Hi Michele, On Tue, Apr 6, 2021 at 6:03 AM Michele Thiella <[email protected]> wrote:
> > It was just a personal reflection. I mean that I cannot get a project to > AGI without a learning algorithm (because the knowledge base would then > surely be hand-crafted). > Yes, everything must be boot-strapped. > My idea is that maybe I wouldn't rule out supervised learning. Because > human learning is sometimes guided by a teacher, who gives you the image of > a horse and also tells you that it is a horse. > The difference between human learning and machine learning is that human learning is considered to be "one-shot". With only a few sentences, you tell a kid that "this is a horse", and then for a few minutes, the kid watches the horse trot about the paddock, or maybe just pull on some grass, and then, months later, the kid might see a horse far off in the distance, from a car window, and say "oh look there's a horse!" Supervised learning is something completely different. It is a curated corpus of thousands or tens of thousands of carefully selected photos, with a horse in the center of the frame, filling about half the frame or more, in high contrast, good lighting, good pixel resolution. A small army of grad students created that corpus, carefully drawing a red box around each horse. That corpus is then enshrined as the "WhatsamattaU. Standard Reference Horse Corpus" and is widely shared, and all the machine learning experts use it to measure accuracy, which is always 86% to 91%, except for their new algorithm, which achieves an accuracy of 91.54% on this corpus. Supervised learning is not human learning; supervised learning is the careful encoding of human knowledge into a dataset such that a machine can reproduce. It's a lot like automatically "learning" a new compression algorithm, that can compress and decompress files in a slightly lossy fashion. The goal is not to compress files, but to understand what's in those files. The kid already knows that horses eat grass and trot around paddocks. The machine has no clue what eating is, or what a paddock is. You'd need a small army of grad students to create a corpus for those concepts. "It's turtles all the way down." > Ok so, in summary: either I make it talk or I have to invent another way > to demonstrate his intelligence! > Yes. -- 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/opencog/CAHrUA340qKpbEyiUfFAmUaXj6dmueYk4-7oZsS-S26M5ykhJJw%40mail.gmail.com.
