Nocom – 2b2t Minecraft server exploit using Monte-Carlo localization

Re:Nocom – 2b2t Minecraft server exploit using Monte-Carlo l... by potatoman22 on Sunday December 19, 2021 @06:21PM (#29619608)

Did you use some form of Bayesian statistics to choose which chunk to query?

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Re:Nocom – 2b2t Minecraft server exploit using Monte-Carlo l... by leijurv on Sunday December 19, 2021 @09:16PM (#29620867)

Nothing so advanced, I'm afraid. The Monte Carlo system just creates a thousand points (2d position and velocity), and simulates them at 1 generation per second, culling points that are unlikely and reproducing points that are likely based on observations (clicking chunks and hearing back "loaded" or "unloaded").

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Re:Nocom – 2b2t Minecraft server exploit using Monte-Carlo l... by Vetch on Sunday December 19, 2021 @10:39PM (#29621327)

That sounds a lot like sequential monte carlo or a particle filter, which is a type of bayesian filter for inference. Really impressive what you did.

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Re:Nocom – 2b2t Minecraft server exploit using Monte-Carlo l... by whymauri on Monday December 20, 2021 @12:04AM (#29621727)

The write up actually does reference a paper on particle filters :o

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Re:Nocom – 2b2t Minecraft server exploit using Monte-Carlo l... by leijurv on Monday December 20, 2021 @02:38AM (#29622324)

Yeah, https://users.isy.liu.se/rt/schon/Publications/HolSG2006.pdf was great to refer to, just the right level of complexity for me.

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