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PageRank and Perturbed Markov Chains
Mälardalen University, School of Education, Culture and Communication, Educational Sciences and Mathematics. Department of Mathematics, College of Natural and Applied Sciences, University of Dar es Salaam,Tanzania. (MAM)ORCID iD: 0000-0001-7822-2103
Mälardalen University, School of Education, Culture and Communication, Educational Sciences and Mathematics. Department of Mathematics, School of Physical Sciences, Makerere University, Kampala, Uganda. (MAM)
Mälardalen University, School of Education, Culture and Communication, Educational Sciences and Mathematics. (MAM)ORCID iD: 0000-0002-1624-5147
Mälardalen University, School of Education, Culture and Communication, Educational Sciences and Mathematics. (MAM)ORCID iD: 0000-0003-4554-6528
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2021 (English)In: Applied Modeling Techniques and Data Analysis 1: Computational Data Analysis Methods and Tools / [ed] Yannis Dimotikalis, Alex Karagrigoriou, Christina Parpoula, Christos H. Skiadas, John Wiley & Sons, Inc. Hoboken, NJ, USA , 2021, Vol. 7, p. 57-74Chapter in book (Refereed)
Abstract [en]

PageRank is a widely used hyperlink-based algorithm for estimating the relative importance of nodes in networks. Since many real-world networks are large sparse networks, efficient calculation of PageRank is complicated. Moreover, we need to overcome dangling effects in some cases as well as slow convergence of the transition matrix. Primitivity adjustment with a damping (perturbation) parameter is one of the essential procedures known to ensure convergence of the transition matrix. If the perturbation parameter is not small enough, the transition matrix loses information due to the shift of information to the teleportation matrix. We formulate the PageRank problem as a first- and second-order Markov chains perturbation problem. Using numerical experiments, we compare convergence rates for different values of perturbation parameter on different graph structures and investigate the difference in ranks for the two problems.

Place, publisher, year, edition, pages
John Wiley & Sons, Inc. Hoboken, NJ, USA , 2021. Vol. 7, p. 57-74
Series
Big Data, Artificial Intelligence and Data Analysis Set Coordinated by Jacques Janssen ; 7
National Category
Probability Theory and Statistics
Research subject
Mathematics/Applied Mathematics
Identifiers
URN: urn:nbn:se:mdh:diva-56065DOI: 10.1002/9781119821588.ch3Scopus ID: 2-s2.0-85148109042ISBN: 978-1-786-30673-9 (print)ISBN: 978-1-119-82156-4 (electronic)OAI: oai:DiVA.org:mdh-56065DiVA, id: diva2:1599475
Funder
Sida - Swedish International Development Cooperation AgencyAvailable from: 2021-09-30 Created: 2021-09-30 Last updated: 2023-03-01Bibliographically approved

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Publisher's full textScopushttps://www.wiley.com/en-ag/Applied+Modeling+Techniques+and+Data+Analysis+1%3A+Computational+Data+Analysis+Methods+and+Tools-p-9781119821564

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Biganda, PitosAbola, BenardEngström, ChristopherSilvestrov, Sergei

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