When you use the POISSON function in Excel (or in OpenOffice Calc), it takes two arguments: an integer an 'average' number and returns a float. In python (i tried RandomArray and NumPy) it returns an array of random poisson numbers. What I really want is the percentage that this event will occur (it is a constant number and the array...
From what I understand, the standard generator is for the Normal Distribution. I have to generate random numbers according to the Normal, Uniform and Poisson Distributions, but I can't seem to find a class for the last 2. I have to generate them in the range of 0 - 999999. ...
I need a C function to calculate Poisson distribution for values of k upto 720. I need a highly efficient solution. I urgently need this solution. Thanks in advance ...
Original Question: I want to generate a Poisson process. If the number of arrivals by time t is N(t) and I have a Poisson distribution with parameter lambda how do I generate N(t)? How would I do this in C++? Clarification: I originally wanted to generate the process using a Poisson distribution. But, I was confused about what paramet...
i've been looking around, but i'm not sure how to do it. i've found this page which, in the last paragraph, says: A simple generator for random numbers taken from a Poisson distribution is obtained using this simple recipe: if x1, x2, ... is a sequence of random numbers with uniform distribution between zero and one, k is the first int...
Is there any way to randomly generate a set of positive numbers such that they have a desired mean and standard deviation? I have an algorithm to generate numbers with a gaussian distribution, but I don't know how to deal with negative numbers in a way the preserves the mean and standard deviation. It looks like a poisson distribution...
Let X = sum of n iid random variables. X = \sum_{i=1}^n X_i where n is a poisson random variable with some mean i have to calculate Pr(X > a) I am not able to apply the chernoff's bound theorem as poisson random variable is in th epower. pl help me Ranjan ...
Hi! I just implemented Poisson Disk generation in the plane with this simple algorithm: http://people.cs.ubc.ca/~rbridson/docs/bridson-siggraph07-poissondisk.pdf Now I would like to generate a Poisson Disk distribution on the surface of a hemisphere (or better, on a part of the spherical surface, given a certain angle) can anyone tell...
I'm aware of Knuth's algorithm for generating random Poisson distributed numbers (below in Java) but how do I translate that into calling a method, generateEvent(), randomly over time? int poissonRandomNumber(int lambda) { double L = Math.exp(-lambda); int k = 0; double p = 1; do { k = k + 1; double u = ...
I'm trying to solve a Poisson equation on a rectangular domain which ends up being a linear problem like Ax=b but since I know the boundary conditions, there are nodes where I have the solution values. I guess my question is... How can I solve the sparse system Ax=b if I know what some of the coordinates of x are and the undetermin...
I am trying to model the time lapse between when a user sees an ad and when they call the advertiser (presuming they do). I have two issues - part of the data seems exponential, but I am wondering if there is a similar distribution with an extra parameter because I cannot quite get it to fit. Also, the peak does not occur at t = 0 but ...
I tagged this question with poisson as I am not sure if it will be helpful in this case. I need to create a distribution (probably formatted as an image in the end) from a list of data. For example: data = [1, 2, 2, 2, 2, 3, 3, 3, 4, 4, 5, 10, 10, 10, 22, 30, 30, 35, 46, 58, 59, 59] such that the data can be used to create a visu...