• Otakaari 1

20042020

Research output per year

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Personal profile

Artistic and research interests

My research area is stochastics, the mathematical theory of random events, systems, and processes. The main focus is statistical network models and random graphs, together with random dynamical systems and stochastic processes acting on networks. The general objective is to derive fundamental mathematical laws for predicting the macroscopic behavior of large random systems and describing the accuracy of statistical learning algorithms for large network models. Such laws allow to make predictions using massive high-dimensional data sets for which classical methods of statistics and machine learning are often infeasible. Statistical network models under study include random intersection graphs, stochastic block models, and graphons. The archetypes of stochastic dynamics studied are branching processes, random walks, and first passage percolation. The formulas and methods have a wide range of applications ranging from information and social networks to biological and financial systems.

Education/Academic qualification

Doctor of Science (Technology)

Master of Science (Technology), Engineering Physics

External positions

Professor (pro tem), University of Jyväskylä

1 Oct 201131 Jul 2012

University Lecturer, University of Jyväskylä

1 Jan 201131 Dec 2014

Assistant professor, Eindhoven University of Technology

1 Jun 200731 Dec 2007

Postdoctoral researcher, Centrum voor Wiskunde en Informatica

1 Jun 200631 May 2007

Visiting Scholar, Columbia University

1 Mar 200631 May 2006

Keywords

  • Probability theory
  • Stochastic processes
  • Random graphs
  • Statistical network models
  • Queueing Theory
  • Applied probability
  • Stochastics
  • Stochastic modeling

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Research Output

Assortativity and bidegree distributions on Bernoulli random graph superpositions

Bloznelis, M., Karjalainen, J. & Leskelä, L., 2 Jun 2020, Algorithms and Models for the Web Graph: 17th International Workshop, WAW 2020, Warsaw, Poland, September 21–22, 2020, Proceedings. Kamiński, B., Prałat, P. & Szufel, P. (eds.). Springer LNCS, p. 68-81 14 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 12091).

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  • Towards analyzing large graphs with quantum annealing

    Reittu, H., Kotovirta, V., Leskelä, L., Rummukainen, H. & Räty, T., 24 Feb 2020, Proceedings - 2019 IEEE International Conference on Big Data, Big Data 2019. IEEE, p. 2457-2464 9006174

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  • Analysis of large sparse graphs using regular decomposition of graph distance matrices

    Reittu, H., Leskelä, L., Räty, T. & Fiorucci, M., 22 Jan 2019, Proceedings - 2018 IEEE International Conference on Big Data, Big Data 2018. Song, Y., Liu, B., Lee, K., Abe, N., Pu, C., Qiao, M., Ahmed, N., Kossmann, D., Saltz, J., Tang, J., He, J., Liu, H. & Hu, X. (eds.). IEEE, p. 3784-3792 9 p. 8622118

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

    Open Access
  • 1 Citation (Scopus)

    First passage percolation in sparse random graphs with boundary weights

    Leskelä, L. & Ngo, H., 30 Jul 2019, In : Journal of Applied Probability. 56, 2, p. 458-471 14 p.

    Research output: Contribution to journalArticleScientificpeer-review

    Open Access
  • Pathwise Stieltjes integrals of discontinuously evaluated stochastic processes

    Chen, Z., Leskelä, L. & Viitasaari, L., 1 Aug 2019, In : Stochastic Processes and their Applications. 129, 8, p. 2723-2757 35 p.

    Research output: Contribution to journalArticleScientificpeer-review

    Open Access
  • 1 Citation (Scopus)

    Projects

    Stokastisen prosessointiverkkojen vakaus ja ohjaus

    Leskelä, L.

    01/01/201031/12/2010

    Project: Academy of Finland: Other research funding

    Prizes

    McKinsey Prize

    Lasse Leskelä (Recipient), 2000

    Prize: Award or honor granted for academic career

    Varma-Sampo MSc thesis prize, Finnish Mathematical Society

    Lasse Leskelä (Recipient), 2000

    Prize: Award or honor granted for a specific work

    Activities

    Workshop on Algorithms and Models for the Web Graph

    Lasse Leskelä (Member)
    18 Jun 202019 Jun 2020

    Activity: Participating in or organising an event typesMembership of a scientific or program committee of a conference or seminar

    Konstantin Avrachenkov

    Lasse Leskelä (Host)
    2 Mar 20206 Mar 2020

    Activity: Hosting a visitor typesHosting a visitor

    Maximilien Dreveton

    Lasse Leskelä (Host)
    2 Mar 20206 Mar 2020

    Activity: Hosting a visitor typesHosting a visitor

    European Performance Engineering Workshop

    Lasse Leskelä (Member)
    27 Nov 201928 Nov 2019

    Activity: Participating in or organising an event typesMembership of a scientific or program committee of a conference or seminar

    Stochastic Sauna

    Lasse Leskelä (Member)
    18 Dec 2019

    Activity: Participating in or organising an event typesOrganization of a workshop, panel, session or tutorial