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Questions tagged [simulation]

Simulation is the imitation of some real thing, state of affairs, or process. The act of simulating something generally entails representing certain key characteristics or behaviours of a selected physical or abstract system.

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Monte Carlo Simulation of a date based on another date

I have a dataset like this. The date_e was accurate for status= "1". I want to simulate date_e based on age. Therefore, new_date_e will be changed for status="0", will be same for status="1". Also, status=1 has higher risk, so df= date_e-age should…
Ali Roghani
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Fitting decays in R

I have a data like that I want to fit decay. library(tidyverse) library(broom) t = 1:100 x=1:80 y1=sample(seq(from = 20, to = 50), size = 100, replace = TRUE) y1<-y1 %>% jitter() y2 = 24 + (60 - 24) * -0.01 * x %>% jitter(10) df1 <- tibble(t = t,…
Ali Roghani
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Feedback loop in OpenModelica

I am currently working on a two zone combustion model in OpenModelica and I want to simulate the loop presented in the next picture volume calculation. With this way OpenModelica always gives me singular matrix error. Is it even possible to this…
Paladin2805
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How to easily generate/simulate example data with different groups for modelling

How to easily generate/simulate meaningful example data for modelling: e.g. telling that give me n rows of data, for 2 groups, their sex distributions and mean age should differ by X and Y units, respectively? Is there a simple way for doing it…
st4co4
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Simulating Bayesian data using R

I'm trying to generate a dataset generated from 3 distributions and then plot it with the groups colored differently. The outcome is distributed with mean that is a linear regression of time and the errors follow a standard normal distribution. I…
Emma N
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I need to define 3 kinds of messages in omnet

I want to define 3 kinds of messages in omnet I know I have to use messagekind but I couldnt please help me I want help message, control message and jobs, which jobs should be processed thank you so much
Fatimah Faraji
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Problem with making Circle properly appear on screen in Pygame

I think my understanding of Pygame is a little bit weak. I would appreciate any help in general about the intricacies of the code (since this was given by the teacher) or simply how I can at least make the obstacle visible. def draw(screen,…
jbg05
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Creating a "Prisoner's Dilemma Table" in R

I am working with the R programming language. I created the following "game" in R which involves two players flipping coins (the result of each coin is associated with a "score") to see who gets the highest score: score_coin_1 =…
stats_noob
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How to repeatedly insert arguments from a list into a function until the list is empty?

Using R, I am working with simulating the outcome from an experiment where participants choose between two options (A or B) defined by their outcomes (x) and probabilities of winning the outcome (p). I have a function "f" that collects its arguments…
Mattias
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KeyError: [....] not found in index

For a project that I am working on, I created a linear regression model. After fitting that line, I wanted to simulate the data over and over again using np.random.choice on my data to see the variability in the regression line say the data be…
Jensen_ray
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Issues while running tutorials of Drake programs, in Underactuated Robotics document, in Deepnote?

I am trying to build and simulate a pendulum in drake. I have created a urdf file(still don't know how to add the inertia tags) and am trying to simulate it, but I don't know how to? So, I was looking at the simple pendulum tutorial in…
Raviverma Chamarti
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How to fix incorrect energy conservation problem in mass-spring-system simulation using RK4 method

I am making a simulation where you create different balls of certain mass, connected by springs which you can define (in the program below all springs have natural length L and spring constant k). How I do it is I created a function accel(b,BALLS),…
Simon
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Simulate Nested Logit Errors

I'm trying to simulate data that can be estimated using a nested logit model. If epsilon is distributed nested logit with a nesting structure $B_1, ..., B_K $, and nesting parameters $\lambda_1, ... \lambda_K$ then the CDF of epsilon is I am…
EB727
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Simulating a random walk in R

How do I simulate a sequence of random variables Xn with probability distribution P(Xn=1)=1/2, P(Xn=-1)=1/2 in R? (To be used to simulate a random walk).
fran
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tidyverse: Simulating random sample with nested factor

I want to simulate random sample with nested factor. Factor Dept has two levels A & B. Level A has two nested levels A1 and A2. Level B has three nested levels B1, B2 and B3. Want to simulate random sample from 2022-01-01 to 2022-01-31 using some R…
MYaseen208
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