可以说我在JAVA中有以下模型
class Shape {
String type;
String color;
String size;
}
并说我有以下基于上述模型的数据.
Triangle,Blue,Small Triangle,Red,Large Circle,Small Circle,Medium Square,Green,Medium Star,Large
我想回答以下问题
Given the type Circle how many unique colors?
Answer: 1
Given the type Circle how many unique sizes?
Answer: 2
Given the color Blue how many unique shapes?
Answer: 2
Given the color Blue how many unique sizes?
Answer: 3
Given the size Small how many unique shapes?
Answer: 2
Given the size Small how many unique colors?
Answer: 1
我想知道我是否应该按照以下方式进行建模……
set: shapes -> key: type -> bin(s): list of colors,list of sizes set: colors -> key: color -> bin(s): list of shapes,list of sizes set: sizes -> key: size -> bin(s): list of shapes,list of colors
或者有更好的方法吗？如果我这样做,我需要3倍的存储空间.
我还希望每套都有数十亿条目.顺便说一下模型已被编辑以保护inoncent代码;)