History
KBE essentially was a complementary development to CAx and can be dated from the 1980s (See Also, ICAD). CAx has been developing along with the computer after making large strides in the 1970s.
KBE technologies suffered a downslide during AI Winter. While KBE had sufficient success stories that sustained it long enough into the 1990s, very high expectations and the inability to meet them with KBE resulted in it being considered obsolete in a way similar to LISP AI designs.
KBE, as implemented with ICAD can be thought of as an advanced form of computer applications (in some forms with an extreme end-user computing flavor) that support PLM and CAx.
Read more about this topic: Knowledge-based Engineering
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