Download A Calculus of Ideas: A Mathematical Study of Human Thought by Ulf Grenander PDF

By Ulf Grenander

ISBN-10: 981438318X

ISBN-13: 9789814383189

This monograph experiences a notion scan with a mathematical constitution meant to demonstrate the workings of a brain. It provides a mathematical idea of human suggestion in response to trend thought with a graph-based method of considering. the strategy illustrated and produced through wide laptop simulations is said to neural networks. dependent regularly on introspection, it truly is speculative instead of empirical such that it differs significantly in perspective from the traditional knowledge of present cognitive technology.

Readership: Graduate scholars in utilized arithmetic, information and cognitive technology in addition to postgraduates and researchers in those fields.

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Extra resources for A Calculus of Ideas: A Mathematical Study of Human Thought

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Sm1 ,m2 ,... = Sm1 × Sm2 × · · · . 10) A set T of thoughts, T ⊂ MIND is called a thought pattern if it is invariant with respect to the modality group S. It is called a (restricted) thought pattern over the modalities m1 , m2 , . . if it is invariant with respect to the similarities over these modalities. Thus all modalities are thought patterns but we shall encounter much more complicated patterns in what follow. 5. The set of all thought patterns in MIND will be denoted P. It represents the power of MIND’s ability of abstract thinking.

In the opposite case, however, the mind parameters including Q and A but also channel properties (to be discussed later) will have to be modified considerably. For example, a bipolar personality will have Markovian transition intensities take more pronounced values than for the normal MIND. Or, in the case of depression, the Q values may be large for the modalities MOOD, AFFECT, FEELING2 and EMOTION2, while in a schizoid situation the modalities ILLUSION, MEMORY1, MEMORY2 and AFFECT can be emphasized.

For the elements in the MIND the identification rule R for two configurations c1 = σ1 (g11 , g21 , . . , gn1 ), c2 = σ2 (g12 , g22 , . . , gn2 ) is given c1 Rc2 iff there is a permutation (1, 2, 3, . . , n) ↔ (i1 , i2 , i3 , . . , in ) that maps generators and connections from c1 to c2 . Hence content(c1 ) = content(c2 )and the topology of connectors is preserved. In other words, the image is the invariant set under the group of graph automorphisms. 2 See 3 See GPT p. 43 and p. 106. 1 concerning identification rules.

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