Issue With Syntax For BARON Solver

New to AMPL
1

Hello I am having issues with using BARON to solve an optimization problem. Right now I am receiving errors about syntax errors concerning the use of scientific notation.

Below is the error I am receiving:
[ERROR]
line 32 offset 702
syntax error
context: 1 >>> 9.022e-06 <<<
[ERROR]
line 40 offset 830
syntax error
context: 1 >>> 577.67 <<<
[ERROR]
line 48 offset 952
syntax error
context: 1 >>> 4 <<<
[WARNING]
line 63 offset 1322
variable in = expression
context: param R_S := (1 - (1 - exp(-lambda_T*t)) * product {i in SENSORS} (1 - >>> exp(-lambda_S[i]*t))^(x[i]*sensor_set_size[i])); <<<
[WARNING]
line 66 offset 1489
variable in = expression
context: param R_v {j in WORKSTATIONS} := 1 - (1 - exp(-(lambda_H + lambda_N)*t))^(1 + >>> y[j]); <<<
Traceback (most recent call last):
File “c:\Users\dgoodma5\Desktop\AAMEN Project\Optimizer Code\BARON_Optimizer_V1.py”, line 83, in
ampl.eval(f"“”
File “amplpy/ampl.pyx”, line 356, in amplpy.ampl.AMPL.eval
File “amplpy/ampl.pyx”, line 709, in amplpy.ampl.AMPL.set_error_handler.ErrorHandlerWrapper.check
File “amplpy/ampl.pyx”, line 690, in amplpy.ampl.AMPL.set_error_handler.ErrorHandlerWrapper.error
File “amplpy/errorhandler.pxi”, line 43, in amplpy.ampl.ErrorHandler.error
amplpy.ampl.AMPLException: line 32 offset 702
syntax error
context: 1 >>> 9.022e-06 <<<

1 Like
2

Hello there,

Could you share the code? It’s hard to guess what’s wrong only with the error output

3

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