Definitions given by earlier works and standard dictionaries agree on the key idea that context describe situation. This definition clearly states that context is always bound to an entity. The entity itself is regarded as something that is relevant to the interaction between a user and an application. The user-application relationship is rooted in the traditional notion of an application, but not limited to it.
Dey and Abowd (2000) have also confirmed this by defining context as:
‘‘Any information that can be used to characterize the situation of an entity. An entity is a person, a place, or a physical or computational object that is considered relevant to the interaction between a user and an application, including the user and application themselves.’’
Winograd (2001) indicated that definitions like this are intended to be adequately general to cover the work that has been done on context-based interactions. He however argues that in using open-ended phrases such as ‘‘any information’’ and ‘‘characterize’’, it becomes so broad that context covers everything without boundary. According to Winograd, ‘‘something is context because of the way it is used in interpretation, not due to its inherent properties. The voltage on the power lines is a context if there is some action by the user and/or computer whose interpretation is dependent on it, but otherwise is just part of the environment.’’
Pascoe defines context as “Context could be generally described as the subset of physical and conceptual states of interest to a particular entity.” Contextual information is related to a certain entity.
Context Scenario Example :
[ Image Source : Vectorstock.com]
Context Title : Class Room Teaching
Location : Location : Room No :101 , ABC School , Mysuru , India ,
Activities : Teaching Learning , Interaction and Discussion
Teacher : Mary Pal
Subject : Psychology Topic : Child Psychology , Class No: 21 , Number of Students : 3
Students Details :[ Name , Roll No , Age , Sex, Rank , Strength , Weakness , Mood ,Emotional Intelligence , IQ , SIQ, Health Report , Attendance Status , etc.]
Time : 10 AM , Date : 5/5/2020
Temperature : Normal , Light Intensity : Bright
Other Details : User Intention , Mental Status of Student and Teacher , Students Understanding Level, Current States of Notice Board , Bell , Notification Gadget, Any Devices , Any Sensors , furniture ,door , windows , curtains , Fan/AC , etc. present in the class room .
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