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Solution.h
2724 lines (2659 loc) · 103 KB
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Solution.h
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#pragma once
#include "lib.h"
#include "Node.h"
#include "Route.h"
class Solution {
public:
vector<int> giantT;// giant tour
vector<int> solT;// solution tour (contains index of clients)
vector<int> ordNodeLs; // using for LS
vector<Node*> nodes;// for nodes
vector<Route*> setR;// for set Route
vector<SeqData*> myseqs1;// for concatenation in LS
vector<SeqData*> myseqs2;// for concatenation in LS
vector<int>* lstNeig;// getting current list of neiborhood;
SeqData* seqSet;// init sequences for each node.
SeqData* seqDep;// only contain depot
//GA parts:
vector<int> predecessors; // store prev node of each client
vector<int> successors; // store next node of each client
multiset<pair<int, Solution*>> indivsPerProximity;
double biasedFitness; // Biased fitness of the solution
/*
* Variables for dealing with LS
*/
long long count[4][4];
int resGenInMoves[4][4];//using for general insert
III resSubFlex1[4][4];//using for flexible version
III resSubFlex2[4][4];//using for flexible version
vector<int> traceLoc[4][4];
vector<int> traceLoc1[4][4];
vector<int> traceLoc2[4][4];
vector<III> lstLabel; //((cost, time), loc)
vector<III> curLabel; //((cost, time), prv)
vector<int> prvIdLb; //previous label in vector
vector<int> tourLoc;
Node* nodeU;
Node* uPred;
Node* uSuc;
Node* nodeV;
Node* vPred;
Node* vSuc;
Route* routeU;
Route* routeV;
bool isFixed = false;// for identifying the type of LS;
Param* pr;
int cost;// objective
int n;// number of customer
int m;// number of vehicle (use when limit number of vehicle)
/*
* using when limiting the num of Veh
double** F;
int** pred;
*/
int* F;
int* pred;
Solution(Param* _pr) {
pr = _pr;
n = pr->numClient - 1;// not contain depot
if (pr->maxNeibor > n)pr->maxNeibor = n - 1;// deal with special case (exploring all neiborhood)
if (pr->numVeh != oo)m = pr->numVeh;
else m = n;
m++;//do for initialization
// create giant tour
for (int i = 0; i <= n; ++i) {
giantT.pb(0);//indexing from 1
ordNodeLs.push_back(i + 1);
}
ordNodeLs.pop_back();
//create node
/*
* indexing from 1
* each route contains 2 depot
*/
for (int i = 1; i <= n + 2 * m + 1; ++i)nodes.pb(new Node());
//for customer
for (int i = 1; i <= n; ++i) {
nodes[i]->idxClient = i;
nodes[i]->demand = pr->listCL[i].demand;
}
//for depot
for (int i = n + 1; i <= 2 * m + n; ++i) {
nodes[i]->idxClient = 0;
nodes[i]->demand = 0;
nodes[i]->idxLoc = 0;
}
//init neibor list:
solT.push_back(0);
set<DI> sDis;
for (int i = 1; i <= m + n; ++i) {
solT.push_back(0);
/*sDis.clear();
for (int j = 1; j <= m + n; ++j)if (i != j) {
sDis.insert(DI(pr->costs[nodes[i]->idxClient][nodes[j]->idxClient], j));
}
for (auto val : sDis) {
nodes[i]->moves.push_back(val.second);
}*/
}
solT.push_back(0);
for (int i = n + 1; i <= m + n; ++i) {
nodes[i]->pred = nodes[i + m];
nodes[i]->suc = nodes[i + m];
nodes[i + m]->suc = nodes[i];
nodes[i + m]->pred = nodes[i];
}
//for route
for (int i = 1; i <= m + 1; ++i)setR.pb(new Route(pr));
for (int i = 1; i <= m; ++i) {
setR[i]->depot = nodes[i + n];
}
//for split:
/* using when num of vehicles is limit.
