The Computer For The 21st Century

1100 Words5 Pages
2.6 Context awareness “The most profound technologies are those that disappear. They weave themselves into the fabric of everyday life until they are indistinguishable from it.”, said Mark Weiser is his seminal paper “The computer for the 21st century” in 1991 (Weiser, 1991). His vision of an environment saturated with computing and communication capability with humans gracefully integrated, laid the foundation for Ubiquitous or Pervasive computing. His vision was ahead of its time then. Today, technology permits us to have this kind of environment. For a pervasive system which must be invisible or minimally intrusive, it must be context-aware. Context is a complex phenomenon and is used differently in various disciplines. For example, in linguistics, it refers to the constraints of the communicative situation which influences the use of a language (Fetzer, 1997). In psychology, it represents the change in a user’s situation which affects the cognitive processes such as reasoning etc. (Smith, 1988). In computer science, the term context was first used by Guha (1992) and McCarthy (1993) who defined context as a means of partitioning a knowledge base into manageable sets or logical constructs that facilitate reasoning activities. Schilit and Theimer (1992) first introduced the notion of “context-aware”, where they refer to context as location, identities of nearby people and objects, and changes to those objects. In an extended work, Schilit, Adams and Want (1994) define
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