Exam 8: Evolutionary Solver: an Alternative Optimization Procedure

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Which of the following is true regarding Evolutionary Solver?

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Exhibit 8-4 Steve the salesman must travel along a route from his home in Denver that visits all of the cities shown below exactly once before returning home.The mileage between each city on the route is also listed below: Exhibit 8-4 Steve the salesman must travel along a route from his home in Denver that visits all of the cities shown below exactly once before returning home.The mileage between each city on the route is also listed below:   -Refer to Exhibit 8-4.Suppose Steve's company decides to locate a second salesperson in the region.Steve will now cover only Denver,Albuquerque,El Paso,Phoenix and Salt Lake City.The second salesperson will cover Los Angeles,San Diego,San Francisco,Portland,Seattle and Las Vegas.Formulate and solve shortest-path models for both salespersons.Is the total mileage for both salespersons more or less than in the case where Steve is the only salesperson? -Refer to Exhibit 8-4.Suppose Steve's company decides to locate a second salesperson in the region.Steve will now cover only Denver,Albuquerque,El Paso,Phoenix and Salt Lake City.The second salesperson will cover Los Angeles,San Diego,San Francisco,Portland,Seattle and Las Vegas.Formulate and solve shortest-path models for both salespersons.Is the total mileage for both salespersons more or less than in the case where Steve is the only salesperson?

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The shortest paths are shown below.The distance is more in this case (the extra distance is because both salespersons need to return home at the end of their routes). The shortest paths are shown below.The distance is more in this case (the extra distance is because both salespersons need to return home at the end of their routes).

Exhibit 8-3 A standardized testing agency would like to understand the role of tests in admission decisions at top business schools.It is particularly interested in the relative roles played by the GRE and the undergraduate GPA in the admissions process.It has gathered the following data for 50 randomly sampled applicants (which has been sorted by Admitted): Exhibit 8-3 A standardized testing agency would like to understand the role of tests in admission decisions at top business schools.It is particularly interested in the relative roles played by the GRE and the undergraduate GPA in the admissions process.It has gathered the following data for 50 randomly sampled applicants (which has been sorted by Admitted):   -Refer to Exhibit 8-3.Use a discriminant analysis to develop a classification model.What is the best percentage correctly classified obtained with your model? -Refer to Exhibit 8-3.Use a discriminant analysis to develop a classification model.What is the best percentage correctly classified obtained with your model?

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The classification matrix and percent correct obtained by Evolutionary Solver are shown below: The classification matrix and percent correct obtained by Evolutionary Solver are shown below:

Mutations are useful for getting a genetic algorithm "unstuck".

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The data used to classify members in a discriminant analysis is called a:

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The number of possible paths in a shortest path problem with n locations is:

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Which of the following is not a form of non-linear pricing?

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Evolutionary Solver is primarily used to solve models where:

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Exhibit 8-3 A standardized testing agency would like to understand the role of tests in admission decisions at top business schools.It is particularly interested in the relative roles played by the GRE and the undergraduate GPA in the admissions process.It has gathered the following data for 50 randomly sampled applicants (which has been sorted by Admitted): Exhibit 8-3 A standardized testing agency would like to understand the role of tests in admission decisions at top business schools.It is particularly interested in the relative roles played by the GRE and the undergraduate GPA in the admissions process.It has gathered the following data for 50 randomly sampled applicants (which has been sorted by Admitted):   -Refer to Exhibit 8-3.Write out your model and interpret your results.Do the results make sense? -Refer to Exhibit 8-3.Write out your model and interpret your results.Do the results make sense?

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The initial set of chromosomes generated by a genetic algorithm is called the population.

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Exhibit 8-1 Six storage bins on a railroad train are available for shipment of grain from Kansas City to Dallas.Three of the bins can hold 1500 bushels of grain each,while the other three can hold 750 bushels each.There are four types of grain that can be shipped,and the amount demanded,unit shortage cost and maximum allowable shortage for each are: Exhibit 8-1 Six storage bins on a railroad train are available for shipment of grain from Kansas City to Dallas.Three of the bins can hold 1500 bushels of grain each,while the other three can hold 750 bushels each.There are four types of grain that can be shipped,and the amount demanded,unit shortage cost and maximum allowable shortage for each are:   If the maximum allowable shortage is exceeded for any grain,a $100/bushel penalty is incurred. -Refer to Exhibit 8-1.How should the train be loaded to minimize shortage and penalty costs? If the maximum allowable shortage is exceeded for any grain,a $100/bushel penalty is incurred. -Refer to Exhibit 8-1.How should the train be loaded to minimize shortage and penalty costs?

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In Evolutionary Solver,the initial population is chosen randomly,so the starting solution you enter in the changing cells is irrelevant.

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Which of the following is not one of the Excel functions that necessitate the use of Evolutionary Solver to obtain solutions?

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Exhibit 8-4 Steve the salesman must travel along a route from his home in Denver that visits all of the cities shown below exactly once before returning home.The mileage between each city on the route is also listed below: Exhibit 8-4 Steve the salesman must travel along a route from his home in Denver that visits all of the cities shown below exactly once before returning home.The mileage between each city on the route is also listed below:   -Refer to Exhibit 8-4.Formulate and solve a shortest-path model using Evolutionary Solver.What is the shortest distance Steve can travel and visit all cities? What is the route? -Refer to Exhibit 8-4.Formulate and solve a shortest-path model using Evolutionary Solver.What is the shortest distance Steve can travel and visit all cities? What is the route?

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Crossovers are rare as a genetic algorithm is generating chromosomes for the next generations.

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Exhibit 8-2 A television station has commercials of the following lengths (in seconds): 15,20,25,30,40,45,50,and 60.The commercials must be assigned to 90-second breaks.If a commercial break exceeds 90 seconds,a penalty cost is incurred.Station managers have established a penalty of $100 (per second)if the maximum limit is exceeded.Moreover,station owners want commercial breaks that are at least 65 seconds in duration.If any break fails to achieve this minimum duration,then a $1000 penalty (per occurrence)is charged. -Refer to Exhibit 8-2.Explain why this problem typically requires Evolutionary Solver to obtain a solution.

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Exhibit 8-4 Steve the salesman must travel along a route from his home in Denver that visits all of the cities shown below exactly once before returning home.The mileage between each city on the route is also listed below: Exhibit 8-4 Steve the salesman must travel along a route from his home in Denver that visits all of the cities shown below exactly once before returning home.The mileage between each city on the route is also listed below:   -Refer to Exhibit 8-4.Suppose Steve moves to Los Angeles.What is the shortest distance in this case? -Refer to Exhibit 8-4.Suppose Steve moves to Los Angeles.What is the shortest distance in this case?

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The objective function in a genetic algorithm is called a:

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A discriminant score is a weighted combination of the data for each member of a population,which is used to classify the members into groups.

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A traveling salesman problem with a starting city and 10 other cities that must be visited has 1,826,800 possible solutions.

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