minI = u;
minJ = v;
prevUMinI = prevU;
prevVMinJ = prevV;
found = 1;
}
prevV = curV;
}
prevU = curU;
}
if (found == 0)
{
break;
}
remember = prevUMinI.getNext();
addBasicVariable(minI, minJ, s, d, prevUMinI, prevVMinJ, headU);
if (remember.Equals(prevUMinI.getNext()))
{
for (curV = headV.getNext(); curV.IsLast == false; curV = curV.getNext())
{
var v = curV.I;
if (curV.Val == costMatrix[minI][v])
{
oldVal = curV.Val;
curV.Val = - INFINITY;
for (curU = headU.getNext(); curU.IsLast == false; curU = curU.getNext())
{
var u = curU.I;
if (curV.Val <= costMatrix[u][v])
{
curU.Val = costMatrix[u][v];
}
}
diff = oldVal - curV.Val;
if (System.Math.Abs(diff) < EPSILON * maxC)
{
for (curU = headU.getNext(); curU.IsLast; curU = curU.getNext())
{
delta[curU.I][v] = delta[curU.I][v] + diff;
}
}
}
}
}
else
{
for (curU = headU.getNext(); curU.IsLast == false; curU = curU.getNext())
{
var u = curU.I;
if (curU.Val == costMatrix[u][minJ])
{
oldVal = curU.Val;
curU.Val = - INFINITY;
for (curV = headV.getNext(); curV.IsLast == false; curV = curV.getNext())
{
var v = curV.I;
if (curU.Val <= costMatrix[u][v])
{
curU.Val = costMatrix[u][v];
}
}
diff = oldVal - curU.Val;
if (System.Math.Abs(diff) < EPSILON * maxC)
{
for (curV = headV.getNext(); curV.IsLast == false; curV = curV.getNext())
{
delta[u][curV.I] = delta[u][curV.I] + diff;
}
}
}
}
}
}
while (headU.getNext().IsLast == false || headV.getNext().IsLast == false);
// System.out.println("###############");
// for (int st1=0;st1<n1;st1++){
// for (int st2=0;st2<n2;st2++){
// System.out.print(isX[st1][st2]);
// System.out.print(" ");}
// System.out.println();}
}
/// <param name="U">
/// </param>
/// <param name="V">
/// </param>
/// <throws> FindBasicVariablesException </throws>
private void findBasicVariables(Node1Content[] U, Node1Content[] V)
{
int i, j, found;
int uFoundNum, vFoundNum;
Node1Content nodenull, prevU, prevV, curU, curV, u1head, v1head = new Node1Content(), u0head = new Node1Content(), v0head = new Node1Content();
//
// System.out.println("###############");
// for (int st1=0;st1<n1;st1++){
// for (int st2=0;st2<n2;st2++){
// System.out.print(isX[st1][st2]);
// System.out.print(" ");}
// System.out.println();}
u0head.setNext(U[0]);
curU = U[0];
for (i = 0; i < n1; i++)
{
curU.I = i;
curU.setNext(U[curU.Pos + 1]);
curU = U[curU.Pos + 1];
}
curU.LastNode = true;
nodenull = new Node1Content();
nodenull.LastNode = true;
u1head = new Node1Content();
u1head.setNext(nodenull);
curV = V[1];
v0head.setNext(n2 > 1?V[1]:nodenull);
for (j = 1; j < n2; j++)
{
curV.I = j;
curV.setNext(V[curV.Pos + 1]);
curV = V[curV.Pos + 1];
}
curV.LastNode = true;
v1head.setNext(nodenull);
V[0].I = 0;
V[0].Val = 0;
v1head.setNext(V[0]);
v1head.getNext().setNext(nodenull);
uFoundNum = 0;
vFoundNum = 0;
while (uFoundNum < n1 || vFoundNum < n2)
{
found = 0;
if (vFoundNum < n2)
{
prevV = v1head;
for (curV = v1head.getNext(); curV.IsLast != true; curV = curV.getNext())
{
j = curV.I;
prevU = u0head;
for (curU = u0head.getNext(); curU.IsLast != true; curU = curU.getNext())
{
i = curU.I;
if (isX[i][j] == 1)
{
curU.Val = costMatrix[i][j] - curV.Val;
prevU.setNext(curU.getNext());
curU.setNext(u1head.getNext().IsLast != true?u1head.getNext():nodenull);
u1head.setNext(curU);
curU = prevU;
}
else
{
prevU = curU;
}
}
prevV.setNext(curV.getNext());
vFoundNum = vFoundNum + 1;
found = 1;
}
}
if (uFoundNum < n1)
{
prevU = u1head;
for (curU = u1head.getNext(); curU.IsLast != true; curU = curU.getNext())
