Questions tagged [distribution]
This tag concerns statistical distributions, their implementations, and properties.
distribution
3,169
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R: ggplot distribution diagram with 'more than limit' bar and geom_vline
colleagues.
I am trying to build a distribution diagram that will satisfy the following conditions:
Shows percentage of the values lying in each bin.
Bin size is specified by user.
All the bars are ...
- 59
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0
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29
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What distribution should I use? [closed]
I'm new to statistics and need to create a probability distribution with the following study:
*Note: Due to proprietary reasons the example given below is the best representation of the real data.
...
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0
answers
27
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Hash function distribution [closed]
Hey considering an Hash function f(x), that distribute evenly, 1/m, for array size m.
Why the probability of two element when x1!=x2, to collide meaning f(x1)=f(x2) is 1/m and not 1/m^2 ?
my ...
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23
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Runtime Error in getBar1SizeOfGpu when initializing pytorch RPC
I’m encountering a runtime error while using PyTorch with the RPC backend on my system. The error message is as follows:
Could anyone tell me why this problem has happened and how to solve it ? Thank ...
0
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0
answers
26
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Is there a way to modelize a partial predictor in a classification problem with an unbalanced target?
I would like to share with you a classification issue I faced during the modelling process. I have to create a model for an unbalanced binary target by 4 predictors where one of them has 45% of wrong ...
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2
answers
101
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how to generate specific distribution?
I have a metric with 900K users, and I can't generate a distribution that would roughly repeat the existing one. I need this to quickly generate samples for AA AB tests (with guaranteed uplift).
Here ...
0
votes
1
answer
32
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How to find average per day using pivot table?
I have following data that shows distribution of fruits on each date.
I want to achieve the following format via Pivot Table, that shows percentage of Apple on each day and show the average at the ...
- 152
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1
answer
36
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Converting np.random.logistic to scipy.stats.fisk
I cannot figure out how to convert np.random.logistic to scipy.stats.fisk, here's my code:
import numpy as np
import numpy.random as npr
import scipy.stats as ss
import matplotlib.pyplot as plt
SEED =...
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69
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How can I calculate the distribution of a project cost according to execution date in Python?
I´m working on an energy investment projects dataframe (DF). In this DF, I have two datetime type columns with 'initial_data' and 'final_data' and one float type column 'total_cost'.
I need to create ...
1
vote
1
answer
34
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Scipy NLLF Loss has high values for distribution fitting
I'm trying to check if my data is distributed according to some distribution, however I always get NLLF values that doesn't make sense.
For example, here I'm generating 10K data points using a normal ...
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0
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1
answer
71
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Weibull Three Parameters Estimation using Maximum Likelihood and optimization methods
I'm having a problem estimating the Weibull three parameters using ML and optimization methods. My results in some of the methods do not look right. However, when a plot the curve looks fine with the ...
1
vote
1
answer
76
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Estimate Dirichlet parameters from multinomial regression
I am trying to use the predicted probabilities from a multinomial regression using multinom function from the nnet package in R to estimate the parameters for a Dirichlet distribution while taking ...
2
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0
answers
47
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How to implement a mixture of gamma distributions in Python without Bayes'?
I am trying to create examples to compare and contrast Bayesian MCMC (e.g. HMC) with non-Bayesian equivalents. One of the cases I am finding difficult is creating a mixture of gamma distributions.
I ...
- 1,278
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How do you use a custom distribution in a GARCH-model with rugarch in R?
I want to use a distribution that is not built in to the rugarch package in R. More specifically, the EGB2 distribution. If I have the PDF of the distribution, is it then possible to use this ...
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why there is wrong data from lognorm.fit?
I wrote code to get distribution for lognorm from 8 data and I got 8 graph. Just one of them look like having some problem(don't fit well to histogram) and the parameter from lognorm.fit is so ...
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