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### Error - Modified Federov algorithm

Posted: Fri Jan 03, 2020 7:10 pm
We are trying to apply a Modified Federov algorithm for a choice experiment. Using the manual we create an excel sheet with the "candidates" and develop the following syntax:

Design
;alts = HOME, WORK, SHOPPING, LEISURE, OTHERS, FAST
;rows = 30
;block = 3
;eff=(mnl,d)
;con
;alg = mfederov(candidates=partial_design.csv)

;model:
U(HOME) = b4[2]* CI_FREE_HOME[1,-9999] + b5[0.1] * CI_POWER_HOME[3.7,11,-9999] + b6[-4.35] * CI_COST[0.2,0.4,0.6,9999] + b7[0.5] * ECO[0,1,-9999] + b9[-0.1] * WAIT_NO[0,9999]/
U(WORK) = b1[-2.12] + b4 * CI_FREE[0.6,0.8,1,-9999] + b5 * CI_POWER_WORK[3.7,11,22,-9999] + b6 * CI_COST + b7 * ECO + b9 * WAIT_NO/
U(SHOPPING) = b2[-3.37] + b4 * CI_FREE + b5* CI_POWER_SHOPPING[11,22,50,-9999] + b6 * CI_COST + b7 * ECO + b10[-0.1]* WAIT[0,20,9999] /
U(LEISURE) = b2 + b4 * CI_FREE + b5* CI_POWER_OTHERS[11,22,-9999] + b6 * CI_COST + b7 * ECO + b10 * WAIT /
U(OTHERS) = b2 + b4 * CI_FREE + b5* CI_POWER_OTHERS + b6 * CI_COST + b7 * ECO + b10 * WAIT /
U(FAST) = b2 + b4 * CI_FREE_FAST[0.8,1,-9999]+ b8[0.05] * CI_POWER_FAST[50,150,350,-9999] + b6 * CI_COST_FAST[0.4,0.6,0.8,9999] + b7 * ECO + b11[-0.1]* WAIT_FAST[5,10,20,9999]
\$

Unfortunately, we cannot run the syntax and become always the following error message (the excel sheet with the candidates is in the same folder as the syntax):

"Error: The 'candidates' parameter of the Modified Federov algorithm is neither specified as a valid number, nor a valid file name or path."

Is there something wrong with the syntax-definition of the algorithm?

Best regards
Viktoriya

### Re: Error - Modified Federov algorithm

Posted: Fri Jan 03, 2020 7:33 pm