如何使施工启发式阶段在过度约束规划中分配所有实体？

Question

正如标题所说。我是Optaplanner的新开发人员。在我切换到过度约束规划之前，CH阶段工作正常：这里是CH按预期分配21个实体，LS能够找到一个最优解决方案（忽略中等得分级别）：

2021-10-01 12:26:07,933 [main] INFO  Solving started: time spent (3221), best score (-21init/0hard/0medium/0soft), environment mode (REPRODUCIBLE), move thread count (NONE), random (JDK with seed 0).
2021-10-01 12:26:10,664 [main] DEBUG     CH step (0), time spent (5955), score (-20init/0hard/0medium/-130soft), selected move count (21120), picked move (optaplanner.domain.Allocation@7c51782d {null -> ResourceTimegrain{resource=optaplanner.domain.Resource@276b68af, index=47, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:26:12,924 [main] DEBUG     CH step (1), time spent (8215), score (-19init/-1hard/0medium/-3025soft), selected move count (21120), picked move (optaplanner.domain.Allocation@77bc2e16 {null -> ResourceTimegrain{resource=optaplanner.domain.Resource@34d644b5, index=45, availability=2021-10-07T14:00-2021-10-07T22:00}}).
2021-10-01 12:26:14,137 [main] DEBUG     CH step (2), time spent (9428), score (-18init/-3hard/0medium/-3025soft), selected move count (21120), picked move (optaplanner.domain.Allocation@48e8c32a {null -> ResourceTimegrain{resource=optaplanner.domain.Resource@50915d5, index=0, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:26:15,293 [main] DEBUG     CH step (3), time spent (10584), score (-17init/-3hard/0medium/-3164soft), selected move count (21120), picked move (optaplanner.domain.Allocation@20a7953c {null -> ResourceTimegrain{resource=optaplanner.domain.Resource@276b68af, index=46, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:26:16,027 [main] DEBUG     CH step (4), time spent (11318), score (-16init/-4hard/0medium/-6098soft), selected move count (21120), picked move (optaplanner.domain.Allocation@57c00115 {null -> ResourceTimegrain{resource=optaplanner.domain.Resource@34d644b5, index=42, availability=2021-10-07T14:00-2021-10-07T22:00}}).
2021-10-01 12:26:16,654 [main] DEBUG     CH step (5), time spent (11945), score (-15init/-6hard/0medium/-6098soft), selected move count (21120), picked move (optaplanner.domain.Allocation@411a5965 {null -> ResourceTimegrain{resource=optaplanner.domain.Resource@50915d5, index=45, availability=2021-10-07T14:00-2021-10-07T22:00}}).
2021-10-01 12:26:17,267 [main] DEBUG     CH step (6), time spent (12558), score (-14init/-6hard/0medium/-6247soft), selected move count (21120), picked move (optaplanner.domain.Allocation@4fe533ff {null -> ResourceTimegrain{resource=optaplanner.domain.Resource@276b68af, index=45, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:26:17,850 [main] DEBUG     CH step (7), time spent (13141), score (-13init/-7hard/0medium/-9221soft), selected move count (21120), picked move (optaplanner.domain.Allocation@5377414a {null -> ResourceTimegrain{resource=optaplanner.domain.Resource@34d644b5, index=39, availability=2021-10-07T14:00-2021-10-07T22:00}}).
2021-10-01 12:26:18,541 [main] DEBUG     CH step (8), time spent (13832), score (-12init/-9hard/0medium/-9221soft), selected move count (21120), picked move (optaplanner.domain.Allocation@4e83a98 {null -> ResourceTimegrain{resource=optaplanner.domain.Resource@50915d5, index=42, availability=2021-10-07T14:00-2021-10-07T22:00}}).
2021-10-01 12:26:19,182 [main] DEBUG     CH step (9), time spent (14473), score (-11init/-9hard/0medium/-9380soft), selected move count (21120), picked move (optaplanner.domain.Allocation@17aa8a11 {null -> ResourceTimegrain{resource=optaplanner.domain.Resource@276b68af, index=44, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:26:19,758 [main] DEBUG     CH step (10), time spent (15049), score (-10init/-10hard/0medium/-9416soft), selected move count (21120), picked move (optaplanner.domain.Allocation@71b639d0 {null -> ResourceTimegrain{resource=optaplanner.domain.Resource@34d644b5, index=45, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:26:20,332 [main] DEBUG     CH step (11), time spent (15623), score (-9init/-12hard/0medium/-12250soft), selected move count (21120), picked move (optaplanner.domain.Allocation@18a25bbd {null -> ResourceTimegrain{resource=optaplanner.domain.Resource@63661fc7, index=45, availability=2021-10-07T14:00-2021-10-07T22:00}}).
