Dynamic Rule Modification Method for Rete-ECA Algorithm

Context-aware services enable users to interact with their environment in more useful ways. Rule-based systems are used for base vehicles for context-aware services due to their powerful capability to represent situations and corresponding actions to be performed. Usually, environments where context-aware services are applied are not static but have somewhat dynamic features. This paper describes a design and implementation of dynamic rule modification method for a Rete-based rule inference engine called Rete-ECA for device control and management. The experiment shows that the rule modification method can be used to accelerate execution when the rule set is complex and more than one device variables are related to rule conditions.