#!/usr/bin/python3.7
# -*- coding: utf-8 -*-
# @Time : 2019/4/9 9:03
# @Author: Jtyoui@qq.com
from jtyoui.data.constant import MathSymbols
"""
联合概率:两件事情同时发生的概率
"""
[文档]def independent_joint(a, operation, b):
"""独立联合事件
:param operation: and==∩，or==|,比如:independent_joint(a,'and',b)等价于P(a∩b)
"""
if operation == 'and' or operation == MathSymbols.intersection:
return a * b
elif operation == 'or' and operation == MathSymbols.condition:
return a
[文档]def non_independent_joint(a, operation, b):
"""非独立联合事件"""
if operation == 'and' or operation == MathSymbols.intersection:
return a * non_independent_joint(b, MathSymbols.condition, a)