From bd2394e086bc7ed45af8b23c4cdba82c61a3540d Mon Sep 17 00:00:00 2001 From: FreeArtMan Date: Thu, 13 May 2021 19:42:09 +0100 Subject: Add video notes --- md/writeup/notes_on_videos.md | 51 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 md/writeup/notes_on_videos.md (limited to 'md/writeup/notes_on_videos.md') diff --git a/md/writeup/notes_on_videos.md b/md/writeup/notes_on_videos.md new file mode 100644 index 0000000..2d9a6bb --- /dev/null +++ b/md/writeup/notes_on_videos.md @@ -0,0 +1,51 @@ +title:Notes on videos +keywords:math,statistics + +# Video review +## Numberphile - The Best (and Worst) Ways to Shuffle Cards + +Video: https://www.youtube.com/watch?v=AxJubaijQbI&list=PLt5AfwLFPxWLDNtOEfUgBFX5YNEhltGzt + +The amount of times to shuffle depends on shuffling type: +riffle shuffle - 7 times +overhand shuffle - 10000 +Smooshing aka wash , corgi, chemmy - 30 sec on a edge, 1 min is enough + +If perfectly shuffled then 4.53 to guess of them papers: +https://arxiv.org/pdf/math/0501401.pdf +https://www.jstor.org/stable/2323590?seq=1 + +Trailing the Dovetail to its Lair (7 shuffles)): http://bit.ly/1xU6uPI +Shuffling Cards and Stopping Times: http://bit.ly/1FR0ca1 +Overhand Shuffles: http://bit.ly/1LNBSuU + + +### Numberphile - Shuffling Extra Footage (1/3) - Persi Diaconis +Video: https://www.youtube.com/watch?v=1jfm42Qd7Qw&list=PLt5AfwLFPxWLDNtOEfUgBFX5YNEhltGzt&index=2 + +Cut off phenomena happens when you shuffle and do randomness test, test +going to pass after x steps, and after x steps is always pass, like a step or a border +randomisation / shuffling schemes that doesn't have a cutoff phenomena. + +Asking question is there reasonable scheme to shuffle larger decks of cards, like +in dungeon and dragons + +### Numberphile - Shuffling Extra Footage (2/3) - Persi Diaconis +Video: https://www.youtube.com/watch?v=c_Hunaf0tWw&list=PLt5AfwLFPxWLDNtOEfUgBFX5YNEhltGzt&index=3 + +with microphone in casino where able to recreate shuffle from a sound. because casino shufflers are +perfect shufflers compare to not professional shufflers. +shuffling machines aren't good they are worse shuffling then physical shuffling. + +https://prglobalstore.com/products/automatic-card-shuffler?variant=30369630322740 maybe to get +one of those? + +Machines are going to be replaced with one that have different shuffling scheme with random number generator. Those machines you numbers that are have initial seed, and each number they add new one, there is cheats who watch rolled out numbers on casino machine, and figure our right moment to +join the game. + +### Numberphile - Shuffling Extra Footage (3/3) - Persi Diaconis +Video: https://www.youtube.com/watch?v=RIGJH12vVCY&list=PLt5AfwLFPxWLDNtOEfUgBFX5YNEhltGzt&index=4 + +Some history on why casinos don't use experts and don't research on math. And how businesses +assume they are right without any proper research. About how in bridge game discovered proper +probabilities of shuffling. -- cgit v1.2.3