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KEE (Knowledge Engineering Environment) is a frame-based development tool for Expert Systems.〔(An evaluation of expert system development tools )〕 KEE was developed and sold by IntelliCorp. It was first released in 1983 and ran on Lisp Machines. KEE was later ported to Lucid Common Lisp with CLX (X11 interface for Common Lisp). This version was available on various Workstations. On top of KEE several extensions were offered: * Simkit,〔(The SimKit system: knowledge-based simulation and modeling tools in KEE )〕〔(SimKit: a model-building simulation toolkit )〕 a frame-based simulation library * KEEconnection,〔(KEEConnection: a bridge between databases and knowledge bases )〕 database connection between the frame system and relational databases. Frames are called ''Units'' in KEE. Units are used for both individual instances and classes. Frames have ''slots'' and slots have ''facets''. Facets for example describe the expected values of a slot, the inheritance rule for the slot or the value of a slot. Slots can have multiple values. Behavior can be implemented using the message-passing paradigm. KEE provides an extensive graphical user interface to create, browse and manipulate frames. KEE also includes a frame-based rule system. Rules themselves are frames in the KEE knowledge base. Both forward and backward chaining inference is available. KEE supports non-monotonic reasoning through the concepts of ''worlds''. Worlds allow provide alternative slot-values of frames. Through an assumption-based Truth maintenance system inconsistencies can be detected and analyzed.〔(Reasoning with worlds and truth maintenance )〕 ''ActiveImages'' allows graphical displays to be attached to slots of Units. Typical examples are buttons, dials, graphs and histograms. The graphics are also implemented as Units via ''KEEPictures'' - a frame-based graphics library. ==See also== * Expert system * Frame language * Inference engine * IntelliCorp * Knowledge base * Knowledge-based system * Knowledge representation 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Knowledge Engineering Environment」の詳細全文を読む スポンサード リンク
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