Professor of Statistics at University of Jyväskylä. Interested in causal models, study design, and missing data. Homepage: http://users.jyu.fi/~jutakarv/https://bsky.app/profile/juhakarvanen.bsky.socialhttps://bsky.app/profile/juhakarvanen.bsky.social/post/3m5j3f4o2ik2tIn longitudinal studies, dropout leads to a monotone missing data pattern. We show in a new article that monotonicity sometimes enables and sometimes prevents the identification of  the full law, i.e., the joint distribution of actual variables and response indicators. https://openreview.net/pdf?id=kVthdlAVks13 Nov 2025 11:39 +0000at://did:plc:2ekg64wcfidd3fj5pdnqchfc/app.bsky.feed.post/3m5j3f4o2ik2thttps://bsky.app/profile/juhakarvanen.bsky.social/post/3lsduias4vs2mIn a new preprint, we study causal effect identification with multiple data sources. We show that certain clustering and pruning operations of the causal graph are identification invariant. This means that we may use the smaller graph to make conclusions on the larger graph. arxiv.org/abs/2505.15215 https://arxiv.org/abs/2505.1521524 Jun 2025 10:15 +0000at://did:plc:2ekg64wcfidd3fj5pdnqchfc/app.bsky.feed.post/3lsduias4vs2mhttps://bsky.app/profile/juhakarvanen.bsky.social/post/3lmgworntps2xOur paper on the value of information for a risk-averse decision maker was published. Koski, V., Karvanen, J. Risk aversion in the value of information analysis: application to lake management. Stochastic Environmental Research and Risk Assessment (2025) https://doi.org/10.1007/s00477-025-02970-w10 Apr 2025 07:01 +0000at://did:plc:2ekg64wcfidd3fj5pdnqchfc/app.bsky.feed.post/3lmgworntps2xhttps://bsky.app/profile/juhakarvanen.bsky.social/post/3lccspbwggs2sUniversity of Jyväskylä has opened calls for a tenure-track professor and a senior lecturer in statistics: https://ats.talentadore.com/apply/assistant-or-associate-professor-in-statistics/Zx3zry https://ats.talentadore.com/apply/senior-lecturer-in-statistics/me1yv6 In addition, applications are invited for the JYU Visiting Fellow Programme: https://ats.talentadore.com/apply/jyu-visiting-fellow-programme-2025/ZYk0RY02 Dec 2024 09:28 +0000at://did:plc:2ekg64wcfidd3fj5pdnqchfc/app.bsky.feed.post/3lccspbwggs2shttps://bsky.app/profile/juhakarvanen.bsky.social/post/3lbpnsegql22rScholar Goggler summarized my research topics. scholargoggler.com24 Nov 2024 18:39 +0000at://did:plc:2ekg64wcfidd3fj5pdnqchfc/app.bsky.feed.post/3lbpnsegql22rhttps://bsky.app/profile/juhakarvanen.bsky.social/post/3laokljdnpc2jSanttu Tikka and I wrote two preprints on identification in missing data problems. The results have interesting implications for multiple imputation. Multiple imputation and full law identifiability, arxiv.org/abs/2410.18688 Monotone missing data: a blessing and a curse, arxiv.org/abs/2411.03848 https://arxiv.org/abs/2410.1868811 Nov 2024 14:44 +0000at://did:plc:2ekg64wcfidd3fj5pdnqchfc/app.bsky.feed.post/3laokljdnpc2jhttps://bsky.app/profile/juhakarvanen.bsky.social/post/3laoipwfwfc2jForestry is important for the economies of Finland and Sweden and provides interesting problems also for statisticians. In a recent work done in collaboration with Skogforsk, we optimized the inventory decisions in operational forestry. https://doi.org/10.1093/biomtc/ujae10411 Nov 2024 14:11 +0000at://did:plc:2ekg64wcfidd3fj5pdnqchfc/app.bsky.feed.post/3laoipwfwfc2jhttps://bsky.app/profile/juhakarvanen.bsky.social/post/3lagymwwxun2sSimulating values from a known distribution is a basic task in statistics. But how to simulate from a counterfactual distribution? We consider this question in a recently published paper. https://jair.org/index.php/jair/article/view/15579/27053 The proposed algorithm is applied to fairness analysis in credit-scoring.08 Nov 2024 14:34 +0000at://did:plc:2ekg64wcfidd3fj5pdnqchfc/app.bsky.feed.post/3lagymwwxun2s