F = new double* [m + 1];
pred = new int* [m + 1];
for (int k = 0; k <= m; ++k) {
F[k] = new double[n + 1];
pred[k] = new int[n + 1];
}
*/
//for LS
/*
* init seqdata for each node
*/
int maxSizeSeq = (pr->sizeSub * 2 + 4) * n + 2 * m * 4;
SeqData* myseqDatas = new SeqData[maxSizeSeq];
for (int i = 0; i < maxSizeSeq; ++i)myseqDatas[i].pr = _pr;
seqSet = myseqDatas;
int posSeq = 0;
//for client
for (int i = 1; i <= n; ++i) {
nodes[i]->seq0_i = &myseqDatas[posSeq];
nodes[i]->seqi_0 = &myseqDatas[posSeq + 1];
nodes[i]->seqi_n = &myseqDatas[posSeq + 2];
nodes[i]->seqn_i = &myseqDatas[posSeq + 3];
for (int j = 0; j < pr->sizeSub; ++j) {
nodes[i]->seqi_j.push_back(&myseqDatas[posSeq + 4 + j]);
}
for (int j = 0; j < pr->sizeSub; ++j) {
nodes[i]->seqj_i.push_back(&myseqDatas[posSeq + 4 + pr->sizeSub + j]);
}
posSeq += 4 + 2 * pr->sizeSub;
}
//for depot:
for (int i = n + 1; i <= 2 * m + n; ++i) {
nodes[i]->seq0_i = &myseqDatas[posSeq];
nodes[i]->seqi_0 = &myseqDatas[posSeq + 1];
nodes[i]->seqi_n = &myseqDatas[posSeq + 2];
nodes[i]->seqn_i = &myseqDatas[posSeq + 3];
posSeq += 4;
}
for (int i = 1; i <= m; ++i) {
setR[i]->updateRoute();
}
//only contain depot:
seqDep = new SeqData(_pr);
seqDep->init(0);
/*
* init set of moves for each node
* fixed and flexible version.
*/
for (int i = 1; i <= n; ++i) {
nodes[i]->idxLocMoves.resize(n + 1, false);
nodes[i]->movesLoc.resize(pr->maxNeibor);
nodes[i]->idxCluMoves.resize(n + 1, false);
nodes[i]->movesClu.resize(pr->maxNeibor);
}
indivsPerProximity.clear();
predecessors.resize(n + 1);
successors.resize(n + 1);
/*
* init for split
*/
F = new int[n + 1];
pred = new int[n + 1];
}
bool notDominatePop(II& label, II& labelA, II& labelB, II& labelC)
{
if (label.first >= labelA.first && label.second >= labelA.second)
if (label.first != labelA.first || label.second != labelA.second) return false;
if (label.first >= labelB.first && label.second >= labelB.second)
if (label.first != labelB.first || label.second != labelB.second) return false;
if (label.first >= labelC.first && label.second >= labelC.second)
if (label.first != labelC.first || label.second != labelC.second) return false;
return true;
}
bool notDominatePush(II& label, II& labelA, II& labelB, II& labelC)
{
if (label.first >= labelA.first && label.second >= labelA.second) return false;
if (label.first >= labelB.first && label.second >= labelB.second) return false;
if (label.first >= labelC.first && label.second >= labelC.second) return false;
return true;
}
void updateLabel(II label, II& labelA, II& labelB, II& labelC)
{
if (label.first <= labelA.first && label.second <= labelA.second) labelA = label;
if (label.first < labelB.first) labelB = label;
if (label.second < labelC.second) labelC = label;
}
void genGiantT() {
for (int i = 1; i <= n; ++i)giantT[i] = i;
shuffle(giantT.begin() + 1, giantT.end(), pr->Rng.generator);
//random_shuffle(giantT.begin() + 1, giantT.end());
}
/*diversity contribution in GA*/
void removeProximity(Solution* indiv)
{
auto it = indivsPerProximity.begin();
while (it->second != indiv) ++it;
indivsPerProximity.erase(it);
}
