1 | /* |
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2 | Authors |
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3 | |
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4 | Jeremy Omer, Mehdi Towhidi |
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5 | |
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6 | Last update: april 10, 2015 |
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7 | |
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8 | */ |
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9 | |
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10 | #ifndef ClpPEPrimalColumnDantzig_H |
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11 | #define ClpPEPrimalColumnDantzig_H |
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12 | |
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13 | #include "ClpPrimalColumnDantzig.hpp" |
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14 | #include "ClpPrimalColumnPivot.hpp" |
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15 | #include "ClpSimplex.hpp" |
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16 | #include "CoinIndexedVector.hpp" |
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17 | #include "ClpFactorization.hpp" |
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18 | #include "ClpNonLinearCost.hpp" |
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19 | #include "ClpSimplexPrimal.hpp" |
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20 | #include "ClpPackedMatrix.hpp" |
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21 | #include "ClpPESimplex.hpp" |
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22 | |
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23 | class ClpPEPrimalColumnDantzig : public ClpPrimalColumnDantzig { |
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24 | |
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25 | public: |
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26 | /** constructors */ |
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27 | ClpPEPrimalColumnDantzig(double psi = 0.5); |
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28 | ClpPEPrimalColumnDantzig(const ClpPEPrimalColumnDantzig &); //copy constructor |
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29 | |
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30 | /** destructor */ |
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31 | ~ClpPEPrimalColumnDantzig(); |
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32 | |
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33 | /** assignment operator */ |
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34 | ClpPEPrimalColumnDantzig &operator=(const ClpPEPrimalColumnDantzig &rhs); |
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35 | |
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36 | /** clone */ |
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37 | ClpPrimalColumnPivot *clone(bool copyData = true) const; |
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38 | |
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39 | virtual int pivotColumn(CoinIndexedVector *updates, |
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40 | CoinIndexedVector *spareRow1, |
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41 | CoinIndexedVector *spareRow2, |
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42 | CoinIndexedVector *spareColumn1, |
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43 | CoinIndexedVector *spareColumn2); |
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44 | |
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45 | //@} |
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46 | /** Save weights - this may initialize weights as well |
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47 | This is as parent but may initialize ClpPESimplex |
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48 | */ |
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49 | virtual void saveWeights(ClpSimplex *model, int mode); |
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50 | //--------------------------------------------------------------------------- |
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51 | private: |
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52 | /* this PESimplex object is used to identify the compatible variables */ |
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53 | ClpPESimplex *modelPE_; |
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54 | |
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55 | /* psi is the factor used in the bi-dimensional pricing, it is < 1 and |
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56 | 1/psi grows with the priority given to compatible variables */ |
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57 | double psi_; |
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58 | |
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59 | /* useful counters for the update of the set of compatible variables */ |
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60 | int iCurrent_; |
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61 | int iInterval_; |
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62 | |
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63 | /* record if previous iterations concluded that compatibles should not be checked */ |
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64 | int coDegenCompatibles_; |
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65 | int coConsecutiveCompatibles_; |
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66 | bool updateCompatibles_; |
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67 | }; |
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68 | #endif |
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69 | |
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70 | /* vi: softtabstop=2 shiftwidth=2 expandtab tabstop=2 |
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71 | */ |
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