Methods and apparatus for multi-variable work assignment in a call center

• US 6,661,889 B1
• Filed: 01/18/2000
• Issued: 12/09/2003
• Est. Priority Date: 01/18/2000
• Status: Expired due to Term

• Current Assignee: Avaya Incorporated
• Original Assignee: Avaya Technology Corporation Miami Lakes FLA US
• Inventors: Kohler, Joylee E., Mathews, Eugene P., Foster, Robin H., Flockhart, Andrew Derek
• Primary Examiner(s): TIEU, BENNY QUOC
• Application Number:
  US09/484,099
• Time in Patent Office: 1,421 Days
• Field of Search: 379/265.02, 379/265.05, 379/265.06, 379/265.1, 379/265.11, 379/265.12, 379/266-1-2, 379/266-5-2, 379/309
• US Class Current: 379/265.05
• CPC Class Codes: H04M 3/5232 Call distribution algorithms
• CPC Class Codes: H04M 3/5233 Operator skill based call distribution
• CPC Class Codes: H04M 3/5238 with waiting time or load prediction arrangements

Abstract

A multi-variable work assignment process is used to assign work items, such as voice calls, e-mails and other communications or tasks, to agents in a call center. The multi-variable work assignment process determines whether values of a particular variable characterizing the work items fall within a designated range, and if so utilizes at least one additional variable for making the work assignment decision. The work assignment process may also or alternatively consider a weighted combination of multiple variables in making the work assignment decision. Examples of variables which may be used in the multi-variable assignment process include current wait time, service objective, skill preference, skill level, anticipated wait time, predicted wait time, etc. The invention may be implemented in a one-to-many work assignment process which selects one of a set of agents available for handling a particular work item, in a many-to-one work assignment process which selects one of a set of work items for handling by a particular available agent, or in a many-to-many work assignment process in which multiple agents are each considered simultaneously for handling multiple work items.

Claims

1. A method of assigning work items to agents in a call center, the method comprising the steps of:

determining if values of a particular variable regarding at least a subset of the work items fall within a designated range as part of a work assignment decision; and

utilizing at least one additional variable for making the work assignment decision if the values of the particular variable are within the designated range;

wherein the determining step further comprises applying an equivalency test to the values of the particular variable;

wherein if the equivalency test indicates that the values do not fall within the designated range, the particular variable is utilized in making the work assignment decision; and

wherein if the equivalency test indicates that the values do fall within the designated range, the additional variable is utilized in place of the particular variable in making the work assignment decision.

2. The method of claim 1 wherein the work assignment decision is based at least in part on a weighted combination of multiple variables.

3. The method of claim 1 wherein the work assignment decision is part of a one-to-many work assignment process involving a single work item in which the process selects one of a plurality of agents available for handling the single work item.

4. The method of claim 1 wherein the work assignment decision is part of a many-to-one work assignment process involving multiple work items in which the process selects one of the many work items for handling by a particular available agent.

5. The method of claim 1 wherein the work assignment decision is part of a many-to-many work assignment process in which multiple agents are each considered simultaneously for handling multiple work items.

6. The method of claim 1 wherein the work item comprises an in-bound or out-bound communication.

7. The method of claim 1 wherein the particular variable comprises a function of a wait time associated with a given work item.

8. The method of claim 7 wherein the particular variable comprises a ratio of a predicted wait time to a service objective for a given communication.

9. The method of claim 1 wherein the at least one additional variable comprises at least one of a current wait time, a service objective, a skill preference, an anticipated wait time, a predicted wait time, a customer satisfaction proficiency score and a revenue score.

10. The method of claim 1 wherein the work assignment decision is based at least in part on skill level associated with the work items, such that each agent is assigned a work item having the highest possible skill level.

11. The method of claim 1 wherein the work assignment decision is based at least in part on a comparison of a desired plan workload with an actual plan workload for each of a plurality of different types of work items and for each of at least a subset of the agents, and wherein the work items are assigned to the agents in a manner which tends to improve alignment of the corresponding actual plan workloads with the desired plan workloads.

12. The method of claim 1 wherein a weighting factor based on skill level is applied to at least one of the particular variable and the additional variable such that the work assignment decision is based at least in part on the applied weighting factors.

13. The method of claim 1 wherein at least one quality measure is determined for each of a plurality of skill levels associated with the work items to be assigned.

14. The method of claim 13 wherein the quality measure comprises at least one of a customer satisfaction proficiency score and a revenue score.

15. The method of claim 13 wherein a function of the quality measure and at least one of the variables is utilized in the work assignment decision.

16. The method of claim 15 wherein the function comprises a product of the quality measure, a skill level weighting factor, and at least one of the variables.

17. The method of claim 1 wherein multiple work items associated with a given skill are considered simultaneously for assignment to the agents.

18. An apparatus for use in assigning work items to agents in a call center, the apparatus comprising:

a processor operative to determine if values of a particular variable regarding at least a subset of the work items fall within a designated range as part of a work assignment decision, and to utilize at least one additional variable for making the work assignment decision if the values of the particular variable are within the designated range; and

a memory coupled to the processor and operative to store information regarding at least a subset of the variables;

wherein the determining operation further comprises applying an equivalency test to the values of the particular variable;

wherein if the equivalency test indicates that the values do not fall within the designated range, the particular variable is utilized in making the work assignment decision; and

wherein if the equivalency test indicates that the values do fall within the designated range, the additional variable is utilized in place of the particular variable in making the work assignment decision.

19. An article of manufacture containing one or more software programs for use in assigning work items to agents in a call center which, when executed in a processor, cause the processor to perform the steps of:

determining if values of a particular variable regarding at least a subset of the work items fall within a designated range as part of a work assignment decision; and

utilizing at least one additional variable for making the work assignment decision if the values of the particular variable are within the designated range;

wherein the determining step further comprises applying an equivalency test to the values of the particular variable;

wherein if the equivalency test indicates that the values do not fall within the designated range, the particular variable is utilized in making the work assignment decision; and

wherein if the equivalency test indicates that the values do fall within the designated range, the additional variable is utilized in place of the particular variable in making the work assignment decision.