Publications
Journal Articles and Preprints
Wiroonsri, N. and Preedasawakul, O., A Bayesian Cluster Validity Index, arXiv:2402.02162, 2024. [ArXiv]
Wiroonsri, N. and Preedasawakul, O., A correlation-based fuzzy cluster validity index with secondary options detector, arXiv:2308.14785, 2023. [ArXiv] [R package]
Wiroonsri, N., Clustering performance analysis using a new correlation based cluster validity index, Pattern Recognition, 145, 109910, 2024. [ArXiv] [R package] [Pattern Recog.]
Moe Oo, M., Wiroonsri, N., Klamsakul, N., Jiarasuksakun, T., and Kaemawichanurat, P., The Expected Values of Hosoya Index and Merrifield-Simmons Index of Random Hexagonal Cacti, MATCH Communications in Mathematical and in Computer Chemistry, 91(3) 2024. [MATCH]
Kantachote, K. and Wiroonsri, N., Octa-Cluster: Different Perspectives on Quality of Life in Thailand, Sage Open, 2023. [Sage]
Tabassum, H., Kaemawichanurat, P., Adeela, and Wiroonsri, N.,, Relationship between Ordinary, Laplacian, Randic, Incidence, and Sombor Energies of Trees, MATCH Communications in Mathematical and in Computer Chemistry, 90(3) 2023. [MATCH]
Jantai, W. and Wiroonsri, N., On combinatorial central limit theorems with different underlying permutations via approximate zero biasing, submitted, 2023.
Thongtha, D. and Wiroonsri, N., Normal approximation for fire incident simulation using permanental Cox processes, Methodology and Computing in Applied Probability, 25, 2023. [MCAP] [ArXiv]
Kantachote, K. and Wiroonsri, N., Do elderly want to work? Modeling elderly’s decision to fight aging Thailand, Quality & Quantity, 57, 509-539 2023. [Q&Q] [ArXiv]
Wiroonsri, N., Concentration inequalities using approximate zero bias couplings with applications to Hoeffding's statistic under the Ewens distribution, Communications in Statistics - Theory and Methods, 2022. [CommunStat] [ArXiv]
Wiroonsri, N., Normal approximation for associated point processes via Stein's method with applications to determinantal point processes, Journal of Mathematical Analysis and Applications, 480(1), 123396, 2019. [JMAA] [ArXiv]
Wiroonsri, N., Stein's method for negatively associated random variables with applications to second order stationary random fields. Journal of Applied Probability, 55(1), 196-215, 2018. [ArXiv] [JAP]
Goldstein, L. and Wiroonsri, N., Stein's method for positively associated random variables with applications to the Ising and voter models, bond percolation, and contact process, Annales de l’Institut Henri Poincaré - Probabilités et Statistiques, 54(1), 385-421, 2018. [ArXiv] [AIHP] [PDF]
Wiroonsri, N., Stein's method using approximate zero bias couplings with applications to combinatorial central limit theorems under the Ewens distribution, ALEA, Lat. Am. J. Probab. Math. Stat. 14, 917–946, 2017. [ArXiv] [ALEA]
Meemark, Y. and Wiroonsri, N., The digraph of the kth power mapping of the quotient ring of polynomials over finite fields, Finite Fields and Their Applications, 18, 179–191, 2012. [FFA]
Meemark, Y. and Wiroonsri, N., The quadratic digraph on polynomial rings over finite fields, Finite Fields and Their Applications, 16, 334–346, 2010. [FFA]
Invited Talks
"Clustering performance analysis using new correlation-based cluster validity indices with an R package" @ IMS-ICSDS2023, Lisbon, Portugal, 2023
"Clustering performance analysis using a new correlation-based cluster validity index with an R package" @ UAMC2023, Suranaree University of Technology, Thailand, 2023
"When mathematical research meets business and our society featuring a new correlation-based cluster validity index" @ Prince of Songkla University, 2022
"Normal approximation for associated point processes with applications to fire incident simulation using permanental Cox processes" @ Stein’s method: The golden anniversary, National University of Singapore, Singapore, 2022
"Webinar: ขุมทรัพย์ (Big) Data สร้ำงควำมต่ำงให้กับธุรกิจ" Virtual Session, 2021
Ph.D. Thesis
Wiroonsri, N., Stein's method via approximate zero biasing and positive association with applications to combinatorial central limit theorem and statistical physics, Ph.D. thesis, University of Southern California, 2018. [USC]
Thai Journal and Conference Articles
Dechpichai, P., Chokratprapa, L., Sripath, S., and Wiroonsri, N. A comparison study of predictive models for Customer Lifetime Value and the change of its level (in Thai), Modern Management Journal, 20(2), 2022.
Wiroonsri, N., Chokratprapa, L., Srisamarn, N. and Dechpichai, P., Clustering customers using their in-depth buying behavior: A pet food manufacturing company case study, Journal of Science Ladkrabang, 31(1), 2022. [Link]
กมลวรรณ ขอชัยดำรง อัญชิสา พึ่งวิกรัย สิรินยา ถนอมสัตย์ และ ณรรฐคุณ วิรุฬห์ศรี (2021). “การจัดกลุ่มลูกค้าอาหารสัตว์เลี้ยงจากพฤติกรรมการซื้อสินค้าตามแบรนด์และขนาดสินค้าโดยใช้ Cluster Analysis”, รายงานการประชุมวิชาการทางคณิตศาสตร์ครั้งที่ 25 ประจำปี 2564 (The 25th Annual Meeting in Mathematics: AMM 2021), 27-29 พฤษภาคม 2564, สถาบันเทคโนโลยีพระจอมเกล้าเจ้าคุณทหารลาดกระบัง กรุงเทพมหานคร, 181-196.
ปณต เตียเหลียง ธัญพร ศุภศิระสัตย์กุล อภิญญา จินดาพรสุข และ ณรรฐคุณ วิรุฬห์ศรี (2021) “การจำแนกกลุ่มลูกค้าอาหารสัตว์เลี้ยงจากอิทธิพลของโปรโมชั่นโดยใช้การวิเคราะห์จัดกลุ่มแบบสหสัมพันธ์”, รายงานการประชุมวิชาการคณิตศาสตร์บริสุทธิ์และประยุกต์ประจำปี 2564 (Annual Pure and Applied Mathematics Conference 2021), 17-18 มิถุนายน 2564, จุฬาลงกรณ์มหาวิทยาลัย กรุงเทพมหานคร, 192-211.