2021-10-01 12:26:20,939 [main] DEBUG     CH step (12), time spent (16230), score (-8init/-12hard/0medium/-12419soft), selected move count (21120), picked move (optaplanner.domain.Allocation@5d5b9ecb {null -> ResourceTimegrain{resource=optaplanner.domain.Resource@276b68af, index=43, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:26:21,499 [main] DEBUG     CH step (13), time spent (16790), score (-7init/-13hard/0medium/-15413soft), selected move count (21120), picked move (optaplanner.domain.Allocation@1ee27d73 {null -> ResourceTimegrain{resource=optaplanner.domain.Resource@34d644b5, index=36, availability=2021-10-07T14:00-2021-10-07T22:00}}).
2021-10-01 12:26:22,085 [main] DEBUG     CH step (14), time spent (17376), score (-6init/-14hard/0medium/-15449soft), selected move count (21120), picked move (optaplanner.domain.Allocation@5e5aafc6 {null -> ResourceTimegrain{resource=optaplanner.domain.Resource@50915d5, index=44, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:26:22,669 [main] DEBUG     CH step (15), time spent (17960), score (-5init/-14hard/0medium/-15628soft), selected move count (21120), picked move (optaplanner.domain.Allocation@542f6803 {null -> ResourceTimegrain{resource=optaplanner.domain.Resource@276b68af, index=42, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:26:23,253 [main] DEBUG     CH step (16), time spent (18544), score (-4init/-15hard/0medium/-18662soft), selected move count (21120), picked move (optaplanner.domain.Allocation@5583098b {null -> ResourceTimegrain{resource=optaplanner.domain.Resource@34d644b5, index=33, availability=2021-10-07T14:00-2021-10-07T22:00}}).
2021-10-01 12:26:23,833 [main] DEBUG     CH step (17), time spent (19124), score (-3init/-16hard/0medium/-18698soft), selected move count (21120), picked move (optaplanner.domain.Allocation@5807efad {null -> ResourceTimegrain{resource=optaplanner.domain.Resource@63661fc7, index=43, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:26:24,427 [main] DEBUG     CH step (18), time spent (19718), score (-2init/-16hard/0medium/-18887soft), selected move count (21120), picked move (optaplanner.domain.Allocation@53a84ff4 {null -> ResourceTimegrain{resource=optaplanner.domain.Resource@276b68af, index=41, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:26:25,010 [main] DEBUG     CH step (19), time spent (20301), score (-1init/-17hard/0medium/-18923soft), selected move count (21120), picked move (optaplanner.domain.Allocation@7ce85af2 {null -> ResourceTimegrain{resource=optaplanner.domain.Resource@34d644b5, index=42, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:26:25,660 [main] DEBUG     CH step (20), time spent (20951), score (-19hard/0medium/-18953soft), selected move count (21120), picked move (optaplanner.domain.Allocation@316acbb5 {null -> ResourceTimegrain{resource=optaplanner.domain.Resource@65130cf2, index=45, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:26:25,662 [main] INFO  Construction Heuristic phase (0) ended: time spent (20953), best score (-19hard/0medium/-18953soft), score calculation speed (25027/sec), step total (21).
2021-10-01 12:26:25,961 [main] DEBUG     LS step (0), time spent (21252), score (-17hard/0medium/-24372soft), new best score (-17hard/0medium/-24372soft), accepted/selected move count (1000/1000), picked move (optaplanner.domain.Allocation@5296ab0c {ResourceTimegrain{resource=optaplanner.domain.Resource@276b68af, index=47, availability=2021-10-08T14:00-2021-10-08T22:00} -> ResourceTimegrain{resource=optaplanner.domain.Resource@34d644b5, index=41, availability=2021-10-05T14:00-2021-10-05T22:00}}).
2021-10-01 12:26:26,114 [main] DEBUG     LS step (1), time spent (21405), score (-15hard/0medium/-40094soft), new best score (-15hard/0medium/-40094soft), accepted/selected move count (1000/1067), picked move (optaplanner.domain.Allocation@730794bb {ResourceTimegrain{resource=optaplanner.domain.Resource@276b68af, index=45, availability=2021-10-08T14:00-2021-10-08T22:00} -> ResourceTimegrain{resource=optaplanner.domain.Resource@276b68af, index=46, availability=2021-10-01T14:00-2021-10-01T22:00}}).
