Could someone please explain to serving the "Seed" variable that appears in the input mask Random Number?

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Fernando Beltrán
Fernando Beltrán 2016-9-23
评论： Fernando Beltrán 2016-9-23
Good morning,
Could someone please explain to serving the "Seed" variable that appears in the input mask Random Number?Matlab help does not clear me.
Thank you very much

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回答（1 个）

Steven Lord
Steven Lord 2016-9-23
The seed is basically the initial condition for the pseudorandom number generator used to generate the random numbers.
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Steven Lord
Steven Lord 2016-9-23
No, the seed is not the first value returned by the generator. Let me try to explain with a concrete example. Let's say I have the list of numbers below (written in the format "index - value".) If I want to step through this list of numbers to generate a sequence (wrapping around when I reach the end of the list), the specific sequence I generate depends on where I start.
1 - 17
2 - 35
3 - 9
4 - 88
5 - 1
If my initial seed is 1 (so I start with index 1) the sequence I generate is:
17, 35, 9, 88, 1, 17, 35, ...
If my initial seed is 2 (so I start with index 2) the sequence I generate is:
35, 9, 88, 1, 17, 35, 9, 88, ...
That's not exactly how the random number generator seeds work for all the generators but hopefully the analogy illustrates the general idea. You can think of the seed as initialization data.

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