Projects per year
Personal profile
Personal profile
Dr. Jiajun Liu is an Associate Professor in Actuarial Science at the Department of Financial and Actuarial Mathematics, Xi’an Jiaotong-Liverpool University.Dr Liu’s research focuses on the Interplay of insurance and financial risks, extreme dependence, and Heavy-tailed distributions in insurance, finance, and risk management. His research has appeared in journals such as ASTIN Bulletin, Insurance: Mathematics and Economics, North American Actuarial Journal, European Actuarial Journal, Stochastic Models, and Journal of Industrial and Management Optimization.Prior to joining XJTLU, Dr. Liu earned his Ph.D. in Mathematical Science (subtrack: Actuarial Science and Statistics) from The University of Liverpool, and B.Sc from The University of Liverpool.
Research interests
Quantitative risk management.
Copula and tail dependence.
Extreme value theory for insurance and finance.
Asymptotic analysis of rare events in insurance and finance.
Dependent risks and extremes in insurance and finance.
Heavy-tailed distributions in insurance, finance, and risk management.
Experience
2023 to Present, Associate Professor in Actuarial Science, Department of Financial and Actuarial Mathematics, Xi’an Jiaotong-Liverpool University, China.
2016 to 2023, Assistant Professor in Actuarial Science, Department of Financial and Actuarial Mathematics, Xi’an Jiaotong-Liverpool University, China.
Teaching
MTH 301 Final Year Project
MTH 313 Loss Distribution
MTH 223 Mathematical Risk Theory
MTH 120 Theory of Interest
Awards and honours
2023, XJTLU Research Enhancement Fund, REF-22-02-003, Project title: Interplay of Heavy-tailedness and Tail dependence in extreme systemic risks: from static to dynamic evaluation. Total Amount: 50,000, PI.
2022, National Natural Science Foundation of China (NFSC), 12201507, Project Title: Systemic risk Under Catastrophe Risk: An asymptotic approach Total Amount: 300,000, PI.
2022, National Natural Science Foundation of China (NFSC), 72171055, Project Title: Theory of A Two-Step Extreme Quantile Regression Model with Applications in Insurance Rate Making Total Amount: 490,000 ,CI (with PI Prof. Yanxi Hou at Fudan University).
2021, Natural Science Foundation of Jiangsu Higher Education Institutions, No. 21KJB1100, Project Title: Measuring Tail Operational Risk under Extreme Value Theory. Total Amount: 30,000, PI.
2021, XJTLU Postgraduate Research Scholarship (PGRS), PGRS2012012,Project Title: Measuring Tail Operational Risk under Extreme Value Theory. PI.
2020, XJTLU Postgraduate Research Scholarship (PGRS), PGRS1912008, Project Title: Systemic risk under Extremes. PI.
2017, XJTLU Research Development Fund (RDF) Postgraduate Research Scholarship (PGRS), RDF-17-01-21, Project Title: A Multifaceted Study of Quantitative Risk Management: Interplay of Dependent Insurance and Financial Risks. Total Amount: 92,058 RMB. PI.
2017, SEID Key Educator.
2013-2015, Hong Kong Graduate Association Awards.
2017, Jiangsu High-level Innovative and Entrepreneurship Talent Introduction (Chuang-Shuang) Plan.
Education/Academic qualification
Certificate in Professional Studies, Merit, The University of Liverpool, -2018
B.Sc , The University of Liverpool, - 2012
Ph.D. , The University of Liverpool, - 2015
Research areas
- Quantitative Risk Management
- insurance solvency analysis
- Extreme value theory for insurance and finance.
- Actuarial Science
Person Types
- Staff
Fingerprint
Dive into the research topics where Jiajun Liu is active. These topic labels come from the works of this person. Together they form a unique fingerprint.
- 1 Similar Profiles
Collaborations and top research areas from the last five years
Recent external collaboration on country/territory level. Dive into details by clicking on the dots or
-
Interplay of Heavy-tailedness and Tail dependence in extreme systemic risks: from static to dynamic evaluation
Liu, J. (PI), Chen, Y. (Team member), Li, W. (Team member) & Yi, Q. (Team member)
1/07/23 → 30/06/26
Project: Internal Research Project
-
Empirical asset pricing using machine learning and deep learning techniques
Ji, Q. (PI), Ding, X. (Team member), Jiang, H. (Team member) & Liu, J. (Team member)
1/09/22 → 31/08/26
Project: Internal Research Project
-
Systemic risk Under Catastrophe Risk：An asymptotic approach
Liu, J. (PI)
1/01/23 → 31/12/25
Project: Governmental Research Project
-
Risk Contagion under Catastrophe:?Quantitative?analysis and its applications in Risk Management
Liu, J. (PI), Wang, Y. (Team member) & Gong, Y. (Team member)
1/10/21 → 30/09/23
Project: Governmental Research Project
-
On the exact and asymptotic distributions of the likelihood ratio for some commonly used survival models with censoring
Zhu, X. (PI) & Liu, J. (Team member)
1/01/19 → 31/12/21
Project: Governmental Research Project
Research output
- 17 Article
-
Risk Contagion under Extremes: Interplay of Tail Heaviness and Dependence
He, X.-Z., Li, W., Ling, C. & Liu, J., 2026, (In preparation) In: SSRN Online Journal.Research output: Contribution to journal › Article › peer-review
-
Uniform asymptotics for a multidimensional renewal risk model with multivariate subexponential claims
Konstantinides, D. G., Liu, J. & Passalidis, C. D., 2026, (E-pub ahead of print) In: Scandinavian Actuarial Journal.Research output: Contribution to journal › Article › peer-review
Open Access -
Asymptotics for the conditional higher moment coherent risk measure with weak contagion
Liu, J. & Yi, Q., Jan 2025, In: ASTIN Bulletin. 55, 1, p. 121-143 23 p.Research output: Contribution to journal › Article › peer-review
-
Time-lagged marginal expected shortfall
Liu, J., Liu, X. & Zhao, Y., 2025, (Submitted) In: arXiv.Research output: Contribution to journal › Article › peer-review
-
Uniform asymptotics for a multidimensional renewal risk model with multivariate subexponential claims
Konstantinides, D. G., Liu, J. J. & Passalidis, C. D., 2025, (Accepted/In press) In: Scandinavian Actuarial Journal.Research output: Contribution to journal › Article › peer-review
Activities
-
2025 Suzhou University Workshop on Financial Mathematics & Actuarial Science
Wen, C. (Organiser), Cao, Y. (Organiser), Lu, Z. (Organiser) & Liu, J. (Organiser)
28 Aug 2025 → 29 Aug 2025Activity: Participating in or organising an event › Organising an event e.g. a conference, workshop, …
-
Extremes for Tail-based Gini Risk Variability Measures with varying Risk Preferences
Liu, J. (Speaker)
9 Jul 2025 → 12 Jul 2025Activity: Talk or presentation › Presentation at conference/workshop/seminar
-
Stochastics (Journal)
Liu, J. (Reviewer)
1 Jul 2025 → 1 Oct 2025Activity: Peer-review and editorial work of publications › Publication Peer-review
-
Extremes for tail-based gini risk variability risk measures with varying risk preferences
Liu, J. (Speaker)
1 Jul 2025 → 4 Jul 2025Activity: Talk or presentation › Presentation at conference/workshop/seminar
-
Statistics and Probability Letters (Journal)
Liu, J. (Reviewer)
4 Jun 2025 → 2 Sept 2025Activity: Peer-review and editorial work of publications › Publication Peer-review