double brokenPairsDistance(Solution* valSol) {
int differences = 0;
for (int j = 1; j <= n; j++)
{
if (successors[j] != valSol->successors[j] && successors[j] != valSol->predecessors[j]) differences++;
if (predecessors[j] == 0 && valSol ->predecessors[j] != 0 && valSol->successors[j] != 0) differences++;
}
return (double)differences / (double)n;
}
double averageBrokenPairsDistanceClosest(int nbClosest) {
double result = 0;
int maxSize = min<int>(nbClosest, indivsPerProximity.size());
auto it = indivsPerProximity.begin();
for (int i = 0; i < maxSize; i++)
{
result += it->first;
++it;
}
return result / (double)maxSize;
}
/**/
void cvGiantT() {
int pos = 0;
for (int i = 1; i <= min(m + 1, n); ++i) {
Node* val = setR[i]->depot;
do
{
if (val->idxClient != 0)giantT[++pos] = val->idxClient;
val = val->suc;
} while (val != setR[i]->depot);
}
if (pr->isDebug) {
int* dd = new int[n + 1];
for (int i = 1; i <= n; ++i)dd[i] = 0;
for (int i = 1; i <= n; ++i)dd[giantT[i]] = 1;
for (int i = 1; i <= n; ++i)if (dd[i] == 0) {
throw "Wrong here 1";
}
if (pos != n) {
throw "Wrong here 2";
}
delete[] dd;
}
}
bool ckSol() {
if (pr->isDebug) {
pr->fl << cost << "\n";
cout << "Current Check\n";
}
vector<int> arrSol;
int* dd = new int[n + 1];
for (int i = 1; i <= n; ++i)dd[i] = 0;
int totalCost = 0;
for (int i = 1; i <= min(m + 1, n); ++i) {
if (pr->isDebug)setR[i]->showR();
Node* val = setR[i]->depot;
setR[i]->ckRoute();
while (true)
{
val = val->suc;
if (val->idxClient == 0)break;
dd[val->idxClient] = 1;
}
totalCost += setR[i]->depot->pred->seq0_i->cost;
}
for (int i = 1; i <= n; ++i)if (dd[i] == 0) {
throw "Wrong here";
}
if (!(totalCost == cost)) {
throw "error total cost";
}
delete[] dd;
}
//void cvSolT() {
// if (pr->isDebug) {
// cout << "status local search: " << endl;
// if (pr->m2Opt)cout << "2OPT\n";
// if (pr->crosver)cout << "CrossOver\n";
// if (pr->swap2)cout << "Swap2Node\n";
// if (pr->stringex)cout << "StringExchange\n";
// cout << endl;
// }
// int pos = 0;
// double testCost = 0.0;
// double testE = 0.0;
// if (pr->debugLS) {
// testCost = 0.0;
// testE = 0.0;
// for (int i = 1; i <= m; ++i) {
// testCost += setR[i]->caculateDis();
// testE = setR[i]->calEInRan(0, setR[i]->length);
// if (testE > pr->maxE) {
// cout << testE << endl;
// throw "Wrong here";
// }
// }
// if (abs(testCost - cost) >= EP) {
// throw "Wrong here";
// }
// }
// if (pr->isDebug) {
// testCost = 0.0;
// testE = 0.0;
// cout << "solution tour:\n";
// for (auto val : solT) cout << val << " ";
// cout << endl;
// cout << endl;
// cout << "detail route: \n";
// for (int i = 1; i <= m; ++i) {
// setR[i]->updateRoute();
// if (pr->isDebug) {
// setR[i]->showR();
// setR[i]->showR_rev();
// }
// testCost += setR[i]->caculateDis();
// testE = setR[i]->calEInRan(0, setR[i]->length);
// if (pr->isDebug) cout << testE << endl;
// if (testE > pr->maxE) {
// //cout << testE << endl;
// throw "Wrong here";
// }
// //setR[i]->showR_rev();
// }
//
// if (testCost - cost >= EP) {
// if (pr->isDebug) {
// //cout << testE << endl;
// cout << testCost << " "<< cost<<endl;
// }
// throw "Wrong here";
