Ventana software support forum

Thank you so much. it was very helpful

I calculated the 95% Confidence Intervals according to (https://www.vensim.com/documentation/index.html?usr18.htm). But when I look at the results, there is a sentence that makes me worry. It says that: * Means a bound was reached, i.e. payoff not at criterion And for most of the variables, the conf...

Thank you soooo much. It really helps me.

Hi, Does anyone know how to set the parameters' values into the model when calibration is done? I am using Vensim and I have 85 variables that are being calibrated, and it's weird if I want to insert them manually in the model when I get their optimum values after optimization. I have tried importin...

Thank you so much

Here you are.
I used "active initial" for the input of eggs.

Hi Guys, I have a loop in my model, and I can't figure out how I should remove the "simultaneous initial value" error. In order to break the loop, I used "active initial" for one of the rates in the model, and it solved the error, but now, this initial value is influencing all th...

Thank you so much

Thank you for your explanation, Would you tell me where I can find the confidence interval in the output of model? I am a beginner and I can't find a way to calculate it. Does Vensim provide confidence interval for parameters that are being calibrated or I should follow the Dogan paper? Thanks for y...

Administrator wrote:I don't understand what you want to do. Can you upload an example?

Or is "VECTOR ELM MAP" the function you need?

I mean I have a subscript which has 22 different elements. Then, In an equation, like IF THEN ELSE, I want to refer to the 9th element.
How should I do that?

Can you have a look at the attached model? I think does what you need (for a 2D array). Tony. Dear Tony, I would like to use an index of one subscript. My subscript which is named "Path" has 22 paths. I want to use a IF THEN ELSE function and say, for instance, just use subscripts 2,3, an...

I have 2 data series, but the number of parameters that I am trying to calibrate are more than 7. Is it practical if I have this amount of parameters for calibrating? Is Vensim able to obtain an optimum value for parameters by calibration? You can calibrate using seven parameters. Are you having tr...

I have 2 data series, but the number of parameters that I am trying to calibrate are more than 7. Is it practical if I have this amount of parameters for calibrating?
Is Vensim able to obtain an optimum value for parameters by calibration?