System and method for complex schedule generation

• US 7,155,399 B2
• Filed: 04/03/2001
• Issued: 12/26/2006
• Est. Priority Date: 04/03/2001
• Status: Expired due to Fees

• Current Assignee: Verint Americas Incorporated (Verint Systems Incorporated)
• Original Assignee: Witness Systems Incorporated (Verint Systems Incorporated)
• Inventors: Andre, David, Uckun, Serdar, Nourbakhsh, Illah
• Primary Examiner(s): Jeanty, Romain
• Assistant Examiner(s): Sterrett, Jonathan G
• Application Number:
  US09/825,589
• Publication Number:
  US 20020143597A1
• Time in Patent Office: 2,093 Days
• Field of Search: 709/223, 705 8- 10, 705/7, 705/11
• US Class Current: 705/7.14
• CPC Class Codes: G06Q 10/06311 Scheduling, planning or task assignment for a person or group
• CPC Class Codes: G06Q 10/063112 Skill-based matching of a person or a group to a task
• CPC Class Codes: G06Q 10/063116 Schedule adjustment for a person or group
• CPC Class Codes: G06Q 10/06312 Adjustment or analysis of established resource schedule, e.g. resource or task levelling, or dynamic rescheduling
• CPC Class Codes: G06Q 10/06375 Prediction of business process outcome or impact based on a proposed change
• CPC Class Codes: G06Q 10/1097 Task assignment
• CPC Class Codes: H04M 3/5233 Operator skill based call distribution

Abstract

A system and method for generating a schedule for multiple employees in a complex environment. In one embodiment, the method includes generating a schedule for multiple employees with varying skill sets for a time period, wherein the plurality of employees have varying overlapping skill sets that enable them to perform various tasks, and wherein employees are shared across tasks within the time period. In one embodiment, the method includes receiving a plurality of user inputs to a scheduling program, including a number of employee designations that each refer to a unique employee, and a number of skill sets that each correspond to one of the employee designations. The method further includes receiving a user input that changes the number of employee designations by indicating at least one changed employee, and estimating an effect of the at least one changed employee on effective staffing levels for each of the various tasks. The method further includes generating estimated effective staffing levels for each of the various tasks.

Claims

1. A computer-implemented method for generating a schedule for a plurality of employees with varying skill sets for a time period, wherein the plurality of employees have varying overlapping skill sets that enable them to perform various tasks, and wherein employees are shared across tasks within the time period, the method comprising:

receiving a plurality of user inputs to a scheduling program, including a number of employee designations each of which refers to a unique employee, and a number of skill sets each of which corresponds to one of the employee designations;

during the method for generating the schedule, determining an effect on the schedule of an incremental change to the plurality of user inputs, including;

receiving a user input that changes the number of employee designations by indicating at least one changed employee,

estimating an effect of the at least one changed employee on effective staffing levels for each of various tasks, wherein the estimating uses as an input a skill set associated with the at least one changed employee,

determining whether to simulate the schedule based at least in part on an adaptive algorithm, and

generating estimated effective staffing levels for each of the various tasks; and

dividing the method such that the method is performed on multiple parallel processors comprising, dividing a schedule into time intervals such that a schedule for each of the time intervals is processed by a different processor.

2. The method of claim 1 wherein the user input that changes the number of employee designations has an effect chosen from a group including adding at least one employee designation and subtracting at least one employee designation.

3. The method of claim 1 further comprising, determining a number of changes that can be made to the schedule during the scheduling method without simulating a proposed schedule, wherein determining includes comparing a predetermined amount of allowed error and a cumulative error that results from estimating.

4. The method of claim 3, wherein estimating comprises:

calculating a total effective work a changed employee will perform;

scaling each task by at least one predetermined factor; and

adjusting a work distribution for every unique employee other than the changed employee based upon the total effective work the changed employee will perform.

5. The method of claim 4, further comprising distributing the changed employee'"'"'s effective work across the plurality of tasks.

6. The method of claim 4, wherein the at least one predetermined factor includes a measure of average time to handle a subtask divided by a number of subtasks per time interval, and a measure of how much work remains in a task based upon results of a previous simulation.

7. The method of claim 4, wherein calculating a total effective work a changed employee will perform comprises applying a function to:

a number of skills of the changed employee;

proficiencies of the changed employee; and

priorities of the changed employee.

8. The method of claim 4, wherein adjusting the work distribution for every unique employee other than the changed employee includes adjusting an effective contribution to each task worked by one of the other unique employees by a factor reflecting that a different amount of work will be required for tasks worked by the changed employee.

9. The method of claim 1 wherein the schedule is for staffing a call center, and wherein the plurality of employees comprises a plurality of agents.

10. The method of claim 6, wherein the schedule is for staffing a call center, wherein the plurality of employees comprises a plurality of agents, a task comprises a call queue, and a subtask comprises a call.

