Alex, Everybody on planet Earth knows and uses an excellent Knowledge Query Language every day. It's our native language or some other NL that we choose to use or are required to use for some purpose. But KQL is a bad acronym, because it puts too much emphasis on the Q. It's better to emphasize D for dialogue than Q for question. For an overview of the issues, see the slides (and references in them) about Cognitive Memory: http://jfsowa.com/talks/cogmem.pdf The cogmem.pdf slides discuss projects that our old VivoMind company implemented over a dozen years ago, and every one of those projects was specified by customers who paid for the implementations. They weren't toy examples. The bad news is that every one of them required a great deal of work by the VivoMind company to implement them. There wasn't a single universal system that could be tailored by the customers themselves. But there is newer technology that is customizable by anybody, not just the computer scientists. I discussed that issue in a talk I presented at the Knowledge Graph Conference in 2020. (By the way, it was awarded the Best Presentation prize.) And I revised and extended it for the European Semantic Web Conference in June 2020. I later added more slides from other presentations in http://jfsowa.com/talks/eswc.pdf And by the way, I cc'd the Peirce email list because both the cogmem.pdf slides and the eswc.pdf slides build on the logic and semiotic of C. S. Peirce. I discuss that in some detail in the eswc.pdf slides. Peirce called his existential graphs "the logic of the future", and he was right. John
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