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USD 40 /hr
Hire Dr. Priyantha W.
Sweden
USD 40 /hr

Freelance Statistician & Data Analyst & researcher | Expert in R & SPSS

Profile Summary
Subject Matter Expertise
Services
Writing Technical Writing
Research Fact Checking, Gray Literature Search, Systematic Literature Review
Data & AI Statistical Analysis, Algorithm Design-Non ML, Data Visualization
Work Experience

Consultant Statistician

Statlytika

January 2025 - Present

Senior Lecturer

Umeå University

April 2008 - December 2024

Postdoctoral Researcher

Tokyo Institute of Technology

April 2007 - March 2008

Education

D.Sc. (Mathematical and Computing Sciences)

Tokyo Institute of Technology

April 2004 - March 2007

Certifications
  • Certification details not provided.
Publications
PREPRINT
Priyantha Wijayatunga (2025). Resolving Jeffreys–Lindley Paradox .
Priyantha Wijayatunga (2024). Probability Paradoxes for Increasing Critical Thinking Skills .
JOURNAL ARTICLE
Priyantha Wijayatunga, Prasanta S. Bandyopadhyay, Stephen Woodcock (2024). Editorial: Probability and its paradoxes for critical thinking . Frontiers in Education.
Priyantha Wijayatunga(2023). Discussion on the paper titled “Experimental Evaluation of Algorithm-Assisted Human Decision-Making: Application to the Pretrial Safety Assessment” . Journal of the Royal Statistical Society Series A: Statistics in Society. Oxford University Press ({OUP})
Probabilistic prediction of increased intracranial pressure in patients with severe traumatic brain injury <head> <META HTTP-EQUIV="Refresh" CONTENT="0;URL=/servlet/useragent"> </head> . Scientific Reports.
(2021). Priyantha Wijayatunga’s contribution to the Discussion of ‘Testing by betting: A strategy for statistical and scientific communication’ by Glenn Shafer . Journal of Royal Statistical Society Series A.
Priyantha Wijayatunga, Ole Bernt Suhr, Pavel Strnad, Jonas Wixner, Intissar Anan, Hans-Erik Lundgren, Per Westermark, Elisabet Ihse(2019). Amyloid fibril composition within hereditary Val30Met (p. Val50Met) transthyretin amyloidosis families . PLOS ONE. 14. (2). p. e0211983. Public Library of Science ({PLoS})
(2019). Discussion on the meeting on “Data visualization” . Journal of the Royal Statistical Society: Series A (Statistics in Society),.
Suhr, O.B., Wixner, J., Anan, I., Lundgren, H.-E., Wijayatunga, P., Westermark, P., Ihse, E.(2019). Amyloid fibril composition within hereditary Val30Met (p. Val50Met) transthyretin amyloidosis families . PLoS ONE. 14. (2).
(2018). Discussion on the Paper “Statistical challenges of administrative and transaction data” by David J. Hand . Journal of the Royal Statistical Society: Series A (Statistics in Society).
(2017). Discussion on the Paper “Beyond objective and subjective in statistics” by Gelman and Hennig . Journal of the Royal Statistical Society: Series A (Statistics in Society).
(2017). Discussion on the Paper “Sparse graphs using exchangeable random measures” by Caron and Fox . Journal of the Royal Statistical Society: Series B (Statistical Methodology).
(2016). A geometric view on Pearson’s correlation coefficient and a generalization of it to non-linear dependencies . Ratio Mathematica.
Priyantha Wijayatunga, Mikael Brink, Monika Hansson, Linda Mathsson-Alm, Marije K. Verheul, Leendert A. Trouw, Rikard Holmdahl, Johan R&#246;nnelid, Lars Klareskog, Solbritt Rantap&#228;&#228;-Dahlqvist(2016). Rheumatoid factor isotypes in relation to antibodies against citrullinated peptides and carbamylated proteins before the onset of rheumatoid arthritis . Arthritis Research & Therapy. 18. (1). Springer Nature
Brink, M., Hansson, M., Mathsson-Alm, L., Wijayatunga, P., Verheul, M.K., Trouw, L.A., Holmdahl, R., R&#246;nnelid, J., Klareskog, L., Rantap&#228;&#228;-Dahlqvist, S.(2016). Rheumatoid factor isotypes in relation to antibodies against citrullinated peptides and carbamylated proteins before the onset of rheumatoid arthritis . Arthritis Research and Therapy. 18. (1).
(2015). Liver Transplantation for Hereditary Transthyretin Amyloidosis: After 20 Years Still the Best Therapeutic Alternative? . Transplantation.
(2015). Probabilistic Analysis of Balancing Scores for Causal Inference . Journal of Mathematics Research.
