Knowledge is represented and communicated by various forms of symbols and codifications. My emphasis is on the semiotic theories of the prescient American scientist, logician, and philosopher of the 19th century, Charles Sanders Peirce, also known as the father of pragmatism. The semiosis is based on the interacting triad of object, sign and interpretant using the trichotomous logics of deduction, induction and abduction, all specific expressions of the three universal Peircean categories of Firstness, Secondness, and Thirdness. Peirce's view of reality bounds the actual things and events of experience with absolute chance, on the one hand, and continuity, on the other. The Peircean approach captures the limits of truth and falsity within the fallible contexts of what we can know and perceive. The Peircean framework provides a modern means for representing knowledge suitable to the ideas of evolution, quantum mechanics, and artificial intelligence. Grounded in the very methods of science, Peircean concepts are a unique and powerful method for representing knowledge to humans and machines alike.
My full biography and publications list are on my blog, AI3:::Adaptive Information, shown under the separate link.