Ryo Okui

1.2k total citations
43 papers, 685 citations indexed

About

Ryo Okui is a scholar working on Economics and Econometrics, General Economics, Econometrics and Finance and Statistics and Probability. According to data from OpenAlex, Ryo Okui has authored 43 papers receiving a total of 685 indexed citations (citations by other indexed papers that have themselves been cited), including 22 papers in Economics and Econometrics, 17 papers in General Economics, Econometrics and Finance and 11 papers in Statistics and Probability. Recurrent topics in Ryo Okui's work include Monetary Policy and Economic Impact (17 papers), Spatial and Panel Data Analysis (17 papers) and Statistical Methods and Inference (9 papers). Ryo Okui is often cited by papers focused on Monetary Policy and Economic Impact (17 papers), Spatial and Panel Data Analysis (17 papers) and Statistical Methods and Inference (9 papers). Ryo Okui collaborates with scholars based in Japan, United States and South Korea. Ryo Okui's co-authors include Tanjim Hossain, Qingfeng Liu, Guido M. Kuersteiner, Yoonseok Lee, Yoon‐Jae Whang, Sokbae Lee, Wendun Wang, Robin L. Lumsdaine, Dylan S. Small and Zhiqiang Tan and has published in prestigious journals such as Circulation Research, Econometrica and Journal of Econometrics.

In The Last Decade

Ryo Okui

36 papers receiving 658 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Ryo Okui Japan	13	285	266	151	107	105	43	685
Andres Santos United States	13	208 0.7×	269 1.0×	98 0.6×	44 0.4×	28 0.3×	24	523
Demián Pouzo United States	10	203 0.7×	228 0.9×	144 1.0×	48 0.4×	11 0.1×	27	487
Toru Kitagawa United Kingdom	9	146 0.5×	182 0.7×	53 0.4×	59 0.6×	18 0.2×	25	369
Stephen R. Cosslett United States	6	304 1.1×	243 0.9×	78 0.5×	32 0.3×	5 0.0×	9	583
Luciano I. de Castro United States	13	318 1.1×	28 0.1×	57 0.4×	228 2.1×	61 0.6×	60	500
Sanghack Lee South Korea	12	258 0.9×	36 0.1×	33 0.2×	202 1.9×	250 2.4×	51	504
Nicolas Lambert United States	13	220 0.8×	34 0.1×	14 0.1×	201 1.9×	37 0.4×	49	490
Yoram Kroll Israel	14	536 1.9×	36 0.1×	145 1.0×	365 3.4×	37 0.4×	40	1.1k
Christopher L. Cavanagh United States	6	252 0.9×	122 0.5×	182 1.2×	69 0.6×	8 0.1×	7	461
Michel Lubrano France	13	384 1.3×	85 0.3×	261 1.7×	61 0.6×	11 0.1×	35	644

Countries citing papers authored by Ryo Okui

Since Specialization

Citations

This map shows the geographic impact of Ryo Okui's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ryo Okui with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ryo Okui more than expected).

Fields of papers citing papers by Ryo Okui

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ryo Okui. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ryo Okui. The network helps show where Ryo Okui may publish in the future.

Co-authorship network of co-authors of Ryo Okui

This figure shows the co-authorship network connecting the top 25 collaborators of Ryo Okui. A scholar is included among the top collaborators of Ryo Okui based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ryo Okui. Ryo Okui is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Okui, Ryo, Yoshikazu Sano, & M. Ogawa. (2025). Non-destructive estimation of three-dimensional residual stresses in welded pipes using X-ray diffraction by optimizing the approximation function of eigenstrain. Mechanical Engineering Journal. 12(1). 24–460. 1 indexed citations

Hossain, Tanjim & Ryo Okui. (2024). Belief formation under signal correlation. Games and Economic Behavior. 146. 160–183.

Okui, Ryo, et al.. (2024). Confidence set for group membership. Quantitative Economics. 15(2). 245–277. 2 indexed citations

Lumsdaine, Robin L., Ryo Okui, & Wendun Wang. (2020). Estimation of Panel Group Structure Models with Structural Breaks in Group Memberships and Coefficients. SSRN Electronic Journal. 4 indexed citations

Feng, Yang, Qingfeng Liu, & Ryo Okui. (2019). On the sparsity of Mallows model averaging estimator. Economics Letters. 187. 108916–108916. 13 indexed citations

Ogura, Yoshiaki, Ryo Okui, & Yukiko Saito. (2019). Online Appendix for 'Network Motivated Lending Decisions: A Rationale for Forbearance Lending'. SSRN Electronic Journal. 1 indexed citations

Okui, Ryo, et al.. (2019). Kernel estimation for panel data with heterogeneous dynamics. Econometrics Journal. 23(1). 156–175. 10 indexed citations

Lee, Sokbae, Ryo Okui, & Yoon‐Jae Whang. (2017). Doubly robust uniform confidence band for the conditional average treatment effect function. Journal of Applied Econometrics. 32(7). 1207–1225. 31 indexed citations

Ogura, Yoshiaki, Ryo Okui, & Yukiko Saito. (2016). Network-Motivated Lending Decisions. SSRN Electronic Journal. 1 indexed citations

10.

Okui, Ryo. (2013). Asymptotically Unbiased Estimation of Autocovariances and Autocorrelations with Panel Data in the Presence of Individual and Time Effects. 6(2). 129–181. 8 indexed citations

11.

Liu, Qingfeng, et al.. (2013). Generalized Least Squares Model Averaging. SSRN Electronic Journal. 1 indexed citations

12.

Lee, Yoonjin, Ryo Okui, & Mototsugu Shintani. (2013). Asymptotic Inference for Dynamic Panel Estimators of Infinite Order Autoregressive Processes. SSRN Electronic Journal. 3 indexed citations

13.

Lee, Yoonseok & Ryo Okui. (2011). Hahn–Hausman test as a specification test. Journal of Econometrics. 167(1). 133–139. 23 indexed citations

14.

Lee, Yoonseok & Ryo Okui. (2009). A Specification Test for Instrumental Variables Regression with Many Instruments. SSRN Electronic Journal. 7 indexed citations

15.

Hitomi, Kohtaro, Yoshihiko Nishiyama, & Ryo Okui. (2008). A PUZZLING PHENOMENON IN SEMIPARAMETRIC ESTIMATION PROBLEMS WITH INFINITE-DIMENSIONAL NUISANCE PARAMETERS. Econometric Theory. 24(6). 1717–1728. 10 indexed citations

16.

Okui, Ryo. (2008). Testing serial correlation in fixed effects regression models based on asymptotically unbiased autocorrelation estimators. Mathematics and Computers in Simulation. 79(9). 2897–2909. 8 indexed citations

17.

Okui, Ryo. (2007). Testing Serial Correlation in Fixed Effects Regression Models: the Ljung-Box Test for Panel Data. 971.

18.

Ohsumi, Akira, et al.. (2007). A method of detection of signals corrupted by nonstationary random noise via stationarization of the data. Electronics and Communications in Japan (Part III Fundamental Electronic Science). 90(8). 29–38.

19.

Okui, Ryo. (2005). Instrumental variable estimation with many moment conditions with applications to dynamic panel data models. Circulation Research. 6(4). 468–75. 1 indexed citations

20.

Okui, Ryo, et al.. (2005). Detection of signals in nonstationary random noise VIA stationarization and stationarity test. j86 a. 587–590. 2 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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