11. The method of claim 10, wherein the varying skill sets include multiple skills for each agent, and wherein each agent may work on multiple call queues in one time period.

12. A computer-implemented method for generating a schedule for a plurality of employees with varying skill sets for a time period, wherein the plurality of employees have varying overlapping skill sets that enable them to perform various tasks, and wherein employees are shared across tasks within the time period, the method comprising:

receiving a plurality of user inputs to a scheduling program, including a number of employee designations each of which refers to a unique employee, and a number of skill sets each of which corresponds to one of the employee designations;

during the method for generating the schedule, determining an effect on the schedule of an incremental change to the plurality of user inputs, including;

receiving a user input that changes the number of employee designations by indicating at least one changed employee,

estimating an effect of the at least one changed employee on effective staffing levels for each of various tasks, wherein the estimating uses as an input a skill set associated with the at least one changed employee,

determining whether to simulate the schedule based at least in part on an adaptive algorithm, and

generating estimated effective staffing levels for each of the various tasks; and

dividing the method such that the method is performed on multiple parallel processors comprising, performing the scheduling process on one processor, and performing simulation on multiple different processors.

13. A system for generating a schedule for a plurality of employees with varying skill sets for a time period, wherein the plurality of employees have varying overlapping skill sets that enable them to perform various tasks, and wherein employees are shared across tasks within the time period, the system comprising:

at least one server comprising at least one storage device; and

at least one client processor coupled to the server through a network, wherein the client processor is coupled to a plurality of storage devices, including a storage device that stores instructions that, when executed, cause the at least one client processor to,

receive a plurality of user inputs to a scheduling program, including a number of employee designations each of which refers to a unique employee, and a number of skill sets each of which corresponds to one of the employee designations, and

during execution of the scheduling program, determine an effect on the schedule of an incremental change to the plurality of user inputs, including;

receive a user input that changes the number of employee designations by indicating at least one changed employee,

estimate an effect of the at least one changed employee on effective staffing levels for each of various tasks, including estimating using as an input a skill set associated with the at least one changed employee,

determine whether to simulate the schedule based at least in part on an adaptive algorithm, and

generate estimated effective staffing levels for each of the various tasks,

wherein the instructions, when executed, further cause the at least one processor to divide the method such that the method is performed on multiple parallel processors comprising, dividing a schedule into time intervals such that a schedule for each of the time intervals is processed by a different processor.

14. The system of claim 13 wherein the storage device that stores the instructions is accessed by the at least one processor through the network.

15. The system of claim 14, wherein the storage device that stores the instructions is the at least one storage device of the server.

16. The system of claim 13, wherein the user input that changes the number of employee designations has an effect chosen from a group including adding at least one employee designation and subtracting at least one employee designation.

17. The system of claim 13 wherein the instructions, when executed, further cause the at least one processor to determine a number of changes that can be made to the schedule during the scheduling process without simulating a proposed schedule, wherein determining includes comparing a predetermined amount of allowed error and a cumulative error that results from estimating.

18. The system of claim 17, wherein the instructions, when executed, further cause the at least one processor to:

calculate a total effective work a changed employee will perform;

scale each task by at least one predetermined factor; and

adjust a measure of effective work for every unique employee other than the changed employee based upon the total effective work the changed employee will perform.

19. The system of claim 18, further comprising distributing the changed employee'"'"'s effective work across the plurality of tasks.

20. The system of claim 18, wherein the at least one predetermined factor includes a measure of average time to handle a subtask divided by a number of subtasks per time interval, and a measure of how much work remains in a task based upon results of a previous simulation.

21. The system of claim 18, wherein calculating a total effective work a changed employee will perform comprises applying a function to:

a number of skills of the changed employee;

proficiencies of the changed employee; and

priorities of the changed employee.

22. The system of claim 18, wherein adjusting the work distribution for every unique employee other than the changed employee includes adjusting an effective contribution to each task worked by one of the other unique employees by a factor reflecting that a different amount of work will be required for tasks worked by the changed employee.

23. The system of claim 13 wherein the schedule is for staffing a call center, and wherein the plurality of employees comprises a plurality of agents.

24. The system of claim 20, wherein the schedule is for staffing a call center, wherein the plurality of employees comprises a plurality of agents, a task comprises a call queue, and a subtask comprises a call.

25. The system of claim 24, wherein the varying skill sets include multiple skills for each agent, and wherein each agent may work on multiple call queues in one time period.