2021-10-01 12:26:26,309 [main] DEBUG     LS step (2), time spent (21600), score (-13hard/0medium/-47776soft), new best score (-13hard/0medium/-47776soft), accepted/selected move count (1000/1160), picked move (optaplanner.domain.Allocation@73ed094c {ResourceTimegrain{resource=optaplanner.domain.Resource@276b68af, index=46, availability=2021-10-08T14:00-2021-10-08T22:00} -> ResourceTimegrain{resource=optaplanner.domain.Resource@276b68af, index=20, availability=2021-10-04T14:00-2021-10-04T22:00}}).
2021-10-01 12:26:26,471 [main] DEBUG     LS step (3), time spent (21762), score (-11hard/0medium/-65742soft), new best score (-11hard/0medium/-65742soft), accepted/selected move count (1000/1145), picked move (optaplanner.domain.Allocation@3c37489b {ResourceTimegrain{resource=optaplanner.domain.Resource@276b68af, index=42, availability=2021-10-08T14:00-2021-10-08T22:00} -> ResourceTimegrain{resource=optaplanner.domain.Resource@276b68af, index=0, availability=2021-10-01T14:00-2021-10-01T22:00}}).
2021-10-01 12:26:26,649 [main] DEBUG     LS step (4), time spent (21940), score (-9hard/0medium/-75202soft), new best score (-9hard/0medium/-75202soft), accepted/selected move count (1000/1148), picked move (optaplanner.domain.Allocation@a386ccf {ResourceTimegrain{resource=optaplanner.domain.Resource@276b68af, index=41, availability=2021-10-08T14:00-2021-10-08T22:00} -> ResourceTimegrain{resource=optaplanner.domain.Resource@276b68af, index=0, availability=2021-10-05T14:00-2021-10-05T22:00}}).
2021-10-01 12:26:26,832 [main] DEBUG     LS step (5), time spent (22123), score (-8hard/0medium/-75202soft), new best score (-8hard/0medium/-75202soft), accepted/selected move count (1000/1172), picked move (optaplanner.domain.Allocation@144402f6 {ResourceTimegrain{resource=optaplanner.domain.Resource@34d644b5, index=42, availability=2021-10-07T14:00-2021-10-07T22:00} -> ResourceTimegrain{resource=optaplanner.domain.Resource@34d644b5, index=11, availability=2021-10-05T14:00-2021-10-05T22:00}}).
--------------------(omitting other steps)--------------------
2021-10-01 12:27:04,541 [main] DEBUG     LS step (347), time spent (59832), score (0hard/0medium/-42754soft),     best score (0hard/0medium/-42754soft), accepted/selected move count (1000/1359), picked move (optaplanner.domain.Allocation@64047c70 {ResourceTimegrain{resource=optaplanner.domain.Resource@276b68af, index=46, availability=2021-10-06T14:00-2021-10-06T22:00}} <-> optaplanner.domain.Allocation@3c37489b {ResourceTimegrain{resource=optaplanner.domain.Resource@276b68af, index=44, availability=2021-10-06T14:00-2021-10-06T22:00}}).
2021-10-01 12:27:04,635 [main] DEBUG     LS step (348), time spent (59926), score (0hard/0medium/-42754soft),     best score (0hard/0medium/-42754soft), accepted/selected move count (1000/1365), picked move (optaplanner.domain.Allocation@68bb44fe {ResourceTimegrain{resource=optaplanner.domain.Resource@34d644b5, index=6, availability=2021-10-07T14:00-2021-10-07T22:00}} <-> optaplanner.domain.Allocation@62f89e6a {ResourceTimegrain{resource=optaplanner.domain.Resource@34d644b5, index=33, availability=2021-10-07T14:00-2021-10-07T22:00}}).
2021-10-01 12:27:04,709 [main] DEBUG     LS step (349), time spent (60000), score (0hard/0medium/-42754soft),     best score (0hard/0medium/-42754soft), accepted/selected move count (802/1086), picked move (optaplanner.domain.Allocation@7f77b1b0 {ResourceTimegrain{resource=optaplanner.domain.Resource@34d644b5, index=13, availability=2021-10-07T14:00-2021-10-07T22:00}} <-> optaplanner.domain.Allocation@6f8a9b12 {ResourceTimegrain{resource=optaplanner.domain.Resource@34d644b5, index=39, availability=2021-10-07T14:00-2021-10-07T22:00}}).
2021-10-01 12:27:04,709 [main] INFO  Local Search phase (1) ended: time spent (60000), best score (0hard/0medium/-42754soft), score calculation speed (11876/sec), step total (350).
2021-10-01 12:27:04,712 [main] INFO  Solving ended: time spent (60000), best score (0hard/0medium/-42754soft), score calculation speed (15115/sec), phase total (2), environment mode (REPRODUCIBLE), move thread count (NONE).

