Timeline


and

May 24, 2008:

8:39 AM WikiStart edited by pbelotti
(diff)

May 23, 2008:

1:09 PM Ticket #23 (Bonmin stops because Ipopt couldn't solve an NLP) created by stefan
Hi, from time to time, Bonmin stops with a message from Ipopt like …

May 21, 2008:

2:15 PM Changeset [1156] by pbelotti
added GAMS writing method

May 20, 2008:

5:18 PM Changeset [1155] by pbelotti
removed bad null-interval test. Added MILP cuts (disabled by default) …

May 19, 2008:

9:16 AM Changeset [1154] by pbelotti
preposed reduced cost BT to OBBT and added a further round of FBBT …

May 18, 2008:

3:42 PM Changeset [1153] by pbelotti
small changes in virtual expression methods

May 17, 2008:

11:47 AM Changeset [1152] by pbelotti
Force using NLPHeuristic only up to limited depth and then with …

May 7, 2008:

10:37 PM Changeset [1151] by andreasw
added code that prints out cut generator statistics after the run. …
10:08 PM Changeset [1150] by andreasw
typo
9:25 PM Changeset [1149] by andreasw
disabled solves_per_depth by default
5:42 PM Changeset [1148] by pbelotti
normalize infeasibility of x_k = theta (x) with norm of theta's …
12:52 PM Changeset [1147] by andreasw
added option to solver on average given number of NLPs per level for hybrid

May 6, 2008:

2:18 PM Changeset [1146] by pbelotti
assume all problems into minimization form; introduced mult. factor …

May 5, 2008:

4:57 PM Changeset [1145] by pbelotti
Fixed convexification bug for divisions. Disable variables with null …
1:12 PM Changeset [1144] by pbonami
Enable bb log in OA

May 4, 2008:

8:11 PM Changeset [1143] by andreasw
make QP-hot starts efficient; fixed uninitialized variables in BonCbc?
5:33 PM Changeset [1142] by andreasw
bugfix in updateInformation; disable only_pseudo_when_trusted_
12:48 PM Changeset [1141] by pbelotti
separated infeasibility from variable selection in VT. Added further …

May 3, 2008:

11:33 AM Changeset [1140] by pbelotti
fixed patience check in getIntegerCandidate(); do extra check of …

May 2, 2008:

10:56 AM Changeset [1139] by pbonami
Revert to old computeUsefullness function. Make nlp log display full …
9:30 AM Changeset [1138] by pbelotti
Added more elaborate (standard and strong) branching techniques, still …

May 1, 2008:

11:53 PM Changeset [1137] by andreasw
hot start for BQPD
10:02 AM Changeset [1136] by pbonami
Make data members protected so that Couenne can get access
9:26 AM Changeset [1135] by pbonami
Reactivate warm start
9:07 AM Changeset [1134] by pbonami
Fix a link
7:37 AM Changeset [1133] by pbonami
Transmit bb_log_level
6:59 AM Changeset [1132] by pbonami
Fix in warm start

Apr 30, 2008:

6:32 PM Changeset [1131] by andreasw
making changes as suggested by Pierre to fix Filter warm start; …

Apr 29, 2008:

4:51 PM Changeset [1130] by pbelotti
fixed zero-coefficient problem with initial LP relaxation. Do not add …
11:53 AM Changeset [1129] by pbonami
Add option to do warm starts differently with lp-branching-solver
7:18 AM Changeset [1128] by pbonami
Fix return code in LpStrongBranching?

Apr 28, 2008:

9:23 AM Changeset [1127] by pbelotti
added threshold for pseudocosts in interval policy

Apr 27, 2008:

11:34 PM Changeset [1126] by andreasw
removed apparent debug output
5:40 PM Changeset [1125] by pbelotti
strong branching with convexification cuts.

Apr 25, 2008:

9:02 PM Changeset [1124] by andreasw
catch return code from Bqpd if it had a problem in warm start
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