(2015). Liver Transplantation for Hereditary Transthyretin Amyloidosis: After 20 Years Still the Best Therapeutic Alternative? . Transplantation.
Ericzon, B.-G., Wilczek, H.E., Larsson, M., Wijayatunga, P., Stangou, A., Pena, J.R., Furtado, E., Barroso, E., Daniel, J., Samuel, D., et al.(2015). Liver Transplantation for Hereditary Transthyretin Amyloidosis: After 20 Years Still the Best Therapeutic Alternative? . Transplantation. 99. (9). p. 1847-1854.
(2014). VIEWING SIMPSON’S PARADOX. Statistica & Applicazioni.
(2014). Causal Effect Estimation Methods . Journal of Statistical and Econometric Methods.
(2013). To transplant or not to transplant - Lessons learned from 20 years global collaboration in liver transplantation for hereditary transthyretin amyloidosis . Hepatology.
(2013). A Consistency Result for Bayes Classifiers with Censored Response Data . Theoretical mathematics and applications.
(2011). Continuous development of arrhythmia is observed in Swedish transplant patients with familial amyloidotic polyneuropathy (amyloidogenic transthyretin Val30Met variant) . Liver transplantation.
Okamoto, S., H&#246;rnsten, R., Obayashi, K., Wijayatunga, P., Suhr, O.B.(2011). Continuous development of arrhythmia is observed in swedish transplant patients with familial amyloidotic polyneuropathy (amyloidogenic transthyretin Val30Met variant) . Liver Transplantation. 17. (2). p. 122-128.
(2011). Development of cardiomyopathy after liver transplantation in Swedish hereditary transthyretin amyloidosis (ATTR) patients . Amyloid.
Okamoto, S., Zhao, Y., Lindqvist, P., Backman, C., Ericzon, B.-G., Wijayatunga, P., Henein, M.Y., Suhr, O.B.(2011). Development of cardiomyopathy after liver transplantation in Swedish hereditary transthyretin amyloidosis (ATTR) patients . Amyloid. 18. (4). p. 200-205.
Wijayatunga, P., Mase, S., Nakamura, M.(2006). Appraisal of companies with Bayesian networks . International Journal of Business Intelligence and Data Mining. 1. (3). p. 329-346.
(2006). Appraisal of companies with Bayesian networks . International Journal of Business Intelligence and Data Mining.
BOOK CHAPTER
Priyantha Wijayatunga(2023). Some Cases of Prediction and Inference with Uncertainty . Lecture Notes in Networks and Systems. p. 265--274. Springer Nature Switzerland
CONFERENCE PAPER
(2019). Probability, Paradoxes and Human Thinking. The 15th Conference of the Swedish Cognitive Science Society (SweCog 2019).
(2019). Resolution to four probability paradoxes: Two-envelope, Wallet-game, Sleeping Beauty and Newcomb’s. Proceedings of the 34th International Workshop on Statistical Modeling 2019, Guimarães, Portugal. Vol II, pp. 252-257.
Wijayatunga, P.(2019). Probabilistic graphical models and their inferences (Tutorial) . Proceedings - 2019 IEEE 4th International Workshops on Foundations and Applications of Self* Systems, FAS*W 2019. p. 251-252.
(2017). Resolving the Lord’s Paradox . Proceedings of International Workshop on Statistical Modelling 2017, University of Groningen, The Netherlands. Vol II.
(2016). Data Deluge and Its Analysis Issues. Proceedings of the 2nd International Conference in Accounting Researchers and Educators (ICARE 2016), University of Kelaniya, Sri Lanka.
(2015). On Associative Confounder Bias . Frontiers in Artificial Intelligence and Applications.
CONFERENCE ABSTRACT
(2019). Probabilistic Graphical Models and Their Inferences (Tutorial) . 2019 IEEE 4th International Workshops on Foundations and Applications of Self* Systems (FAS*W).
BOOK
15. Wijayatunga, P. (2017). On Measuring Statistical Dependence. In: Gloria Scientiam, The Golden Jubilee Commemorative Volume of the Faculty of Science, University of Kelaniya, Sri Lanka, M.J.S. Wijeyaratne and W.U. Chandraseara (Eds.), University of Kelaniya, Sri Lanka, pp.507-513.
Wijayatunga, P.(2015). On associative confounder bias . Frontiers in Artificial Intelligence and Applications. 278. p. 157-166.
MAGAZINE ARTICLE
(2013). Correlation and causation explained . The Statistics Dictionary.
BOOK REVIEW
(2013). Book Review: Bayesian Theory and Applications . Qvintensen.
REPORT
(2007). Asymptotic Properties of Maximium Collective Conditional Likelihood Estimator for Naive Bayes Classifiers . Technical Reports: Department of Mathematical and Computing Sciences, Tokyo Institute of Technology, Tokyo, Japan.