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Questions - random-seed

Python - passing random seed (generator) to `randn()`

I was reading this blog post and they suggest that rather than setting the random seed for the whole document np.random.seed(1234) x = np.random.randn(100) One should use a generator, which can be cr...
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Euler_Salter

python

numpy

random

scipy

random-seed

Votes: 0

Answers: 1

Latest Answer

You can use rng.normal(10) instead. The normal method is the equivalent of randn but using a random generator instance.
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joostblack

How to get sufficient entropy for shuffling cards in Java?

I'm working on a statistics project involving cards and shuffling, and I've run across an issue with random number generation. From a simple bit of math there are 52! possible deck permutations, which...
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Caedmon

java

random

random-seed

Votes: 0

Answers: 2

Latest Answer

Short answer: You have confused uniformity and entropy. Java's built in code is already mathematically perfect. You can't improve on these with a different pseudo-random number generator. Collections...
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rzwitserloot

Reproduce random DAG generated with dagitty::randomDAG()

I am using dagitty::randomDAG() to generate random directed acyclic graphs (DAGs). I would like to be able to reproduce the same random DAG but randomDAG() doesn't seem to respect the random seed in R...
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mark

javascript

r

directed-acyclic-graphs

random-seed

Votes: 0

Answers: 1

Latest Answer

I found a hacky solution to this: use the randomDag() function from the pcalg package, which does respond to the random seed. Then a bit of manipulation to revert to dagitty syntax library(pcalg) set...
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mark

C rand(). Issue with generating random strings

Encountered issue with generating random strings. Example below generates repeated blocks of random strings. Amount of random string in block depends on 'WORD_LENGTH'. For 1M 'COUNT' and 'WORD_LENGTH'...
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Mark_85

c

random

random-seed

Votes: 0

Answers: 3

Latest Answer

To sum up comments from @WhozCraig and @LightVillet. Problem discovered in : buf[i] = charset[ rand() % sizeof charset] Being precise with 'rand() % X' and connected with 'X' and not connected with c...
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Mark_85

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