26. A system for generating a schedule for a plurality of employees with varying skill sets for a time period, wherein the plurality of employees have varying overlapping skill sets that enable them to perform various tasks, and wherein employees are shared across tasks within the time period, the system comprising:

at least one server comprising at least one storage device; and

at least one client processor coupled to the server through a network, wherein the client processor is coupled to a plurality of storage devices, including a storage device that stores instructions that, when executed, cause the at least one client processor to,

receive a plurality of user inputs to a scheduling program, including a number of employee designations each of which refers to a unique employee, and a number of skill sets each of which corresponds to one of the employee designations, and

during execution of the scheduling program, determine an effect on the schedule of an incremental change to the plurality of user inputs, including;

receive a user input that changes the number of employee designations by indicating at least one changed employee,

estimate an effect of the at least one changed employee on effective staffing levels for each of various tasks, including estimating using as an input a skill set associated with the at least one changed employee,

determine whether to simulate the schedule based at least in part on an adaptive algorithm, and

generate estimated effective staffing levels for each of the various tasks,

wherein the instructions, when executed, further cause the at least one processor to divide the method such that the method is performed on multiple parallel processors comprising, performing the scheduling process on one processor, and performing simulation on multiple different processors.

27. An electromagnetic medium containing executable instructions which, when executed in a processing system, cause the system to generate a schedule for a plurality of employees with varying skill sets for a time period, wherein generating the schedule comprises:

receiving a plurality of user inputs to a scheduling program, including a number of employee designations each of which refers to a unique employee, and a number of skill sets each of which corresponds to one of the employee designations; and

during execution of the scheduling program, determining an effect on the schedule of an incremental change to the plurality of user inputs, including;

receiving a user input that changes the number of employee designations by indicating at least one changed employee;

estimating an effect of the at least one changed employee on effective staffing levels for each of various tasks, wherein the estimating uses as an input a skill set associated with the at least one changed employee;

determining whether to simulate the schedule based at least in part on an adaptive algorithm; and

generating estimated effective staffing levels for each of the various tasks

wherein generating the schedule further comprises dividing the method such that the method is performed on multiple parallel processors comprising, dividing a schedule into time intervals such that a schedule for each of the time intervals is processed by a different processor.

28. The electromagnetic medium of claim 27, wherein the user input that changes the number of employee designations has an effect chosen from a group including adding at least one employee designation and subtracting at least one employee designation.

29. The electromagnetic medium of claim 27, wherein generating the schedule further comprises, determining a number of changes that can be made to the schedule during the scheduling process without simulating a proposed schedule, wherein determining includes comparing a predetermined amount of allowed error and a cumulative error that results from estimating.

30. The electromagnetic medium of claim 29, wherein estimating comprises:

calculating a total effective work a changed employee will perform;

scaling each task by at least one predetermined factor; and

adjusting a work distribution for every unique employee other than the changed employee based upon the total effective work the changed employee will perform.

31. The electromagnetic medium of claim 30, wherein generating the schedule further comprises distributing the changed employee'"'"'s effective work across the plurality of tasks.

32. The electromagnetic medium of claim 30, wherein the at least one predetermined factor includes a measure of average time to handle a subtask divided by a number of subtasks per time interval, and a measure of how much work remains in a task based upon results of a previous simulation.

33. The electromagnetic medium of claim 30, wherein calculating a total effective work a changed employee will perform comprises applying a function to:

a number of skills of the changed employee;

proficiencies of the changed employee; and

priorities of the changed employee.

34. The electromagnetic medium of claim 30, wherein adjusting the work distribution for every unique employee other than the changed employee includes adjusting an effective contribution to each task worked by one of the other unique employees by a factor reflecting that a different amount of work will be required for tasks worked by the changed employee.

35. The electromagnetic medium of claim 27, wherein the schedule is for staffing a call center, and wherein the plurality of employees comprises a plurality of agents.

36. The electromagnetic medium of claim 34, wherein the schedule is for staffing a call center, wherein the plurality of employees comprises a plurality of agents, a task comprises a call queue, and a subtask comprises a call.

37. The electromagnetic medium of claim 36, wherein the varying skill sets include multiple skills for each agent, and wherein each agent may work on multiple call queues in one time period.

38. An electromagnetic medium containing executable instructions which, when executed in a processing system, cause the system to generate a schedule for a plurality of employees with varying skill sets for a time period, wherein generating the schedule comprises:

receiving a plurality of user inputs to a scheduling program, including a number of employee designations each of which refers to a unique employee, and a number of skill sets each of which corresponds to one of the employee designations; and

during execution of the scheduling program, determining an effect on the schedule of an incremental change to the plurality of user inputs, including;

receiving a user input that changes the number of employee designations by indicating at least one changed employee;

estimating an effect of the at least one changed employee on effective staffing levels for each of various tasks, wherein the estimating uses as an input a skill set associated with the at least one changed employee;

determining whether to simulate the schedule based at least in part on an adaptive algorithm; and

generating estimated effective staffing levels for each of the various tasks,

wherein generating the schedule further comprises dividing the method such that the method is performed on multiple parallel processors comprising, performing the scheduling process on one processor, and performing simulation on multiple different processors.