System And Method For Optimizing Simulation Of A Discrete Event Process Using Business System Data

• US 20070288212A1
• Filed: 05/25/2007
• Published: 12/13/2007
• Est. Priority Date: 08/19/2002
• Status: Abandoned Application

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Yang, Dan, Johnson, Christopher, Dingman, Brian, Messmer, Richard
• Application Number:
  US11/753,868
• Publication Number:
  US 20070288212A1
• Time in Patent Office: Days
• US Class Current: 703/6
• CPC Class Codes: G06Q 10/00 Administration; Management
• CPC Class Codes: G06Q 10/06 Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling

Abstract

The invention discloses simulation of a process of discrete events or tasks having a plurality of available resources associated therewith. A database stores a plurality of models, each including a plurality of one or more entity, task, and resource parameter, and dependencies and relationships. A model application communicates with the database and is configured to receive commands from a user, to retrieve one of the plurality of models and the corresponding plurality of one or more entity, task, and resource parameter in response to a user command, to receive input data corresponding to one or more entity, task, and resource parameter from a business database system, and to generate a simulation model based on the business database system and the input data. An optimizing application in communication with the model application and is configured to receive commands from a user, to select one or more entity, task, and resource parameter of the simulation model with respect to an objective function, to define bounds of the one or more entity, task, and resource parameter selected, to generate values for the objective function based on the one or more of the entity, task, and resource parameter selected, and to generate financial performance data based on the values generated for the objective function. A server performs a simulation of the process by processing the simulation model and generates an output data file containing output data representative thereof. The objective function comprises a combination of system financial performance measures (e.g., operational margin) and process performance measures (e.g., cycle time, throughput, utilization.

Claims

1. A healthcare process simulation system, the system including:

a user interface adapted to receive input from a user and adapted to provide output to the user;

a database adapted to store at least one simulation model;

a modeling component adapted to allow the user to generate a simulation model using the user interface, wherein the simulation model is stored in the database;

an optimization component adapted to determine an optimized simulation model based at least in part on the simulation model, one or more decision variables selected by the user, and an objective function; and

a simulation engine adapted to simulate a process based at least in part on the simulation model and input from the user through the user interface, and wherein the simulation engine is adapted to provide output about the simulation to the user through the user interface.

2. The system of claim 1, wherein the database includes a model template, wherein the simulation model is based at least in part on the model template.

3. The system of claim 2, wherein the model template is based at least in part on a previously simulated model.

4. The system of claim 2, wherein the model template is a predefined representation of tasks for a process.

5. The system of claim 1, wherein the simulation model includes variable dependencies based at least in part on the objective function.

6. The system of claim 1, wherein the optimized simulation model is further based on stochastic optimization of the one or more decision variables.

7. The system of claim 1, wherein the healthcare process is a medical imaging process.

8. The system of claim 1, wherein the healthcare process is a clinical workflow.

9. The system of claim 1, wherein the healthcare process is practice management.

10. A method for optimizing a simulation model of a healthcare process, the method including:

presenting a plurality of decision variables to a user, wherein the plurality of decision variables are based at least in part on a simulation model;

receiving a set of selected decision variables, wherein the set of selected decision variables includes at least one of the plurality of decision variables, and wherein the set of selected decision variables is based at least in part on an objective function;

receiving a start value and at least one bound for each decision value in the set of selected decision values;

receiving a number of iterations from the user;

simulating the simulation model based at least in part on the set of selected decision variables, the associated bounds, and the number of iterations to determine an optimized simulation model; and

presenting an optimization report to the user, wherein the optimization report is based on the optimized simulation model.

11. The method of claim 10, wherein the simulation model includes variable dependencies.

12. The method of claim 11, wherein the variable dependencies are based at least in part on the objective function.

13. The method of claim 10, further including receiving a time of iterations from the user.

14. The method of claim 10, further including an output level from the user.

15. The method of claim 10, wherein the optimization report includes object values and decision variable amounts.

16. The method of claim 10, wherein the simulation step is further based on stochastic optimization.

17. The method of claim 10, wherein the optimized simulation mode includes values for the selected decision variables that maximize the objective function.

18. The method of claim 10, wherein the objective function is a utilization rate.

19. The method of claim 10, wherein the optimized simulation model is deployable in a decisioning system.

20. A computer-readable medium including a set of instructions for execution on a computer, the set of instructions including:

a user interface routine configured to receive input from a user and to provide output to the user;

a database routine configured to store at least one simulation model;

a modeling routine configured to allow the user to generate a simulation model using the user interface routine, wherein the simulation model is stored by the database routine;

an optimization routine configured to determine an optimized simulation model based at least in part on the simulation model, one or more decision variables selected by the user, and an objective function; and

a simulation engine routine configured to simulate a process based at least in part on the simulation model and input from the user.

21. A process simulation system, the system including:

a workflow system including a workflow engine and a workflow database;

a database adapted to store a simulation model, wherein the simulation model at least in part models at least one process of the workflow system;

a simulation engine adapted to simulate the at least one process based at least in part on the simulation model; and

an optimization component adapted to determine an optimized simulation model based at least in part on the simulation model and data from a workflow system using the simulation engine, and wherein the workflow system is adjusted based at least in part on the optimized simulation model.

22. The system of claim 21, wherein the workflow system includes a medical imaging process.

23. The system of claim 21, wherein the workflow system includes a clinical workflow.

24. The system of claim 21, wherein the workflow system includes practice management.

25. The system of claim 21, wherein the optimization component utilizes a forecast determined by the simulation engine.

26. The system of claim 25, wherein the workflow system is adjusted based on a gap between the forecast and data in the workflow database.