Masashi Okamoto

1.1k total citations
38 papers, 710 citations indexed

About

Masashi Okamoto is a scholar working on Statistics and Probability, Artificial Intelligence and Surgery. According to data from OpenAlex, Masashi Okamoto has authored 38 papers receiving a total of 710 indexed citations (citations by other indexed papers that have themselves been cited), including 15 papers in Statistics and Probability, 6 papers in Artificial Intelligence and 5 papers in Surgery. Recurrent topics in Masashi Okamoto's work include Advanced Statistical Methods and Models (12 papers), Bayesian Methods and Mixture Models (5 papers) and Spectroscopy and Chemometric Analyses (4 papers). Masashi Okamoto is often cited by papers focused on Advanced Statistical Methods and Models (12 papers), Bayesian Methods and Mixture Models (5 papers) and Spectroscopy and Chemometric Analyses (4 papers). Masashi Okamoto collaborates with scholars based in Japan and United States. Masashi Okamoto's co-authors include Takemi Yanagimoto, Nell Sedransk, Hideto Nakajima, Katsuya Hata, Yuji Nishikawa, Keiko Yodoi, Tomofumi Takaya, Seinosuke Kawashima, Tomoyuki Kita and Yoichi Kijima and has published in prestigious journals such as Biometrika, Mathematics of Computation and The Annals of Statistics.

In The Last Decade

Masashi Okamoto

34 papers receiving 611 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Masashi Okamoto Japan	11	398	207	104	69	62	38	710
Jack Carl Kiefer United States	10	219 0.6×	126 0.6×	158 1.5×	37 0.5×	103 1.7×	18	548
T. Wagner United States	16	485 1.2×	603 2.9×	106 1.0×	128 1.9×	82 1.3×	34	1.1k
P. L. Davies Germany	12	655 1.6×	113 0.5×	62 0.6×	90 1.3×	16 0.3×	34	944
Alexander Goldenshluger Israel	17	247 0.6×	154 0.7×	121 1.2×	105 1.5×	26 0.4×	41	645
Aldo Goia Italy	10	368 0.9×	176 0.9×	132 1.3×	39 0.6×	20 0.3×	22	619
Michael E. Tarter United States	12	374 0.9×	214 1.0×	27 0.3×	44 0.6×	11 0.2×	55	758
Onureena Banerjee United States	4	472 1.2×	423 2.0×	51 0.5×	79 1.1×	59 1.0×	5	1.0k
Lawrence C. Rafsky United States	6	221 0.6×	232 1.1×	63 0.6×	95 1.4×	26 0.4×	6	599
L. R. Haff United States	9	414 1.0×	116 0.6×	60 0.6×	38 0.6×	22 0.4×	16	591
B. K. Ghosh United States	15	440 1.1×	162 0.8×	185 1.8×	16 0.2×	56 0.9×	49	892

Countries citing papers authored by Masashi Okamoto

Since Specialization

Citations

This map shows the geographic impact of Masashi Okamoto'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 Masashi Okamoto with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Masashi Okamoto more than expected).

Fields of papers citing papers by Masashi Okamoto

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Masashi Okamoto. 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 Masashi Okamoto. The network helps show where Masashi Okamoto may publish in the future.

Co-authorship network of co-authors of Masashi Okamoto

This figure shows the co-authorship network connecting the top 25 collaborators of Masashi Okamoto. A scholar is included among the top collaborators of Masashi Okamoto 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 Masashi Okamoto. Masashi Okamoto 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

Okita, Yasutaka, et al.. (2024). Pneumocephalus and Cerebral Abscess in Granulomatosis With Polyangiitis. The Journal of Rheumatology. 51(8). 832–832.