{
i = curU.I;
prevV = v0head;
for (curV = v0head.getNext(); curV.IsLast != true; curV = curV.getNext())
{
j = curV.I;
if (isX[i][j] == 1)
{
curV.Val = costMatrix[i][j] - curU.Val;
prevV.setNext(curV.getNext());
curV.setNext(v1head.getNext().IsLast != true?v1head.getNext():nodenull);
v1head.setNext(curV);
curV = prevV;
}
else
{
prevV = curV;
}
}
prevU.setNext(curU.getNext());
uFoundNum = uFoundNum + 1;
found = 1;
}
}
if (found == 0)
{
throw new FindBasicVariablesException();
}
}
}
/// <param name="s1">
/// </param>
/// <param name="s2">
/// </param>
/// <returns>
/// </returns>
/// <throws> SignatureSizeException </throws>
/// <throws> FindBasicVariablesException </throws>
/// <throws> IsOptimalException </throws>
/// <throws> FindLoopException </throws>
public virtual float Emd(Signature signature1, Signature signature2,
double[][] costMatrix, Flow flow, int flowSize, List<Flow> flowList)
{
#region Pre-Execution checks
if (signature1.N != costMatrix.Length || signature2.N != costMatrix[0].Length)
{
throw new ArgumentException("The costMatrix is not compatible with the two signature!");
}
#endregion
int itr;
double totalCost;
double w;
Node2Content xp;
Flow[] flowP;
Flow flowp;
Node1Content[] U, V;
// var flowList= new List<flow_t>();
U = new Node1Content[MAX_SIG_SIZE1];
for (var i = 0; i < U.Length; i++)
{
U[i] = new Node1Content();
U[i].Pos = i;
}
V = new Node1Content[MAX_SIG_SIZE1];
for (var i = 0; i < V.Length; i++)
{
V[i] = new Node1Content();
V[i].Pos = i;
}
flowP = new Flow[MAX_SIG_SIZE1];
for (var i = 0; i < flowP.Length; i++)
{
flowP[i] = new Flow();
flowP[i].Pos = i;
}
w = init(signature1, signature2, costMatrix);
if (n1 > 1 && n2 > 1)
/* IF _n1 = 1 OR _n2 = 1 THEN WE ARE DONE */
{
for (itr = 1; itr < MAX_ITERATIONS; itr++)
{
// System.out.println("EMD");
/* FIND BASIC VARIABLES */
findBasicVariables(U, V);
// /* CHECK FOR OPTIMALITY */
if (isOptimal(U, V))
break;
//
// /* IMPROVE SOLUTION */
newSol();
}
}
totalCost = 0;
if (flow != null)
{
flowP[0] = flow;
}
flowp = flowP[0];
for (xp = X[0]; xp.Pos < endx.Pos; xp = X[xp.Pos + 1])
{
if (xp.Equals(enterX))
{
continue;
}
if (xp.I == signature1.N || xp.J == signature2.N)
{
continue;
}
if (xp.Val == 0)
{
continue;
}
totalCost = totalCost + xp.Val * costMatrix[xp.I][xp.J];
if (flow != null)
{
// my code
var flowTemp = new Flow();
flowTemp.From = xp.I;
flowTemp.To = xp.J;
flowTemp.Amount = xp.Val;
flowTemp = flowP[flowp.Pos + 1];
flowList.Add(flowTemp);
// end of my code
flowp.From = xp.I;
flowp.To = xp.J;
flowp.Amount = xp.Val;
flowp = flowP[flowp.Pos + 1];
}
}
// if(flow != null){
// flowSize=flowp.getPos() - flow.getPos();
// }
//UPGRADE_WARNING: Data types in Visual C# might be different. Verify the accuracy of narrowing conversions. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1042'"
return (float) (totalCost / w);
}
/// <param name="u">
/// </param>
/// <param name="v">
/// </param>
/// <returns>
/// </returns>
/// <throws> IsOptimalException </throws>
private bool isOptimal(Node1Content[] u, Node1Content[] v)
{
double delta, deltaMin;
int i, j, minI = 0, minJ = 0;
deltaMin = INFINITY;
for (i = 0; i < n1; i++)
{
for (j = 0; j < n2; j++)
{
if (isX[i][j] == 0)
{
delta = costMatrix[i][j] - u[i].Val - v[j].Val;
if (deltaMin > delta)
{
deltaMin = delta;
minI = i;
minJ = j;
}
}
}
}
if (deltaMin == INFINITY)
{
throw new IsOptimalException();
}
enterX.I = minI;
enterX.J = minJ;
return (deltaMin >= (- EPSILON) * maxC);
}