Comparing Information-Theoretic Measures of Complexity in Boltzmann Machines

In the past three decades, many theoretical measures of complexity have been proposed to help understand complex systems. In this work, for the first time, we place these measures on a level playing field, to explore the qualitative similarities and differences between them, and their shortcomings....

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Main Authors: Maxinder S. Kanwal, Joshua A. Grochow, Nihat Ay
Format: Article
Language:English
Published: MDPI AG 2017-07-01
Series:Entropy
Subjects:
Online Access:https://www.mdpi.com/1099-4300/19/7/310
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author Maxinder S. Kanwal
Joshua A. Grochow
Nihat Ay
author_facet Maxinder S. Kanwal
Joshua A. Grochow
Nihat Ay
author_sort Maxinder S. Kanwal
collection DOAJ
description In the past three decades, many theoretical measures of complexity have been proposed to help understand complex systems. In this work, for the first time, we place these measures on a level playing field, to explore the qualitative similarities and differences between them, and their shortcomings. Specifically, using the Boltzmann machine architecture (a fully connected recurrent neural network) with uniformly distributed weights as our model of study, we numerically measure how complexity changes as a function of network dynamics and network parameters. We apply an extension of one such information-theoretic measure of complexity to understand incremental Hebbian learning in Hopfield networks, a fully recurrent architecture model of autoassociative memory. In the course of Hebbian learning, the total information flow reflects a natural upward trend in complexity as the network attempts to learn more and more patterns.
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spelling doaj.art-ac3cd41ba5f040cc902a10430288a80e2022-12-22T04:00:13ZengMDPI AGEntropy1099-43002017-07-0119731010.3390/e19070310e19070310Comparing Information-Theoretic Measures of Complexity in Boltzmann MachinesMaxinder S. Kanwal0Joshua A. Grochow1Nihat Ay2Department of Electrical Engineering and Computer Science, University of California, Berkeley, CA 94720, USADepartments of Computer Science and Mathematics, University of Colorado, Boulder, CO 80309, USASanta Fe Institute, Santa Fe, NM 87501, USAIn the past three decades, many theoretical measures of complexity have been proposed to help understand complex systems. In this work, for the first time, we place these measures on a level playing field, to explore the qualitative similarities and differences between them, and their shortcomings. Specifically, using the Boltzmann machine architecture (a fully connected recurrent neural network) with uniformly distributed weights as our model of study, we numerically measure how complexity changes as a function of network dynamics and network parameters. We apply an extension of one such information-theoretic measure of complexity to understand incremental Hebbian learning in Hopfield networks, a fully recurrent architecture model of autoassociative memory. In the course of Hebbian learning, the total information flow reflects a natural upward trend in complexity as the network attempts to learn more and more patterns.https://www.mdpi.com/1099-4300/19/7/310complexityinformation integrationinformation geometryBoltzmann machineHopfield networkHebbian learning
spellingShingle Maxinder S. Kanwal
Joshua A. Grochow
Nihat Ay
Comparing Information-Theoretic Measures of Complexity in Boltzmann Machines
Entropy
complexity
information integration
information geometry
Boltzmann machine
Hopfield network
Hebbian learning
title Comparing Information-Theoretic Measures of Complexity in Boltzmann Machines
title_full Comparing Information-Theoretic Measures of Complexity in Boltzmann Machines
title_fullStr Comparing Information-Theoretic Measures of Complexity in Boltzmann Machines
title_full_unstemmed Comparing Information-Theoretic Measures of Complexity in Boltzmann Machines
title_short Comparing Information-Theoretic Measures of Complexity in Boltzmann Machines
title_sort comparing information theoretic measures of complexity in boltzmann machines
topic complexity
information integration
information geometry
Boltzmann machine
Hopfield network
Hebbian learning
url https://www.mdpi.com/1099-4300/19/7/310
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