Keiichi Ochiai

Yokohama City University

Professor

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SCHOLARLY PAPERS

2

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Scholarly Papers (2)

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1.

Causal Effect of Lottery Promotions on Post-Win Payments: Evidence from a Large Field Experiment

Innovative Marketing, Volume 21, Issue 2, 2025

Number of pages: 13 Posted: 06 Aug 2025

Kohsuke Kubota, Keiichi Ochiai and Takahiro Hoshino

NTT DOCOMO, INC., Yokohama City University and Keio University

Downloads 26 (1,372,601)

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2.

Bayesian Time-Varying Meta-Analysis via Hierarchical Mean-Variance Random-effects Models

Number of pages: 18 Posted: 27 May 2026

Kohsuke Kubota, Shonosuke Sugasawa, Keiichi Ochiai and Takahiro Hoshino

NTT DOCOMO, INC., Keio University, Yokohama City University and Keio University

Downloads 11 (1,548,648)

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