Takaya, Tomofumi, Yoshio Takéuchi, Hideto Nakajima, et al.. (2008). The usefulness of transesophageal echocardiographic observation during chemotherapy for cardiac metastasis of non-Hodgkin lymphoma complicated with left ventricular diastolic collapse. Journal of Cardiology. 53(3). 447–452. 7 indexed citations

Ito, Osamu, et al.. (2008). Validation of an FE Lower Limb Model for a Child Pedestrian by Means of Accident Reconstruction. SAE International Journal of Passenger Cars - Mechanical Systems. 1(1). 971–984. 2 indexed citations

Hirose, K., et al.. (1998). Kr<SUB>2</SUB>* Excimer Photon Source by Burst Driving Method. JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN. 82(Appendix). 86–86. 1 indexed citations

Tanaka, Toshihiro, Shigeta Hara, & Masashi Okamoto. (1998). The Wettabilities of Graphite by Liquid Carbon-saturated Fe-Cu, Fe-Sn and Fe-S Alloys. Tetsu-to-Hagane. 84(1). 25–30. 2 indexed citations

Okamoto, Masashi. (1994). The Guttman effect of a linear trait in Hayashi's third method of quantification. Medical Entomology and Zoology. 39. 523–535. 3 indexed citations

Okamoto, Masashi. (1991). NUMERICAL EXPERIMENTS ON THE MODEL-REPRODUCIBILITY OF SOME PROCEDURES IN MULTIVARIATE ANALYSIS. Kodo Keiryogaku (The Japanese Journal of Behaviormetrics). 18(2). 47–55. 1 indexed citations

Okamoto, Masashi. (1988). THE NUMBER-OF-FACTORS PROBLEM IN LEAST-SQUARES FACTOR ANALYSIS WITH A RANDOM LOADING MODEL. 1(1). 1–15.

Okamoto, Masashi, et al.. (1985). Experimental comparison of least-squares and maximum likelihood methods in factor analysis. Statistics & Probability Letters. 3(6). 287–293. 9 indexed citations

10.

Okamoto, Masashi, et al.. (1980). Linear prediction in the factor analysis model. Biometrika. 67(2). 482–484. 10 indexed citations

11.

Okamoto, Masashi, et al.. (1971). Asymptotic expansion of the distribution of the Z statistic in discriminant analysis. Journal of Multivariate Analysis. 1(3). 294–307. 16 indexed citations

12.

Okamoto, Masashi, et al.. (1970). The Classification Statistic $W^\ast$ in Covariate Discriminant Analysis. The Annals of Mathematical Statistics. 41(5). 1491–1499. 13 indexed citations

13.

Okamoto, Masashi. (1963). Chi-square statistic based on the pooled frequencies of several observations. Biometrika. 50(3-4). 524–528. 3 indexed citations

14.

Okamoto, Masashi. (1961). Discrimination for variance matrices. OUKA (Osaka University Knowledge Archive) (Osaka University). 13(1). 1–39. 27 indexed citations

15.

Okamoto, Masashi, et al.. (1961). Test of independence in intraclass 2×2 tables. Biometrika. 48(1-2). 181–190. 4 indexed citations

16.

Okamoto, Masashi. (1960). An Inequality for the Weighted Sum of $ x^2 $ Variates. Kyushu University Institutional Repository (QIR) (Kyushu University). 9(2/3). 69–70. 13 indexed citations

17.

Okamoto, Masashi. (1955). Fit of a Poisson Distribution by the Index of Dispersion. OUKA (Osaka University Knowledge Archive) (Osaka University). 7(1). 7–13. 1 indexed citations

18.

Okamoto, Masashi. (1952). Unbiasedness in the test of goodness of fit. OUKA (Osaka University Knowledge Archive) (Osaka University). 4(2). 211–214. 2 indexed citations

19.

Okamoto, Masashi. (1952). Some combinatorial tests of goodness of fit. OUKA (Osaka University Knowledge Archive) (Osaka University). 4(2). 215–228. 1 indexed citations

20.

Okamoto, Masashi. (1952). On a non-parametric test. OUKA (Osaka University Knowledge Archive) (Osaka University). 4(1). 77–85. 8 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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