在切换到可空规划变量后，中等得分水平对每个未分配的实体都有一个惩罚的约束。这是解决optplanner无法找到最佳解决方案的同一个问题实例的日志：

2021-10-01 12:39:29,144 [main] INFO  Solving started: time spent (6235), best score (0hard/-21medium/0soft), environment mode (REPRODUCIBLE), move thread count (NONE), random (JDK with seed 0).
2021-10-01 12:39:33,797 [main] DEBUG     CH step (0), time spent (10892), score (0hard/-20medium/-130soft), selected move count (21121), picked move (optaplanner.domain.Allocation@7c51782d {null -> ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=47, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:39:36,698 [main] DEBUG     CH step (1), time spent (13793), score (0hard/-20medium/-130soft), selected move count (21121), picked move (optaplanner.domain.Allocation@77bc2e16 {null -> null}).
2021-10-01 12:39:39,032 [main] DEBUG     CH step (2), time spent (16127), score (0hard/-20medium/-130soft), selected move count (21121), picked move (optaplanner.domain.Allocation@48e8c32a {null -> null}).
2021-10-01 12:39:40,857 [main] DEBUG     CH step (3), time spent (17952), score (0hard/-19medium/-269soft), selected move count (21121), picked move (optaplanner.domain.Allocation@20a7953c {null -> ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=46, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:39:41,878 [main] DEBUG     CH step (4), time spent (18973), score (0hard/-19medium/-269soft), selected move count (21121), picked move (optaplanner.domain.Allocation@57c00115 {null -> null}).
2021-10-01 12:39:42,586 [main] DEBUG     CH step (5), time spent (19681), score (0hard/-19medium/-269soft), selected move count (21121), picked move (optaplanner.domain.Allocation@411a5965 {null -> null}).
2021-10-01 12:39:43,354 [main] DEBUG     CH step (6), time spent (20449), score (0hard/-18medium/-418soft), selected move count (21121), picked move (optaplanner.domain.Allocation@4fe533ff {null -> ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=45, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:39:44,007 [main] DEBUG     CH step (7), time spent (21102), score (0hard/-18medium/-418soft), selected move count (21121), picked move (optaplanner.domain.Allocation@5377414a {null -> null}).
2021-10-01 12:39:44,633 [main] DEBUG     CH step (8), time spent (21728), score (0hard/-18medium/-418soft), selected move count (21121), picked move (optaplanner.domain.Allocation@4e83a98 {null -> null}).
2021-10-01 12:39:45,251 [main] DEBUG     CH step (9), time spent (22346), score (0hard/-17medium/-577soft), selected move count (21121), picked move (optaplanner.domain.Allocation@17aa8a11 {null -> ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=44, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:39:45,898 [main] DEBUG     CH step (10), time spent (22993), score (0hard/-17medium/-577soft), selected move count (21121), picked move (optaplanner.domain.Allocation@71b639d0 {null -> null}).
2021-10-01 12:39:46,485 [main] DEBUG     CH step (11), time spent (23580), score (0hard/-17medium/-577soft), selected move count (21121), picked move (optaplanner.domain.Allocation@18a25bbd {null -> null}).
2021-10-01 12:39:47,151 [main] DEBUG     CH step (12), time spent (24246), score (0hard/-16medium/-746soft), selected move count (21121), picked move (optaplanner.domain.Allocation@5d5b9ecb {null -> ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=43, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:39:47,862 [main] DEBUG     CH step (13), time spent (24957), score (0hard/-16medium/-746soft), selected move count (21121), picked move (optaplanner.domain.Allocation@1ee27d73 {null -> null}).
2021-10-01 12:39:48,556 [main] DEBUG     CH step (14), time spent (25651), score (0hard/-16medium/-746soft), selected move count (21121), picked move (optaplanner.domain.Allocation@5e5aafc6 {null -> null}).