// }
// }
// for (int i = 1; i <= m; ++i) {
// solT[++pos] = i + n;
// Node* val = nodes[i + n];
// nodes[i + n]->posInSol = pos;
// do {
// val = val->suc;
// if (val->idxClient == 0)break;
// solT[++pos] = val->idxClient;
// val->posInSol = pos;
// } while (1);
// }
// //debug:
// if (pr->debugLS) {
// if (!ckSolT()) {
// throw "Wrong here";
// }
// }
// if (pr->isDebug) {
// cout << "after transfer: \n";
// for (auto val : solT)cout << val << " ";
// cout << "\n\n";
// if (!ckSolT()) {
// throw "Wrong here";
// }
// }
// if (pos != m + n) {
// /*for (auto val : giantT)cout << val << ", ";
// exit(0);*/
// throw "Wrong size";
// }
// solT[0] = solT[m + n];
// solT[m + n + 1] = solT[1];
//}
//reset all moves in route r
void reinitSingleMoveInRou(Route* r) {
for (int i = 1; i <= n; ++i)r->isNodeTested[i] = false;
for (Node* tempNode = r->depot->suc; tempNode->idxClient != 0; tempNode = tempNode->suc) {
for (int i = 1; i <= min(m + 1, n); ++i)setR[i]->isNodeTested[tempNode->idxClient] = false;
}
}
//reset all moves on all routes
void reinitAllMovesInRou() {
for (int i = 1; i <= min(m + 1, n); ++i) {
for (int j = 1; j <= n; ++j)setR[i]->isNodeTested[j] = false;
}
}
//marked that node had tested on all routes:
void markNodeTested(Node* nod) {
for (int i = 1; i <= min(m + 1, n); ++i)setR[i]->isNodeTested[nod->idxClient] = true;
}
//reset neigborhood cluster set (run when changing location)
void reinitCluSet(Node* nod) {
for (auto val : nod->movesClu) {
nod->idxCluMoves[val] = false;
}
nod->movesClu = nod->rou->pr->listLoc[nod->idxLoc].moves;
for (auto val : nod->movesClu) {
nod->idxCluMoves[val] = true;
}
}
//reset neigborhood set for each node
void reinitNegiborSet(bool isConClu = true) {
set<II> sDis;
int u, v;
for (int i = 1; i <= n; ++i) {
u = nodes[i]->idxLoc;
//cluster set:
if (isConClu)reinitCluSet(nodes[i]);
//location set:
/// (can update on the fly by using data structure set but trading off when processing)
//reset all existing index
for (auto val : nodes[i]->movesLoc) {
nodes[i]->idxLocMoves[pr->listLoc[val].idxClient] = false;
}
//checking based on the corelation measure:
sDis.clear();
for (int j = 1; j <= n; ++j) if (j != i) {
v = nodes[j]->idxLoc;
sDis.insert(II(pr->corDis[v][u], v));
}
//adding new index:
nodes[i]->movesLoc.clear();
for (auto val : sDis) {
if (val.first >= oo)continue;
nodes[i]->movesLoc.push_back(pr->listLoc[val.sc].idxClient);
nodes[i]->idxLocMoves[nodes[i]->movesLoc.back()] = true;
if (nodes[i]->movesLoc.size() == pr->maxNeibor)break;
}
}
}
// split without limit number of vehicles
void Split() {
/*
* (cost, time)
* idx of location
*/
if (pr->isDebug)cout << m << "\n";
if (m != pr->numVeh + 1 && m != n + 1) {
//rerun split
//clear all route:
for (int i = 1; i <= m; ++i) {
setR[i]->clearNode();
setR[i]->updateRoute();
}
reinitAllMovesInRou();
}
else m--;
/*vector<III> lstLabel; //((cost, time), loc)
vector<III> curLabel; //((cost, time), prv)
vector<int> prvIdLb; //previous label in vector*/
lstLabel.clear();
curLabel.clear();
prvIdLb.clear();
//the index that cannot exceed in a route due to the capacity.
