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WIP: Fix N-Queens Constraints for Antidiagonals, Performance Improvements #350

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EthanJamesLew wants to merge 1 commit into coin-or:master from EthanJamesLew:bugfix/test-nqueens

EthanJamesLew commented May 6, 2023 •

edited

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Summary

fixed constraints as seen in issue Incorrect n-Queens Constraints? #344
remove nested double loop to speed up model generation

TODO

add assertions
run comparison of model performance improvements


          change antidiagonal index (coin-or#344), remove nested double loop

7ffdacf

CLAassistant commented May 6, 2023 •

edited

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Author

EthanJamesLew commented May 6, 2023

Comparisons

	Board Size [s]	Solver	Previous Time [s]	New Time [s]	Multiplier
0	100	pulp	0.2395	0.1014	2.36193
1	200	pulp	1.5038	0.3815	3.94181
2	300	pulp	5.108	0.955	5.34869
3	400	pulp	12.218	1.6884	7.23644
4	500	pulp	23.3355	2.5825	9.03601
5	600	pulp	40.4356	4.0757	9.92114
6	700	pulp	67.414	5.7228	11.7799
7	800	pulp	99.4078	7.5092	13.2381
8	900	pulp	143.113	9.6846	14.7774
9	1000	pulp	194.24	12.1774	15.9509

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