Abstract: Personal Assistant(PA) agents arc cognitive agents capable of helping users handle tasks at their workplace.The paper concerned the design of a memory mechanism for PA agents,which leads to fairly complex cognitive agents.Inspired by the idea of Cascbased Rcasoning(CBR) method, a cognitive memory processor was built to monitor and update the memory of PA. A prototype of the PA agents was developed and implemented in our multi-agent platform named OMAS. Several experiments show the memory makes the PA agent more efficient in handling the tasks requested by the user.

Key words: Assistent agent, Case-based reasoning, Memory organization packets