int* maxIdx = new int[n + 1];
int curLoad = 0;
maxIdx[0] = 0;
for (int i = 1; i <= n; ++i) {
maxIdx[i] = max(maxIdx[i - 1], i);
int prvIdx = giantT[i - 1];
curLoad -= pr->listCL[prvIdx].demand;
if (maxIdx[i - 1] < i)curLoad = pr->listCL[giantT[i]].demand;
if (maxIdx[i - 1] == n) {
maxIdx[i] = n;
continue;
}
for (int j = max(i + 1, maxIdx[i - 1] + 1); j <= n; ++j) {
if (curLoad + pr->listCL[giantT[j]].demand <= pr->Q) {
curLoad += pr->listCL[giantT[j]].demand;
maxIdx[i] = j;
}
else {
break;
}
}
}
//init split phase:
for (int i = 1; i <= n; ++i) {
F[i] = oo;
pred[i] = -1;
}
F[0] = 0;
pred[0] = -1;
int stLb = -1, enLb = -1;
III lbU, lbV;
II label1, label2, label3;
int idCus, costU, timeU, idLocU;
int timeV, costV;
for (int st = 1; st <= n; st++) {
//init first label:
lstLabel.pb(III(II(0, 0), 0));
prvIdLb.pb(pred[st - 1]);
stLb = lstLabel.size() - 1;
enLb = lstLabel.size() - 1;
for (int v = st; v <= maxIdx[st]; ++v) {
int idCus = giantT[v];
for (auto idLocV : pr->listCL[idCus].listLoc) {
label1 = II(oo, oo);
label2 = II(oo, 0);
label3 = II(0, oo);
curLabel.clear();
if (pr->costs[0][idLocV] == oo) {//eliminated node:
continue;
}
//construct label of next layer
for (int i = stLb; i <= enLb; ++i) {
III lbU = lstLabel[i];
costU = lbU.ft.ft;
timeU = lbU.ft.sc;
idLocU = lbU.sc;
timeV = max(timeU + pr->times[idLocU][idLocV], pr->listLoc[idLocV].stTime);
if (timeV > pr->listLoc[idLocV].enTime
|| timeV + pr->times[idLocV][0] > pr->T // only true when travel times satisfy triangle inequality
) {
continue;
}
costV = costU + pr->costs[idLocU][idLocV];
lbV = III(II(costV, timeV), i);
if (notDominatePush(lbV.first, label1, label2, label3)) {
updateLabel(lbV.first, label1, label2, label3);
curLabel.pb(lbV);
}
}
//dominate label
sort(curLabel.begin(), curLabel.end());
int minT = oo;
//for (auto val : curLabel) {
for (int i = 0; i < curLabel.size(); ++i) {
III val = curLabel[i];
if (val.ft.sc < minT)
{
minT = val.ft.sc;
lstLabel.pb(III(val.ft, idLocV));
prvIdLb.pb(val.sc);
//update F function
if (//val.ft.sc + pr->times[idLocV][0] <= pr->T&& // uncomment when travel times does not satisfy triangle inequality
F[v] > val.ft.ft + pr->costs[idLocV][0] + F[st - 1]) {
F[v] = val.ft.ft + pr->costs[idLocV][0] + F[st - 1];
pred[v] = lstLabel.size() - 1;
}
}
}
}
stLb = enLb + 1;
enLb = lstLabel.size() - 1;
if (stLb > enLb)break;
}
}
cost = F[n];
if (cost == oo) {
delete[] maxIdx;
return;
}
int indexLb = pred[n];// index of last label.
///construct solution
//vector<int> tourLoc;
tourLoc.clear();
int numVeh = 0;
while (indexLb != -1)
{
tourLoc.pb(lstLabel[indexLb].second);
if (lstLabel[indexLb].second == 0)numVeh++;
indexLb = prvIdLb[indexLb];
}
m = numVeh;
if (!(tourLoc.size() == m + n)) {
throw "split bug loc size";
}
reverse(tourLoc.begin(), tourLoc.end());
numVeh = 0;
for (auto val : tourLoc) {
if (val == 0) {
numVeh++;
}
else {
idCus = pr->listLoc[val].idxClient;
nodes[idCus]->idxClient = idCus;
nodes[idCus]->idxLoc = val;
setR[numVeh]->insertToRou(nodes[idCus]);
}
}
for (int i = 1; i <= min(m + 1, n); ++i) {
setR[i]->updateRoute();
//setR[i]->showR();
}
reinitNegiborSet();
for (int i = 1; i <= n; ++i) {
predecessors[i] = nodes[i]->pred->idxClient;
