Questions tagged [random]
This tag is for questions pertaining to random numbers and their generators, whether pseudo-random or truly random.
random
35,525
questions
1
vote
1
answer
54
views
Generate n random 2D points within a valid region
I want to generate a fixed number of random-uniformly distributed xy points within a valid mask.
The generated points should be continuous, i.e. can be "between pixels".
I'm looking for an ...
- 33
0
votes
0
answers
23
views
rkdevine returns constant zero-valued simulations
I found that the rkdevine function, from the package kdevine, is returning constant zero-valued simulations when it shouldn't be the case. The function is meant to simulate from a a kdevine object, ...
- 1
-2
votes
0
answers
26
views
Powershell script reset expired AD pw with random pw [closed]
Does anyone have any suggestions of a PowerShell script, or how to find one, that would allow us to search Windows AD for passwords expired 7 days or more and change the password to a new random ...
- 1
-2
votes
0
answers
72
views
Why does my text based game display my options instead of attacking?
In my text-based Python game I handle random and scripted encounters:
import time
import os
import random
import sys
from termcolor import cprint
health = 75
player_turn_done = False
usr_inpt = 0
...
- 5
1
vote
1
answer
51
views
Using for loops, while, tidyverse, or packages to create a dataset with matching characteristics from a previous one (sampling) [closed]
I'm working with panel data. We assessed children in 2019 and 2020. Therefore, I have two datasets (2019 and 2020) and I want to create a third dataset matching the data from the second dataset (2020) ...
- 1,552
-3
votes
0
answers
37
views
cannot reshape array of size 1000 into shape (100,100) [closed]
>>> cent_rand = np.random.randint(1919, 3946, 1000)
>>> len(cent_rand)
1000
>>> two_d_cent = cent_rand.reshape((100,100))
Traceback (most recent call last):
File "<...
0
votes
0
answers
59
views
Generate random value 0 to 1 using `crypto-js` library
I'm working on a small JS library, it consists of several npm packages for Web, NodeJS and React Native, but all of them use the shared core library.
In the core library I've been using Math.random(), ...
- 931
0
votes
0
answers
12
views
Creating a pseudorandom matrix with a specific determinant and specific entropy
I was sampling several markov matrices for a project, for that:
I want to create a random matrix, which
is markovian(simply it's rows sum to one) and all its elements are between 0 and 1
it has a ...
- 21
0
votes
0
answers
24
views
Do I need to feed the entropy pool for /dev/random and /dev/urandom?
I'm working on an update of quite old kernel to just a bit newer and I've noticed that my /proc/sys/kernel/random is now quite different, e.g. entropy_pool (entropy_avail) value changed from 4096 to ...
- 1,166
1
vote
0
answers
31
views
Why I can't use gen_range method from rand::Rng trait with rand_chacha::ChaChaRng [duplicate]
I was looking for a seedable random number generator with consistent behavior across different platforms, and I was pointed to use ChaChaRng from the rand_chacha crate.
I need to generate numbers ...
- 642
0
votes
4
answers
74
views
Displaying all Results for Prime Numbers on One Popup Window
I am trying to create a password generator in Python. I'm starting off by writing a program to generate prime numbers to use when calculating RSA, and I found a program that I modified to display ...
4
votes
2
answers
84
views
Reverse work out the mean using random number seed
In R language version 4.4.1 (the version should not matter, just for the sake of discussion), we write the code :
set.seed(1234)
x <- 5
y <- rnorm(1, mean = x, sd = 0.1)
We will be able to ...
- 342
0
votes
0
answers
48
views
Numba and Numpy Generator Methods & Thread Safety Documentation Clarification
The Numba documention for the Numpy Random module states:
The current Numba support for Generator is not thread-safe, hence we do not recommend using Generator methods in methods with parallel ...
- 93
0
votes
0
answers
12
views
how to select N distinct items from M conflict items with different weight? #algorithm A-Res
A-RES
A-RES calls for the selection of m distinct random items out of a population of size n, each item with weight.
but my case is:
a huge stream of input(some item maybe conflict many times with ...
3
votes
1
answer
63
views
can a random byte-array be decompressed? What algorithm would be used?
I can insert any byte-array into a compression-algorithm like Lempel-Ziv and i will get a lossless compressed byte-array back. I can decompress this again.
But is there an algorithm that can ...
- 134