2021-10-01 12:39:49,193 [main] DEBUG     CH step (15), time spent (26288), score (0hard/-15medium/-925soft), selected move count (21121), picked move (optaplanner.domain.Allocation@542f6803 {null -> ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=42, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:39:49,781 [main] DEBUG     CH step (16), time spent (26876), score (0hard/-15medium/-925soft), selected move count (21121), picked move (optaplanner.domain.Allocation@5583098b {null -> null}).
2021-10-01 12:39:50,407 [main] DEBUG     CH step (17), time spent (27502), score (0hard/-15medium/-925soft), selected move count (21121), picked move (optaplanner.domain.Allocation@5807efad {null -> null}).
2021-10-01 12:39:51,168 [main] DEBUG     CH step (18), time spent (28262), score (0hard/-14medium/-1114soft), selected move count (21121), picked move (optaplanner.domain.Allocation@53a84ff4 {null -> ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=41, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:39:51,826 [main] DEBUG     CH step (19), time spent (28921), score (0hard/-14medium/-1114soft), selected move count (21121), picked move (optaplanner.domain.Allocation@7ce85af2 {null -> null}).
2021-10-01 12:39:52,372 [main] DEBUG     CH step (20), time spent (29467), score (0hard/-14medium/-1114soft), selected move count (21121), picked move (optaplanner.domain.Allocation@316acbb5 {null -> null}).
2021-10-01 12:39:52,374 [main] INFO  Construction Heuristic phase (0) ended: time spent (29469), best score (0hard/-14medium/-1114soft), score calculation speed (19105/sec), step total (21).
2021-10-01 12:39:52,692 [main] DEBUG     LS step (0), time spent (29787), score (0hard/-14medium/-1114soft),     best score (0hard/-14medium/-1114soft), accepted/selected move count (1000/1000), picked move (optaplanner.domain.Allocation@41418e53 {ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=43, availability=2021-10-08T14:00-2021-10-08T22:00}} <-> optaplanner.domain.Allocation@7f77b1b0 {ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=46, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:39:52,873 [main] DEBUG     LS step (1), time spent (29968), score (0hard/-14medium/-1114soft),     best score (0hard/-14medium/-1114soft), accepted/selected move count (1000/1213), picked move (optaplanner.domain.Allocation@c4d9e83 {ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=44, availability=2021-10-08T14:00-2021-10-08T22:00}} <-> optaplanner.domain.Allocation@6f8a9b12 {ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=47, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:39:53,061 [main] DEBUG     LS step (2), time spent (30156), score (0hard/-14medium/-1114soft),     best score (0hard/-14medium/-1114soft), accepted/selected move count (1000/1503), picked move (optaplanner.domain.Allocation@7b174491 {ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=45, availability=2021-10-08T14:00-2021-10-08T22:00}} <-> optaplanner.domain.Allocation@d464e23 {ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=41, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:39:53,270 [main] DEBUG     LS step (3), time spent (30365), score (0hard/-14medium/-1114soft),     best score (0hard/-14medium/-1114soft), accepted/selected move count (1000/1535), picked move (optaplanner.domain.Allocation@7f77b1b0 {ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=43, availability=2021-10-08T14:00-2021-10-08T22:00}} <-> optaplanner.domain.Allocation@41418e53 {ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=46, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:39:53,457 [main] DEBUG     LS step (4), time spent (30552), score (0hard/-14medium/-1114soft),     best score (0hard/-14medium/-1114soft), accepted/selected move count (1000/1532), picked move (optaplanner.domain.Allocation@c4d9e83 {ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=47, availability=2021-10-08T14:00-2021-10-08T22:00}} <-> optaplanner.domain.Allocation@6f8a9b12 {ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=44, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:39:53,605 [main] DEBUG     LS step (5), time spent (30700), score (0hard/-14medium/-1114soft),     best score (0hard/-14medium/-1114soft), accepted/selected move count (1000/1548), picked move (optaplanner.domain.Allocation@2957f567 {ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=42, availability=2021-10-08T14:00-2021-10-08T22:00}} <-> optaplanner.domain.Allocation@7b174491 {ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=41, availability=2021-10-08T14:00-2021-10-08T22:00}}).
--------------------(omitting other steps)--------------------
2021-10-01 12:40:22,649 [main] DEBUG     LS step (367), time spent (59744), score (0hard/-14medium/-1114soft),     best score (0hard/-14medium/-1114soft), accepted/selected move count (1000/1455), picked move (optaplanner.domain.Allocation@d464e23 {ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=43, availability=2021-10-08T14:00-2021-10-08T22:00}} <-> optaplanner.domain.Allocation@41418e53 {ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=41, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:40:22,731 [main] DEBUG     LS step (368), time spent (59826), score (0hard/-14medium/-1114soft),     best score (0hard/-14medium/-1114soft), accepted/selected move count (1000/1545), picked move (optaplanner.domain.Allocation@2957f567 {ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=42, availability=2021-10-08T14:00-2021-10-08T22:00}} <-> optaplanner.domain.Allocation@c4d9e83 {ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=44, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:40:22,812 [main] DEBUG     LS step (369), time spent (59907), score (0hard/-14medium/-1114soft),     best score (0hard/-14medium/-1114soft), accepted/selected move count (1000/1535), picked move (optaplanner.domain.Allocation@7b174491 {ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=45, availability=2021-10-08T14:00-2021-10-08T22:00}} <-> optaplanner.domain.Allocation@7f77b1b0 {ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=46, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:40:22,890 [main] DEBUG     LS step (370), time spent (59985), score (0hard/-14medium/-1114soft),     best score (0hard/-14medium/-1114soft), accepted/selected move count (1000/1525), picked move (optaplanner.domain.Allocation@6f8a9b12 {ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=47, availability=2021-10-08T14:00-2021-10-08T22:00}} <-> optaplanner.domain.Allocation@41418e53 {ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=43, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:40:22,905 [main] DEBUG     LS step (371), time spent (60000), score (0hard/-14medium/-1114soft),     best score (0hard/-14medium/-1114soft), accepted/selected move count (189/293), picked move (optaplanner.domain.Allocation@c4d9e83 {ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=42, availability=2021-10-08T14:00-2021-10-08T22:00}} <-> optaplanner.domain.Allocation@d464e23 {ResourceTimegrain{resource=optaplanner.domain.Resource@668ea404, index=41, availability=2021-10-08T14:00-2021-10-08T22:00}}).
2021-10-01 12:40:22,905 [main] INFO  Local Search phase (1) ended: time spent (60000), best score (0hard/-14medium/-1114soft), score calculation speed (18451/sec), step total (372).
2021-10-01 12:40:22,906 [main] INFO  Solving ended: time spent (60000), best score (0hard/-14medium/-1114soft), score calculation speed (16769/sec), phase total (2), environment mode (REPRODUCIBLE), move thread count (NONE).

null

Answer 1

步骤（“赋值null->null”）并非毫无意义。它显示OptaPlanner决定将某些内容保留为空。它做出了这个决定，因为这是一个决定，在所有可能的决定中，导致了最好的分数。（否则就不会做出这个决定。）

最有可能的是，分配给非空值会破坏硬约束，而OptaPlanner通过分配空值避免了这一点。OptaPlanner在这里的行为与预期一致--你说你有比无效更重要的关注点，OptaPlanner尊重你的选择。（无效性只是一个中等约束，而其他一些约束很难，因此更重要。）

如果希望赋值所有变量，请不要将其设为空。

或者，为未赋值变量是一个问题的情况设计重权重的硬约束。（但这与一开始就不让它们为空有什么不同？）