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Arthur Goldsipe

MathWorks

Last seen: 6 dagen ago Active since 2011

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Answered
Model fitting using different data sets in SimBiology
Would it be possible for you to upgrade to R2021b? There's a new feature in that release that would make it much easier to do wh...

7 dagen ago | 1

| accepted

Answered
How to assess to the simulation data after the parameter estimation in Simbiology
Hi Jesse, You can get access to the SimData results used in the plot method by calling the fitted method (described here). If y...

9 dagen ago | 0

| accepted

Answered
Simulation of tissue drug concentration profile with Kp values
If you are looking for an example of how to incorporate tissue partition coefficients into a PBPK model, then perhaps you can us...

14 dagen ago | 0

| accepted

Answered
How to set boundary conditions for a reaction to occur in SimBiology?
Hi, Take a look at this answer I shared. It's from several years ago, but the information is still accurate. Some additional ti...

27 dagen ago | 0

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Answered
Invalid assignment syntax or parse error for event function (Simbiology)
Hi, Events can only assign a value to a component, not to an expression. So your assignment ((syn_CT.PD1_PDL1+syn_CT.PD1_PDL2)/...

30 dagen ago | 0

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Answered
How to customize built-in optimization functions in SimBiology without using MATLAB code?
If I understand your question correctly, you are asking how to customie the cost (or objective) function when using a fit progra...

ongeveer een maand ago | 0

| accepted

Answered
why PSI values are diffrent when nlmefit using ode45 solver compared to when it uses analytical solution?
The reason the results from nlmefit differ significantly is because your ODE solution is not equivalent to your analyitical solu...

ongeveer 2 maanden ago | 0

Answered
Scanning Simbiology variants in Matlab for virtual population simulations
There are lots of ways you could do this. And you certainly could use variants. But I personally would do this by creating a Sim...

ongeveer 2 maanden ago | 0

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Answered
How do I generate a rectangular pulse for an input species in Simbiology?
I would not use rules to implement discontinuous changes in a SimBiology model. The ODE solver should be restarted whenever ther...

ongeveer 2 maanden ago | 0

| accepted

Answered
Error: expected the time data (independent variable) of the data input argument to be finite
This error means that your time data is invalid because it contains non-finite values. Look for infinite or NaN (not a number) v...

2 maanden ago | 0

| accepted

Answered
use simbiology for radiation dosimetry
SimBiology is primarily designed to model reactions of species in compartments. It can be used to model other problems that are ...

3 maanden ago | 0

Answered
Should plasma membrane be its own compartment?
Yes, I think the simplest approach would be to create separate compartments for each location where you need to consider that sp...

3 maanden ago | 0

Answered
Different units in the same Simbiology model
I would recommend against mixing mass-based units and mole-based units for species participating in the same reaction. In such c...

3 maanden ago | 2

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Answered
Status 429 with message "Too Many Requests" in response to NCBI URL
As described here, you are seeing the error because NCBI limits the number of queries from a particular IP address to 3 per seco...

3 maanden ago | 0

Answered
eGPU set up for Simbiology calculation
No, SimBiology does not currently have any built-in support for GPU calculations. I suggest profiling to see what code is takin...

3 maanden ago | 0

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Answered
What toolboxes are useful to run with SimBiology?
I recommend simulating your model within SimBiology (that is, using SimBiology's ODE solvers rather than exporting your equation...

3 maanden ago | 0

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Answered
Apply Parallel Computing to Simbiology
Hi Jesse, The simplest fix would be to change 'ProgressPlot',true to 'ProgressPlot',false. The issue is that you're trying to c...

3 maanden ago | 2

| accepted

Answered
Command in Script for Data Comparison
Hi, Are you using the functions sbiofit or sbiofitmixed? If so, you will find RMSE, AIC, and BIC as properties on the first out...

4 maanden ago | 1

| accepted

Answered
Need help converting berkeley madonna code to matlab code
If you'd like to convert a Berkeley Madonna model to the equivalent SimBiology model, you can try using this converter from the ...

5 maanden ago | 1

Answered
Steady State in insulindemo
Hi Pierre, Apologies for the long response, but answering your question acurately requires discussing a lot of details, at leas...

6 maanden ago | 0

Answered
Insulindemo_Change of numerical values in some parameters are not reflected in the simulation
Hi Juliana, Yes, you can change these parameters. However, the values on the parameters themselves are replaced by any values s...

6 maanden ago | 0

| accepted

Answered
How to get rid of "Integration Tolerance Not Met"?
If you simulate from the command line, you should see a warning that infinite or NaN (not-a-number) values occur during the simu...

7 maanden ago | 0

Answered
value of Stomach Glu After Dosing_insulindemo
I believe you are referring to the value of 125 in the variant named "Type 2 diabetic", as shown for example on this page. I bel...

7 maanden ago | 1

| accepted

Answered
Cannot parse function hints
When I do something similar in my installation of MATLAB version R2021a, I get a little popup that says "No completions found". ...

7 maanden ago | 0

Answered
Nucleotides import- not from database
Based on the information you've provided, I would import the data directly from Excel as you currently have it formatted. You ca...

8 maanden ago | 0

| accepted

Answered
How to fit an observable in a SimBiology model using sbiofitmixed function?
HI Budhaditya Chatterjee, This looks like a bug that someone else reported to me a few days ago. The bug is triggered whenever ...

8 maanden ago | 0

| accepted

Answered
lsqnonlin multiple dataset optimisation
You can use lsqnonlin with or without SimBiology. If you want to do this without SimBiology, you need to write a function that t...

8 maanden ago | 0

Answered
Events during the fitting in Simbiology
Yes, all active events will be used during simulations, including simulations performed while doing NLME estimation.

9 maanden ago | 0

| accepted

Answered
SImbiology: access "Initial Conditions" (not InitialValues)
As you discovered, getequations is intended as a textual report and is not well suited for programmatic access to initial values...

9 maanden ago | 0

Answered
In Online Matlab under App menu, Signal Analyzer not working?
The Signal Analyzer App is not supported with MATLAB Online. You will need to use the desktop version of MATLAB if you need acce...

9 maanden ago | 2

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