successors[i] = nodes[i]->suc->idxClient;
}
if (pr->isTurnCkSol) {
try {
ckSol();
}
catch (const char* msg) {
cerr << msg << endl;
for (int i = 1; i <= n; ++i)pr->fileOut << giantT[i] << ", ";
pr->fileOut << "\n";
for (auto val : ordNodeLs)pr->fileOut << val << ", ";
pr->fileOut.close();
system("pause");
exit(0);
}
}
//cvSolT(); // uncomment when need tracking the specific postion in solution (used in sequential search)
delete[] maxIdx;
}
void initSol() {
vector<DD> points(n + 1);
set<DI> setAng;
setAng.clear();
points[0] = DD(pr->listLoc[0].x, pr->listLoc[0].y);
double avgX, avgY;
for (int i = 1; i <= n; ++i) {
avgX = 0.0;
avgY = 0.0;
for (auto val : pr->listCL[i].listLoc) {
avgX += pr->listLoc[val].x;
avgY += pr->listLoc[val].y;
}
avgX /= pr->listCL[i].listLoc.size();
avgY /= pr->listCL[i].listLoc.size();
//caculate angle with depot:
setAng.insert(DI(atan2(avgY - points[0].sc, avgX - points[0].ft), i));
}
int idPos = 0;
for (auto val : setAng) {
giantT[++idPos] = val.sc;
}
if (idPos != n) {
throw "error init";
}
Split();
cout << "initial cost: " << cost << "\n";
setAng.clear();
points.clear();
}
///Local Search:
/// isFixed = true if running fixed version LS
/// Otherwise if running flexible version LS
///
///
// insert node u after node v
void insertNode(Node* u, Node* v)
{
if (u->pred != v && u != v)
{
u->pred->suc = u->suc;
u->suc->pred = u->pred;
v->suc->pred = u;
u->pred = v;
u->suc = v->suc;
v->suc = u;
u->rou = v->rou;
}
}
bool isCorrelated(Node* u, Node* v) {
return true;
if (u->idxClient == 0 || v->idxClient == 0)return true;
if (isFixed)return v->idxLocMoves[u->idxClient];
else return v->idxCluMoves[u->idxClient];
}
void updateObjInter() {
//shuffle the moves:
shuffle(ordNodeLs.begin(), ordNodeLs.end(), pr->Rng.generator);
/*for (int i = 1; i <= n; ++i) {
shuffle(nodes[i]->movesClu.begin(), nodes[i]->movesClu.end(), pr->Rng.generator);
shuffle(nodes[i]->movesLoc.begin(), nodes[i]->movesLoc.end(), pr->Rng.generator);
}*/
//reset all moves on route:
reinitAllMovesInRou();
//checking move:
int isMoved = 0;
bool isMetEmpRou = false;
bool isEndSearch = false;
Node* tempNode;
while (!isEndSearch)
{
isEndSearch = true;
isMoved = 0;
for (int posU = 0; posU < ordNodeLs.size(); ++posU) {
//cout << "posU: " << posU << " " << isMoved << "\n";
posU -= isMoved;
isMoved = 0;
isMetEmpRou = false;
nodeU = nodes[ordNodeLs[posU]];
routeU = nodeU->rou;
uSuc = nodeU->suc;
uPred = nodeU->pred;
if (isFixed)lstNeig = &nodeU->movesLoc;
else lstNeig = &nodeU->movesClu;
for (int posV = 0; posV < lstNeig->size() && isMoved == 0; ++posV) {
nodeV = nodes[lstNeig->at(posV)];
routeV = nodeV->rou;
if (nodeV->rou->isNodeTested[nodeU->idxClient])continue;
vPred = nodeV->pred;
vSuc = nodeV->suc;
if (routeU != routeV) {
//apply inter general insert:
if (isMoved != 1) {
tempNode = nodeV;
nodeV = nodeV->suc;
vSuc = nodeV->suc;
vPred = nodeV->pred;
isMoved = interRouteGeneralInsert();
nodeV = tempNode;
vSuc = nodeV->suc;
vPred = nodeV->pred;
}
//2-Opt*
if (isMoved != 1) {
isMoved = interRoute2Opt();
}
//2-Opt* Inverse
if (isMoved != 1) {
isMoved = interRoute2OptInv();
}
}
else /*if (isFixed)*/ {
