Tag Archives: Learning

The AtomSpace: a Typed Graphical Distributed in-RAM Knowledgebase

The OpenCog AtomSpace is a typed graphical distributed in-RAM knowledgebase. The meaning of all those buzzwords is that it is trying to fix many different, related problems that computers (and people) have when working with data. This blog-post discusses some … Continue reading

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Why Hypergraphs?

I’ve recently been hacking on creating a new parser for the Link Grammar theory of natural language parsing. I want to couple parsing to machine learning (ML), to that I can use ML to learn natural languages. To do that, I need to place everything in a certain abstract data representation framework that allows graph rewrite rules, logical reasoning, and Bayesian probabilistic reasoning to be combined. This framework exists in OpenCog, but few people know or understand this. That this framework also has a firm foundation in model theory, category theory (even n-categories!) and type theory is even less well known. To explain all this, I just wrote a simple, easy introduction to all of these ideas, and how they come together. Follow the link for more. Continue reading

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The MOSES Metapopulation

Or, how to select a promising species for mutation. Continue reading

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Genetic Crossover in MOSES

MOSES is a system for learning programs from input data. ¬†Given a table of input values, and a column of outputs, MOSES tries to learn a program, the simplest program that can reproduce the output given the input values. The … Continue reading

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Tuning Metalearning in MOSES

I’ve been studying MOSES recently, with an eye towards performance tuning it. Turns out optimization algorithms don’t always behave the way you think they do, and certainly not the way you want them to. Given a table of values, MOSES … Continue reading

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