Context-Aware Computing

3Addressing Context Uncertainty

Abstract: Context data sensed from external environments and internal users is largely uncertain due to faulty sensors and lack of precision in computation and measurement. Uncertain context distinguishes from certain context in the degree of belief or confidence in the occurrence of the context. If certainty is referred to as a perception or belief that a certain context holds, uncertainty indicates a lack of confidence or trust in an article of knowledge about the holding of the context. Context uncertainty complicates and affects computation and decision-making in a number of unfavorable aspects. This chapter reviews uncertainty processing theories and practices in diverse fields, ranging from economy, engineering, ...