//intra route general insert (only consider with fixed version):
//isFixed = true;
tempNode = nodeV;
nodeV = nodeV->suc;
vSuc = nodeV->suc;
vPred = nodeV->pred;
int old_cost = cost;
if (isMoved != 1) {
isMoved = intraRouteGeneralInsert();
}
//isFixed = false;
nodeV = tempNode;
routeV = nodeV->rou;
vSuc = nodeV->suc;
vPred = nodeV->pred;
}
}
//intra route 2Opt:
//cout << "status " << isMoved << "\n";
nodeV = nodeU->suc;
routeV = nodeV->rou;
if (!routeV->isNodeTested[nodeU->idxClient]) {
//isFixed = true;
while (isMoved != 1 && nodeV->idxClient)
{
vPred = nodeV->pred;
vSuc = nodeV->suc;
if (isCorrelated(uPred, nodeV) || isCorrelated(nodeU, vSuc))
isMoved = intraRoute2Opt();
nodeV = nodeV->suc;
}
//isFixed = false;
}
// Special cases : testing the insertions behind the depot, and the empty routes
//cout << "status " << isMoved << "\n";
for (int idRou = 1; idRou <= min(m + 1, n) && isMoved == 0; ++idRou) {
nodeV = setR[idRou]->depot;
routeV = nodeV->rou;
vSuc = nodeV->suc;
vPred = nodeV->pred;
if (routeV->isNodeTested[nodeU->idxClient])continue;
if (isMetEmpRou && vSuc->idxClient == 0)continue;
if (vSuc->idxClient == 0)isMetEmpRou = true;
if (routeU != routeV) {
//apply inter general insert:
if (isMoved != 1) {
tempNode = nodeV;
nodeV = nodeV->suc;
vSuc = nodeV->suc;
vPred = nodeV->pred;
isMoved = interRouteGeneralInsert();
nodeV = tempNode;
vSuc = nodeV->suc;
vPred = nodeV->pred;
}
//2-Opt*
if (isMoved != 1) {
isMoved = interRoute2Opt();
}
//2-Opt* Inverse
if (isMoved != 1) {
isMoved = interRoute2OptInv();
}
}
else /*if (isFixed)*/ {
//intra route general insert (only consider with fixed version):
//isFixed = true;
tempNode = nodeV;
nodeV = nodeV->suc;
vSuc = nodeV->suc;
vPred = nodeV->pred;
if (isMoved != 1) {
isMoved = intraRouteGeneralInsert();
}
//isFixed = false;
nodeV = tempNode;
routeV = nodeV->rou;
vSuc = nodeV->suc;
vPred = nodeV->pred;
}
if (isMoved != 0 && idRou == m + 1) {
m++;
}
}
//cout << "status " << isMoved << "\n";
if (isMoved == 0) {
markNodeTested(nodeU);
}
else {
isEndSearch = false;
}
}
}
}
//flexSeq must have larger than 2 sequences
//with flexible version, it will change locations of the last node of first sequence and first node of last sequence .
III evalFlex(vector<SeqData*> flexSeq) {
III res = III(II(-1, -1), oo);// (location of 2 changed node and result)
SeqData* firstE = flexSeq.front();
SeqData* lastE = flexSeq.back();
int cliFirst = pr->listLoc[firstE->lastnode].idxClient;
int cliBe;
if (firstE->beforeLaNode != -1)cliBe = pr->listLoc[firstE->beforeLaNode].idxClient;
int cliLast = pr->listLoc[lastE->firstnode].idxClient;
int cliAf;
if (lastE->afterFiNode != -1)cliAf = pr->listLoc[lastE->afterFiNode].idxClient;
int valCli;
SeqData* seqLocU = new SeqData(pr);
SeqData* seqLocV = new SeqData(pr);
SeqData* seqTempU = seqLocU;
SeqData* seqTempV = seqLocV;
int ckRes;
for (auto locU : pr->listCL[cliFirst].listLoc) {
if (locU == 0) {
seqLocU = seqDep;
}
else {
if (cliBe == 0)seqLocU->concatOneAfter(seqDep, locU);
else if (nodes[cliFirst]->pred == nodes[cliBe]) seqLocU->concatOneAfter(nodes[cliBe]->seq0_i, locU);
else seqLocU->concatOneAfter(nodes[cliBe]->seqn_i, locU);
}
if (!seqLocU->F)continue;
