Soar - Working Memory

Description

• Soar's working memory consists of a set of (Object ^attribute value) elements
• Value may be a symbolic constant, a number, a string, or an Object
• The context stack consists of the context objects currently in working memory: all goals, problem spaces, states, and operators.
• All context elements are attached to a goal, and all goals except the top goal point to a supergoal, imposing a linear order on the context stack
• There is some chain of elements from a context object to every element in working memory
• If this chain is broken the element is removed from working memory
• The Decision Cycle can examine and modify the entire context stack.
• The preference memory determines which elements enter and leave working memory