Questions tagged [empirical-distribution]
20 questions
3
votes
1 answer
Graph of empirical and theoretical distributions for Zero Inflated Poisson Distribution
Following is a kind of data set I am working on it:
data <- c(0, 1, 0, 11, 2, 0, 3, 0, 0, 2, 1, 3, 1, 0, 1, 0, 0, 0, 2, 3,
0, 0, 0, 8, 1, 1, 1, 0, 1, 1, 2, 7, 0, 0, 0, 5, 2, 3, 6, 1, 1,
5, 2, 9, 0, 0, 1, 21, 16, 2, 9, 6, 25, 2, 1, 12, 16, 14, 15,…
Nawa Raj
- 111
- 1
- 7
2
votes
1 answer
How to invert the estimate of a function with multiple inputs, but only invert the function for a single input
I am trying to invert a function like one would invert an empirical cdf. If I wanted to invert an empirical cdf, I would write something like,
tau = 0.8
y=rnorm(1000,1)
[f,x]=ecdf(y)
q = interp1(f,x,tau,'next');
Instead, suppose that I have defined…
shmiggens
- 145
- 3
2
votes
1 answer
Efficient Empirical Distribution Calculation
Consider empirically estimating the conditional distribution discrete in both X and Y,
Pr(Y|X)
Both variables have been mapped to integer sets such that
X in {1, ..., N_X} and Y in {1, ..., N_Y}
I have a dataframe of observations obs, such that…
rwolst
- 12,904
- 16
- 54
- 75
2
votes
1 answer
Efficient computation of bivariate empirical cdf in R/Fortran
Given an n*2 data matrix X I'd like to calculate the bivariate empirical cdf for each observation, i.e. for each i in 1:n, return the percentage of observations with 1st element not greater than X[i,1] and 2nd element not greater than…
David
- 143
- 9
2
votes
1 answer
Calculating confidence intervals from the empirical distribution obtained with the bootstrap method
I have calculated the empirical distribution of the sample mean using the bootstrap method, but now I would also need to calculate the confidence interval for the population mean using the empirical distribution I found.
Is there a way to do it…
nbro
- 15,395
- 32
- 113
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1
vote
1 answer
Truncated Poisson vs Hurdle model: why different values?
I want to do a regression with count data model, where doctor visits is the dependent variable. I did a two-part model with first a probit model for no doctor visit at all or one or more and then a Poisson model for at least one doctor visit. After…
DaS
- 11
- 2
1
vote
0 answers
Wasserstein distance between two distributions python
I have distributions of some data pre and post an event occurrence. I want to find the distance between these two distributions. To put it differently, how much would I need to scale pre-event distribution to come close to the post-event…
user5264628
- 27
- 3
1
vote
1 answer
Generate empirical/user defined distribution with desired mean and std
I have generated a demand distribution based on the actual demand data of one year. This distribution is non-normal or similar to any theoretical distributions. I use this empirical demand distribution for a simulation study.
In current empirical…
Jack
- 1,339
- 1
- 12
- 31
1
vote
0 answers
predict empirical probability distribution shift
I'm looking into creating a simulation for passengers that arrive at a bus stop at a specific time of the day. I do this by drawing from a created probability distribution function. From measurements on bus ticket sales over the last 2 months I have…
Blob911
- 139
- 2
- 10
0
votes
1 answer
Empirical Cumulative Density Function - R software
I have a problem with plotting ECDF. I try to reverse the x axis value like 1-(the function).
Because I wanna have smaller in the beginning of the graph and decreasing like in my reference graph.
load("91-20.RData")
ts <-…
kettaren ray
- 39
- 4
0
votes
1 answer
Why does "emd" get imported but not "EMD"?
I'm trying to import EMD from the PyEMD package. But I'm facing a peculiar issue.
When I write everything in small-case i.e. "emd" & "pyemd", it works but as per the desired case i.e. "EMD" & "PyEMD", it doesn't work.
!pip install pyemd
from pyemd…
EnigmAI
- 157
- 1
- 9
0
votes
1 answer
How to scale X of plot in Python?
I have the following code that builds the empirical function according to data stored in Z_score_list.
Z_score_list.sort()
edf = []
step = 1 / len(Z_score_list)
for i in range(len(Z_score_list)):
edf.append(step * i)
edf =…
Arzental
- 103
- 6
0
votes
0 answers
Empirical Distribution Function in Python better ways or formuals
I want to know if there is a better, more accurate ECDF in python (for a single vector) or in general to use than mine. this is my current -
x = np.sort(X)
y = np.arange(1, len(x) + 1) / float(len(x))
Tal Bar
- 5
- 2
0
votes
0 answers
R - Calculate probability that a point has been drawn from an empirical multivariate distribution
I collected data (5 variables) for 1000 items.
#example data (my data is not neccesarily multivariate normal!)
data <- rbind(c(7.2, 9, 14.1, 22.3, 3.9),
cbind(x1=rnorm(999,10,1), x2=rnorm(999,8,0.2), x3=rnorm(999,12.4,1.2),…
Anti
- 365
- 1
- 14
0
votes
1 answer
Plotting a CDF from a multiclass pandas dataframe
I understand the package empiricaldist provides a CDF function as per the documentation.
However, I find it tricky to plot my dataframe in the column has multiple values.
df.head()
…
arilwan
- 3,374
- 5
- 26
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