//flexSeq[0] = seqLocU;
for (auto locV : pr->listCL[cliLast].listLoc) {
if (locV == 0) {
seqLocV = seqDep;
}
else {
if (cliAf == 0)seqLocV->concatOneBefore(seqDep, locV);
else if (nodes[cliLast]->suc == nodes[cliAf])seqLocV->concatOneBefore(nodes[cliAf]->seqi_n, locV);
else seqLocV->concatOneBefore(nodes[cliAf]->seqi_0, locV);
}
if (!seqLocV->F)continue;
flexSeq.front() = seqLocU;
flexSeq.back() = seqLocV;
ckRes = seqDep->evaluation(flexSeq);
if (ckRes < res.sc) {
res.sc = ckRes;
res.ft = II(locU, locV);
}
}
}
delete seqTempU;
delete seqTempV;
return res;
}
int evalSpecFlex(vector<SeqData*>& flexSeq, vector<int>& trace) {
int* virGiantT = new int[6];
int curNum = 0;
int totalLoad = 0;
assert(flexSeq.size() == 2 || flexSeq.size() == 3);
SeqData* firstE = flexSeq.front();
SeqData* lastE = flexSeq.back();
int cliFirst = pr->listLoc[firstE->lastnode].idxClient;
int cliBe = -1;
if (firstE->beforeLaNode != -1)cliBe = pr->listLoc[firstE->beforeLaNode].idxClient;
int cliLast = pr->listLoc[lastE->firstnode].idxClient;
int cliAf = -1;
if (lastE->afterFiNode != -1)cliAf = pr->listLoc[lastE->afterFiNode].idxClient;
//init giant tour:
if (cliBe != -1)virGiantT[++curNum] = cliFirst;
else cliBe = cliFirst;
if (flexSeq.size() == 3) {
virGiantT[++curNum] = pr->listLoc[flexSeq[1]->firstnode].idxClient;
if (flexSeq[1]->firstnode != flexSeq[1]->lastnode) {
virGiantT[++curNum] = pr->listLoc[flexSeq[1]->lastnode].idxClient;
}
}
if (cliAf != -1)virGiantT[++curNum] = cliLast;
else cliAf = cliLast;
if (curNum == 0) {
delete[] virGiantT;
return 0;
}
//find min:
int stT = 0, enT = pr->T;
int resCost = 0;
if (cliBe) {
if (nodes[cliFirst]->pred == nodes[cliBe]) {
resCost += nodes[cliBe]->seq0_i->cost;
stT = nodes[cliBe]->seq0_i->E;
totalLoad += nodes[cliBe]->seq0_i->load;
}
else {
resCost += nodes[cliBe]->seqn_i->cost;
stT = nodes[cliBe]->seqn_i->E;
totalLoad += nodes[cliBe]->seqn_i->load;
}
cliBe = nodes[cliBe]->idxLoc;
}
if (cliAf) {
if (nodes[cliLast]->suc == nodes[cliAf]) {
resCost += nodes[cliAf]->seqi_n->cost;
enT = nodes[cliAf]->seqi_n->L;
totalLoad += nodes[cliAf]->seqi_n->load;
}
else {
resCost += nodes[cliAf]->seqi_0->cost;
enT = nodes[cliAf]->seqi_0->L;
totalLoad += nodes[cliAf]->seqi_0->load;
}
cliAf = nodes[cliAf]->idxLoc;
}
lstLabel.clear();
curLabel.clear();
prvIdLb.clear();
for (int i = 1; i <= curNum; ++i) {
F[i] = oo;
pred[i] = -1;
totalLoad += pr->listCL[virGiantT[i]].demand;
}
if (totalLoad > pr->Q) {
delete[] virGiantT;
return oo;
}
F[0] = oo;
pred[0] = -1;
int stLb = -1, enLb = -1;
III lbU, lbV;
II label1, label2, label3;
int idCus, costU, timeU, idLocU;
int timeV, costV;
int st = 1;
//init first label:
lstLabel.pb(III(II(0, stT), cliBe));
prvIdLb.pb(pred[st - 1]);
stLb = lstLabel.size() - 1;
enLb = lstLabel.size() - 1;
for (int v = st; v <= curNum; ++v) {
int idCus = virGiantT[v];
for (auto idLocV : pr->listCL[idCus].listLoc) {
label1 = II(oo, oo);
label2 = II(oo, 0);
label3 = II(0, oo);
curLabel.clear();
if (pr->costs[0][idLocV] == oo) {//eliminated node:
continue;
}
//construct label of next layer
for (int i = stLb; i <= enLb; ++i) {
III lbU = lstLabel[i];
costU = lbU.ft.ft;
timeU = lbU.ft.sc;
idLocU = lbU.sc;