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Timeline for Numerical Boggle

Current License: CC BY-SA 4.0

31 events
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Aug 3, 2020 at 14:07 comment added RobPratt @DmitryKamenetsky I was not able to find any improvement in a reasonable time.
Jul 30, 2020 at 1:11 comment added Dmitry Kamenetsky @RobPratt I have improved the score again, see my update. Perhaps your methods can improve it even further?
Jul 27, 2020 at 23:53 history edited RobPratt CC BY-SA 4.0
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Jul 27, 2020 at 23:44 comment added Dmitry Kamenetsky @RobPratt you should probably mention that you ran your optimisations on my solution to obtain this result, otherwise future users will get confused.
Jul 27, 2020 at 14:52 history edited RobPratt CC BY-SA 4.0
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Jul 27, 2020 at 13:43 history edited RobPratt CC BY-SA 4.0
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Jul 27, 2020 at 4:01 history edited RobPratt CC BY-SA 4.0
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Jul 27, 2020 at 1:03 comment added Dmitry Kamenetsky Just posted it below. Thanks for participating!
Jul 27, 2020 at 0:56 comment added RobPratt @DmitryKamenetsky, thanks for the bounty. Can you please reveal your best solution now?
Jul 27, 2020 at 0:52 history bounty ended Dmitry Kamenetsky
Jul 26, 2020 at 22:09 history edited RobPratt CC BY-SA 4.0
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Jul 24, 2020 at 5:15 comment added Dmitry Kamenetsky @RobPratt I see thanks. I have solutions that are better than 339.
Jul 24, 2020 at 2:40 comment added RobPratt @DmitryKamenetsky Yes. But I also have some tricks to improve solutions by using modifications of the above formulation. Have you found something better than 339?
Jul 24, 2020 at 2:30 comment added Dmitry Kamenetsky @RobPratt so what happens when you change the 338 in the last line to something bigger? Does it just run indefinitely without finding a solution?
Jul 21, 2020 at 0:07 history edited RobPratt CC BY-SA 4.0
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Jul 20, 2020 at 20:55 history edited RobPratt CC BY-SA 4.0
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Jul 20, 2020 at 17:58 history edited RobPratt CC BY-SA 4.0
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Jul 20, 2020 at 1:56 comment added Dmitry Kamenetsky @RobPratt nice work. Better solutions are still possible.
Jul 20, 2020 at 0:36 comment added RobPratt @DmitryKamenetsky, updated just now.
Jul 20, 2020 at 0:36 history edited RobPratt CC BY-SA 4.0
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Jul 18, 2020 at 16:04 history edited RobPratt CC BY-SA 4.0
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Jul 17, 2020 at 23:46 comment added Dmitry Kamenetsky @RobPratt I can confirm that this solution is not optimal.
Jul 17, 2020 at 14:55 comment added RobPratt I don't know whether this solution is optimal. I will describe the full ILP formulation later.
Jul 17, 2020 at 13:18 comment added Jeffrey And, most importantly, is this just the best solution you found, or do you have data showing it's the optimal best solution possible?
Jul 17, 2020 at 5:06 comment added justhalf Haha, you always amaze me with your application of ILP in various places RobPratt. Have a +1. Can you describe more what you mean by using binary variables $x_{i,j,k}$ to make decision? Don't we need some sort of sequence in the mix?
Jul 17, 2020 at 4:20 comment added Dmitry Kamenetsky Thanks. I thought this was the case as ILP is your favorite tool.
Jul 17, 2020 at 4:14 comment added RobPratt I'm using integer linear programming, where the main decisions are represented by binary variables $x_{i,j,k}$ that indicate whether cell $(i,j)$ contains value $k$.
Jul 17, 2020 at 4:00 history edited RobPratt CC BY-SA 4.0
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Jul 16, 2020 at 23:59 comment added Dmitry Kamenetsky Great answer! Can you elaborate on your approach?
Jul 16, 2020 at 21:53 history edited RobPratt CC BY-SA 4.0
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Jul 16, 2020 at 20:14 history answered RobPratt CC BY-SA 4.0