間諜家家酒保底期望值 - 神魔之塔
By Jack
at 2022-10-26T23:27
at 2022-10-26T23:27
Table of Contents
這次的機制很特別,所以我覺得先別急著噴
用Python跑個結果給大家看看
前提:
抽卡一次:5石 +10硬幣
初始硬幣:100
每抽10次:+30硬幣
抽齊意義:三大獎至少一張
每次一抽,機率不提高
大獎機率:p % 且三大抽齊獎皆相同 所以化糞池機率即為100 - 3p %
觸發抽齊即停止
實驗次數,每個大獎機率值抽10000次抽齊 計算平均石頭需求
公告 p = 4%/3, 抽齊平均:160石 13.4%人50抽保底抽齊
先講結論:三大獎機率值極度影響抽齊石頭期望值
歐洲人v.s非洲人分佈
抽齊石頭 比率 %
<50 0.10%
<100 12.78%
<150 24.44%
<175 75.102%
<200 79.77%
<250 86.59%
=250 13.4%
1. 測試抽卡機率值是否符合機率分佈 ( p%, p%, p%, 100-3p %)
測10000抽結果: [ 441, 453, 456, 8650]
https://i.imgur.com/F2BbgyC.png
2.
每抽一次,檢查是否抽齊,抽齊則結束
測試結果如下,橫軸為機率值(乘以100即為%),我測了0.1%, 0.2% ~ 1.5%,
2, 3, 4.5, 5, 10%共15組
https://i.imgur.com/Pgivd1A.png
https://i.imgur.com/mUGaEuh.png
以過去“黑金”保底40抽水準,那大獎大概要是0.5~0.6%
以過去合作35抽,大獎機率約 ~= 1.0%
若是以過去合作加倍時: 大獎2.5%, 二獎10%
1. 三大獎都要抽齊(含保底):約135石
2. 大獎抽到就停不管二獎:約115石
所以現在官方公開了機制,剩下能調整的就是大獎機率讓期望值不要太難看,
不然我看又要炎上了
程式碼在 https://github.com/taipingeric/tos
喜歡的可以按個星星
或是自己調看看機率
https://i.imgur.com/NsIg2EE.jpg
--
用Python跑個結果給大家看看
前提:
抽卡一次:5石 +10硬幣
初始硬幣:100
每抽10次:+30硬幣
抽齊意義:三大獎至少一張
每次一抽,機率不提高
大獎機率:p % 且三大抽齊獎皆相同 所以化糞池機率即為100 - 3p %
觸發抽齊即停止
實驗次數,每個大獎機率值抽10000次抽齊 計算平均石頭需求
公告 p = 4%/3, 抽齊平均:160石 13.4%人50抽保底抽齊
先講結論:三大獎機率值極度影響抽齊石頭期望值
歐洲人v.s非洲人分佈
抽齊石頭 比率 %
<50 0.10%
<100 12.78%
<150 24.44%
<175 75.102%
<200 79.77%
<250 86.59%
=250 13.4%
1. 測試抽卡機率值是否符合機率分佈 ( p%, p%, p%, 100-3p %)
測10000抽結果: [ 441, 453, 456, 8650]
https://i.imgur.com/F2BbgyC.png

2.
每抽一次,檢查是否抽齊,抽齊則結束
測試結果如下,橫軸為機率值(乘以100即為%),我測了0.1%, 0.2% ~ 1.5%,
2, 3, 4.5, 5, 10%共15組
https://i.imgur.com/Pgivd1A.png

https://i.imgur.com/mUGaEuh.png

以過去“黑金”保底40抽水準,那大獎大概要是0.5~0.6%
以過去合作35抽,大獎機率約 ~= 1.0%
若是以過去合作加倍時: 大獎2.5%, 二獎10%
1. 三大獎都要抽齊(含保底):約135石
2. 大獎抽到就停不管二獎:約115石
所以現在官方公開了機制,剩下能調整的就是大獎機率讓期望值不要太難看,
不然我看又要炎上了
程式碼在 https://github.com/taipingeric/tos
喜歡的可以按個星星
或是自己調看看機率
https://i.imgur.com/NsIg2EE.jpg

--
Tags:
神魔之塔
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