Hi Linas, How do you propose to learn an ontology from the data -- also, what purpose would, in your opinion, the learned ontology serve. Or stated differently, in what way are you thinking to engender higher-level cognitive capabilities via machine learned bundled neuron (and implicit ontologies, perhaps).
thank you, Daniel On Wednesday, 19 April 2017 03:40:47 UTC+3, linas wrote: > > > > On Tue, Apr 18, 2017 at 3:22 PM, Alex <alexand...@gmail.com <javascript:>> > wrote: > >> Maybe we can solve the problem about modelling classes (and using OO and >> UML notions for knowledge representation) with the following (pseudo)code >> >> - We can define ConceptNode "Object", that consists from the set or >> properties and functions >> >> - We can require that any class e.g. Invoice is the inherited from the >> Object: >> IntensionalInheritanceLink >> Invoice >> Object >> >> - We can require that any more specifica class, e.g. VATInvoice is the >> inherited from the more general class: >> IntensionalInheritanceLink >> VATInvoice >> Invoice >> >> - We can require that any instance is inherited from the concrete class: >> ExtensionalInheritanceLinks >> invoice_no_2314 >> VATInvoice >> > > If you wish, you can do stuff like that. opencog per se is agnostic about > how you do this, you can do it however you want. The proper way to do this > is discussed in many places; for example here: > https://en.wikipedia.org/wiki/Upper_ontology > > I'm not particularly excited about building ontologies by hand, its much > more interesting (to me) to understand how they can be learned > automatically, from raw data. > >> >> But I don't know yet what can and what can not be the parent for >> extensional and intensional inheritance. Can an entity be extensionally >> inherited from the more complex object or it can be extensionally inherited >> from empty set-placeholder only. When we introduce notion of set, then the >> futher question always arise - does OpenCog make distinction between sets >> and proper classes? >> > > Why? This "distinction" only matters if you want to implement set theory. > My pre-emptive strike to halt this train of thought is this: Why would you > want to implement set theory, instead of, say, model theory or universal > algebra, or category theory, or topos theory? why the heck would > distinguishing a set-theoretical-set from a set-theoretical-proper-class > matter? (which oh by the way is similar but not the same thing as a > category-theoretic-proper-class...) > > You've got multiple ideas going here, at once: the best way to hand-craft > some ontology; the best theoretical framework to do it in; the philosophy > of knowledge representation in general... and, my personal favorite: how do > I get the machine to do this automatically, without manual intervention? > > >> >> There is second problem as well - there is only one - mixed >> InheritanceLink. One can use SubsetLink for the extensional inheritance >> (still it feels strange), but there is certainly necessary syntactic sugar >> for intensional inheritance, because it is hard to write and read >> SubsetLink of property sets again and again ( >> http://wiki.opencog.org/w/InheritanceLink). >> > > If the machine has learned an ontology with a million subset links in it, > no human being is ever going to read or want to read that network. It'll be > like looking at a bundle of neurons: the best you can do is say "oh wow, a > bundle of neurons!" > > --linas > >> >> -- >> You received this message because you are subscribed to the Google Groups >> "opencog" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to opencog+u...@googlegroups.com <javascript:>. >> To post to this group, send email to ope...@googlegroups.com >> <javascript:>. >> Visit this group at https://groups.google.com/group/opencog. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/opencog/a6d0102e-9ca1-4204-8dd4-75a9fb2ec06b%40googlegroups.com >> >> <https://groups.google.com/d/msgid/opencog/a6d0102e-9ca1-4204-8dd4-75a9fb2ec06b%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> >> For more options, visit https://groups.google.com/d/optout. >> > > -- You received this message because you are subscribed to the Google Groups "opencog" group. To unsubscribe from this group and stop receiving emails from it, send an email to opencog+unsubscr...@googlegroups.com. To post to this group, send email to opencog@googlegroups.com. Visit this group at https://groups.google.com/group/opencog. To view this discussion on the web visit https://groups.google.com/d/msgid/opencog/01d0f8ad-2c6c-44af-9e46-fc71e2f2559f%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
