always-cautious/ortools-clone
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48 Commits

Author SHA1 Message Date
Corentin Le Molgat
b4b226801b update include guards 2025-11-05 11:54:02 +01:00
Corentin Le Molgat
a66a6daac7 Bump Copyright to 2025 2025-01-10 11:35:44 +01:00
Laurent Perron
dba2281f13 [CP-SAT] more work on no_overlap_2d; revisit all includes 2024-12-04 17:47:28 +01:00
Laurent Perron
511bf047a7 backport cp-sat code from main 2024-05-30 10:51:53 +02:00
Laurent Perron
e9c81911c4 [CP-SAT] memory optimizations; improve no_overlap_2d; change default parameters 2024-01-10 16:42:04 +01:00
Mizux Seiha
a76bf1c5dd bump license boilerplate 2024-01-04 13:43:15 +01:00
Laurent Perron
6d8495f423 [CP-SAT] improve core based search with more core reduction 2023-07-27 08:49:46 -07:00
Laurent Perron
4ade94b960 [CP-SAT] remove unused pure sat code; cleanup sat_runner 2023-07-24 07:09:47 -07:00
Laurent Perron
65eedeb038 [CP-SAT] revisit core based search; polish graph_arc_lns 2023-07-17 14:41:57 -07:00
Laurent Perron
224a38f87f cleanup code 2023-05-24 11:42:11 +02:00
Laurent Perron
e4c6bbb327 [CP-SAT] better expand_objective during presolve; improved implementation of obj_lb_search; refactor search code 2022-12-15 10:37:30 +01:00
Laurent Perron
c08b48d25b [CP-SAT] improve oveflow detection in cuts; fix fingerprint; add objective_lb_search 2022-12-12 17:19:20 +01:00
Laurent Perron
87ca4f58ad [CP-SAT] bump license years; fix scheduling cuts; improve lb_tree_search 2022-06-16 15:21:00 +02:00
Laurent Perron
3ed32f3dd3 [CP-SAT] Add new scheduling lns; improve cover cuts; improve the propagation of the timetable constraint; speed-up domination detection (abort early if possible); remove deprecated knapsack cut code 2022-05-09 14:44:50 +02:00
Laurent Perron
13dbe6a387 [CP-SAT] fix crash in core search and in presolve; add more needed stl includes 2022-03-14 15:06:11 +01:00
Laurent Perron
f38a0418d1 [CP-SAT] polish code 2022-02-16 14:57:41 +01:00
Laurent Perron
8fe2df9a18 [CP-SAT] regenerates all includes; improve core solver when the objective is pseudo-boolean 2022-02-15 18:00:11 +01:00
Laurent Perron
d78ce574fc [CP-SAT] inactive max_hs code; use better core code when the objective is pseudo-boolean 2022-02-14 13:31:52 +01:00
Laurent Perron
0274d021cc [CP-SAT] reduce amount of logging 2022-02-11 13:40:22 +01:00
Laurent Perron
18d001912d remove ortools/base/random.h|cc; adapt code everywhere; increase robustness of glop preprocessor 2021-12-06 14:03:19 +01:00
Laurent Perron
dd85ab7a03 [CP-SAT] reorganize loader/linear_relaxation/cut code; improve SchedulingConstraintHelper; fix/speedup diffn propagation and cuts 2021-06-04 08:35:20 +02:00
Mizux Seiha
8bb54b04ef Bump Copyright to 2021 
FYI:
find ortools \( -type d -name .git -prune \) -o -type f -print0 | xargs -0 sed -i 's/\(Copyright 2010\)-2018/\1-2021/g'
 2021-04-01 21:00:53 +02:00
Laurent Perron
948476129c add support for model deep copy in C++ and python; increase the frequency of time limit checks in code solving 2021-02-17 16:42:54 +01:00
Laurent Perron
6467dc69b0 reformat the code; [CP-SAT] add dominated columns presolve 2020-10-28 13:42:51 +01:00
Mizux Seiha
20d0496bfb reapply google format 2020-10-23 00:45:17 +02:00
Laurent Perron
a4258f2bdf switch flags setters and getters to the absl format 2020-10-21 00:21:54 +02:00
Laurent Perron
2bb2115cdc add initial implementation of cover cuts 2020-09-03 17:50:04 +02:00
Laurent Perron
8ad3e58c6c [CP-SAT]: Fix overflow in feasibility pump; improve rounding heuristics in feasibility pump; implement better algorithm to provide explanation of infeasibility; work on max hitting set implementation for core based search 2020-07-13 17:10:13 +02:00
Laurent Perron
98b59bc5e2 continue re-architecture of CP-SAT search 2019-07-05 09:33:04 +02:00
Laurent Perron
3a99c0ee1b fix bug in CP-SAT checker with sparse circuit constraint; continue re-architecture core code; minor reindent of cp_model.py 2019-06-17 18:27:56 +02:00
Laurent Perron
0f2fe9e578 better presolve of int_max, make extraction of size 2 table constraint deterministic; internal cleanup of CP-SAT search internals 2019-05-10 23:26:49 +02:00
Laurent Perron
0d8a6aeb39 improve robustness of GLOP; continue rewriting of CP-SAT search internals; fix table extraction 2019-04-18 16:34:36 +02:00
Laurent Perron
f47f804a5b improve precision handling in CP-SAT/GLOP and in routing/GLOP 2019-04-18 13:29:21 +02:00
Laurent Perron
0d443c3569 split and rewrite CP-SAT search 2019-04-16 09:25:34 -07:00
Laurent Perron
87b9d55b21 update license headers 2018-11-10 18:00:53 +01:00
Corentin Le Molgat
f2989d319d Replace non ASCII character '–' in comments 
- Crash on ubuntu 16.04 during 'make java'...
 2018-09-10 13:37:04 +02:00
Laurent Perron
bd04f656b3 rename MODEL_SAT to FEASIBLE, MODEL_UNSAT to INFEASIBLE 2018-07-02 15:35:40 +02:00
Laurent Perron
df333efbcd rewrite drat checker for sat; make fz presolve deterministic; more optims on sat internals 2018-05-03 15:00:06 +02:00
Laurent Perron
9044de9355 new heuristics to minimize clauses in SAT; base library changes 2018-03-06 18:17:36 +01:00
Laurent Perron
8d7320b962 deep sync with base library; prepare for abseil.io integration 2017-12-08 14:52:49 +01:00
Laurent Perron
4cd6ecccb3 revisit time limit; add special sigint handler; fix bug in sat presolve with enforcement literals 2017-12-06 11:23:11 +01:00
Laurent Perron
2c7a8bf8f6 change copyright date 2017-10-17 13:08:10 +02:00
Laurent Perron
2003500276 improve sat performance 2017-09-06 10:18:51 +02:00
Laurent Perron
7155047b85 cleanup includes in sat 2017-07-27 11:28:55 -07:00
Laurent Perron
33314b1869 cleanup sat code after change to allow linear objective 2017-07-05 16:27:00 -07:00
Laurent Perron
0e50e4f5b8 work on sat; misc sync 2017-06-21 11:40:11 +02:00
Laurent Perron
f8246cd16d improve performance on sat solver 2017-05-16 10:43:07 +02:00
Laurent Perron
66b8d23079 move src to ortools; simplified python generation; remove some namespaces in the ortools/base helper files 2017-04-26 17:30:25 +02:00