Ajiboye Reginald Babalola

Ajiboye Reginald Babalola

Ajiboye Reginald Babalola

Assistant Professor

Stochastic models, probability theory, Galton Watson Processes, Queueing theory, Statistical Inference

Ajiboye Reginald Babalolá is a distinguished Nigerian statistician and academic, renowned for his expertise in stochastic processes and system modeling. Born on December 6th, he hails from Egbe in Kogi State and was raised in Lagos, Nigeria. Ajiboye earned his Bachelor's degree in Statistics from Ahmadu Bello University in Zaria, Nigeria, and pursued his graduate studies at Obafemi Awolowo University, where he obtained both his Master's (2015) and PhD (2022) in Statistics.

His doctoral thesis focused on modeling and analyzing a queued switch system, employing advanced tools such as the Poisson process, birth-death processes, and modified Markov processes. His research also integrated combinatorial analysis and concepts from linear algebra, including Kronecker sums and products.

With over a decade of teaching experience, Ajiboye has dedicated more than eight years to Obafemi Awolowo University, where he progressed to the rank of Lecturer Grade One. Currently, he serves as an Assistant Professor in Korea, continuing his passion for educating and mentoring students in the field of statistics. He has authored approximately ten peer-reviewed articles, primarily published in Scopus-indexed journals.

Ajiboye is actively involved in professional societies, including the Nigerian Mathematical Association and the Royal Statistical Society (RSS) in England. Beyond his academic pursuits, he is a talented guitarist, a passionate soccer and basketball enthusiast, and a connoisseur of jazz and soul music, enjoying the rich ambience these genres offer.

Current Research

My current research activity is centered on Stochastic Processes, Combinatorial Analysis, Information Theory and Epidemiology. With respect to Stochastic processes, my Ph.D. thesis focused on the behavior of heterogenous packets in a network of switches under varying traffic systems. The work itself combined theories such as direct sum, direct product, combinatorial analysis and packet switching into a queueing system whose arrival is that of a batch Markov arrival process and with multiple service. The whole process engendered a linear system of equation whose origin is from the Transition Probability Matrix (TPM). The construction of this TPM came from the principle of the birth and death process and was consequently solved using the Gauss-Jordan approach to find the steady state probability vector, and upon these, the Mean Recurrence Time, Mean First Passage Times, and then with a mathematical program (MATLAB) find the Minimum Mean First Passage Times, Euclidean distance between vectors, measure of dominance and other such measures for sensitivity analysis. 

Recently, I commenced a research in the direction of game theory which emanated from the super imposition of two orthogonal Latin squares in the area of experimental design to form a Graeco-Latin square which was observed to have patterns of the moves of game pieces on the chess board. A comparison of these two powerful and influential officers is necessary for identifying the expected payoff of the two different moves. These officers are the bishop and the knight at specific positions and circumstances on the chess board with to making a possible move. The solution to the problem would involve the Nash equilibrium, saddle point, dominance, arithmetic, calculus, algebraic and a graphical method. All of these methods are such that one attempts to answer what implication those values may mean to a player who wants to decide.

Selected Publications

A.   Publications:

1.      Thesis/Dissertation:

(a)   Babalola A. R. (2009): Spectral Analysis using MATLAB, B.Sc. (Statistics), Ahmadu Bello University, Zaria, Nigeria.

(b)    Babalola A. R. (2015): A Queueing Analysis for Performance of a 2×3 Switch Model under Bursty Traffic, M.Sc. (Statistics), Obafemi Awolowo University, Ile-Ife, Nigeria.

(c)   Babalola A. R. (2022): Analysis of Batch Arrivals with Multiple Service for Unbalanced Queueing Systems, Ph.D. (Statistics), Obafemi Awolowo University, Ile-Ife, Nigeria.

Expanded Publication List

2.      Published Articles:

(i)   Babalola A. R. and Obilade T. O. (2016):

Analytic queueing performance of a combined input crosspoint queued (CICQ) switch under bursty traffic. International Journal of Scientific & Engineering Research, 7(3), 1349 - 1361. INDIA

(ii)  Babalola A. R. and Obilade T. (2018):

A sequential test for the mittag-leffler distribution. Asian Pacific Journal of Research, 1(88), 92 - 95. INDIA

(iii) Babalola A. R. and Obilade T. (2018):

An optimal analysis of an n-queue system: idle period distribution approach.  International Journal of Scientific & Engineering Research, 9(6), 808 - 813. INDIA

(iv) Babalola A. R. and Obilade T. (2018):

The analysis of the route at an arbitrary time during service. International Journal of Innovative Research and Development, 7(5), 202 - 209. BANGALORE

(v) Komolafe S. A., Obilade T. O., Ayodeji I. O. and Babalola, A. R. (2019) Development of a first order integrated moving average model corrupted with a markov modulated convex combination of autoregressive moving average errors. Statistical Theory and Related Fields, 3(1), 48-58. UNITED KINDOM

(vi) Simon Biaou B. O., A. O. Oluwatope, H. O. Odukoya, A. Babalola, O. E. Ojo and E. H. Sossou. (2020): Ayo game approach to mitigate free riding in peer-to-peer networks. Journal of King Saud University-Computer and Information Science 

(vii) Tijani Y. O., S. D., Oloniju, O. Otegbeye and A. R. Babalola. (2023). Magnetic feature and regression analysis of Reiner-Philippoff boundary layer flow. Numerical Heat Transfer, Part B: Fundamentals, DOI: 10.1080/10407790 .2023.2290189.

(viii) Titi. Obilade, Babalola A. R., Sab. Francis, S. O. Ezeah and A. Bagbe (2024). On the connected
two-step Markov chains and an application to patients’ behaviour and compliance with medications.
Journal of the Mathematical Society. (ACCEPTED).
(ix) Esla Timothy Anzaku, Haohan Wang, Ajiboye Babalola, Arnout Van Messem, Wesley De Neve
(2025). Re-assessing Accuracy Degradation: A Framework for Understanding DNN Behavior on
Similar-but-non-identical Test Datasets. Mach Learn 114 (84). https://doi.org/10.1007/s10994-
024-06693-x

Courses Taught

  • STAT 250
  • STAT 350
  • MATH 203
  • CDS 102
  • BUS 310

Education

(i)                 Ahmadu Bello University, Zaria, Nigeria (B.Sc. Statistics)                2005-2010

(ii)              Obafemi Awolowo University, Ile Ife, Nigeria (M.Sc. Statistics)         2012-2015

(iii)            Obafemi Awolowo University, Ile Ife, Nigeria (Ph.D. Statistics)           2016-2022