• Professional Career

Professor Emeritus at Heriot-Watt University, United Kingdom: 2014-present.

Honorary Professor at National Dong Hwa University, Taiwan: 2011-present.

Professor Emeritus at National Graduate Institute for Policy Studies: 2008-present.

Professor Emeritus at Saitama University: 1999-Present.

Academic Fellow at National Graduate Institute for Policy Studies: 2006-2013.

Research Fellow at National Graduate Institute for Policy Studies: 2005-2006.

Professor at National Graduate Institute for Policy Studies: 1998-2005.

Professor at Saitama University, Graduate School of Policy Science: 1977-1988.

Associate Professor at Keio University, Faculty of Engineering: 1966-1977.

Associate Professor at Tokyo University of Agriculture and Engineering,Faculty of Engineering: 1963-1966.

Associate Professor at Tsuda-juku University, Faculty of Science: 1962-1963.

• Selected publications

1. “Evaluating the resource management and profitability efficiencies of US commercial banks from a dynamic network perspective,” Qian Long Kweh, Wen‑Min Lu, K Tone, Hsian‑Ming Liu, Financial Innovation, 10:19, 2024, DOI: 10.1186/s40854-023-00531-0
2. “Selecting slacks-based data envelopment analysis models,” M Toloo, K Tone, M Izadikhah, European Journal of Operational Research, 2022, DOI: 10.1016/j.ejor.2022.12.032
3. “Evaluating the potential efficiency gains from optimal industry configuration: A case of life insurance industry of India,” BK Sahoo, K Tone, Managerial and Decision Economics, 43 (8), 3996-4009, 2022, DOI:10.1002/mde.3642
4. “A dynamic performance evaluation of distress prediction models,” MM Mousavi, J Ouenniche, K Tone, Journal of Forecasting, 2022, DOI:10.1002/for.2915
5. “Alternative DEA models,” WW Cooper, LM Seiford, K Tone, Data Envelopment Analysis: A Comprehensive Text with Models, Applications, References and DEA-Solver Software, 2022, DOI: 10.1007/978-0-387-45283-8_4
6. “Scale Elasticity and Congestion,” WW Cooper, LM Seiford, K Tone, Data Envelopment Analysis: A Comprehensive Text with Models, Applications, References and DEA-Solver Software, 2022, DOI: 10.1007/978-0-387-45283-8_12
7. “An Alternative Approach to Dealing with the Composition Approach for Series Network Production Processes,” BK Sahoo, H Saleh, M Shafiee, K Tone, J Zhu, Asia-Pacific Journal of Operational Research, 38 (06), 2150004, 2021, DOI:10.1142/S0217595921500044
8. “Dealing with Desirable Inputs in Data Envelopment Analysis: A Slacks-based Measure Approach,” K Tone, American Journal of Operations Management and Information Systems 6 (4), 67-74, 2021, DOI:10.11648/j.ajomis.20210604.11
9. “The strict complementarity in linear fractional optimization,” M Mehdiloo, K Tone, MB Ahmadi, Iranian Journal of Numerical Analysis and Optimization, 11(2), 305-332, 2021,DOI: 10.22067/IJNAO.2021.11330.0
10. ”Nested dynamic network data envelopment analysis models with infinitely many decision making units for portfolio evaluation,” TS Chang, K Tone, CH Wu, European journal of operational research 291 (2), 766-781, 2021, DOI:10.1016/j.ejor.2020.09.044
11. ”Risk-adjusted banks' resource-utilization and investment efficiencies: does intellectual capital matter?,”QL Kweh, WM Lu, K Tone, M Nourani, Journal of Intellectual Capital, 2021, DOI: 10.1108/JIC-03-2020-0106
12. “Nested Dynamic Network Data Envelopment Analysis Models with Infinitely Many Decision Making Units for Portfolio Evaluation,” T.S Chang, K. Tone, C.H. Wu,European Journal of Operational Research,　October 2020, DOI: 10.1016/j.ejor.2020.09.044
13. “A Modified Slacks-Based Measure of Efficiency in Data Envelopment Analysis,”Tone, M. Toloo, M. Izadikhah, European Journal of Operational Research, May 2020. DOI:10.1016/j.ejor.2020.04.019.
14. “Handling negative data in slacks-based measure data envelopment analysis models,” K.Tone, T.SChang,C.H.Wu, European Journal of Operational Research, 282(2020)926-935.
15. “A Comparative Analysis of Two-Stage Distress Prediction Models,”M. M. Mousavi , J. Ouenniche , K. Tone Expert Systems With Applications,DOI: https://doi.org/10.1016/j.eswa.2018.10.053
16. “Modeling investments in the dynamic network performance of insurance companies,” K.Tone, Q.L.Kweh,W.M.Lu, I. W. K.Ting,Omega, https://doi.org/10.1016/j.omega.2018.09.005
17. Advances in DEA Theory and Applications: with Extensions to Forecasting Models, K. Tone (Ed.), John Wiley & Sons, 2017.
18. “Impact of the Local Public Hospital Reform on the efficiency of medium sized hospitals in Japan: an improved slacks-based measure DEA approach,” X. Zhang, K. Tone, Y. Lu, Health Services Research, DOI: 10.1111/1475-6773. 12676, 2017.
19. “On the Consistency of Slacks-based Measure-Max Model and Super-Slacks-based Measure Model,” K. Tone, Universal Journal of Management, 5(3), 160-165, 2017.
20. “An Out-of-Sample Evaluation Framework for DEA with Application in Bankruptcy Prediction,” J. Ouenniche and K. Tone, Annals of Operations Research, 2017.
21. “The efficiency of higher education institutions in England revised: com- paring alternative measures,” G. Johnes and K. Tone, Tertiary Education and Management,  DOI:10.1080/13583883.2016.1203457,  2016
22. “Data Envelopment Analysis as a Kaizen Tool:   SBM Variations    revisited,” Tone, Bulletin of Mathematical Sciences and Applications, 16, 49-61, 2016.
23. “Setting  handicaps  to  industrial  sectors  in  DEA  illustrated  by Ethiopian industry,” K. Hailu, K. Tone, Annals of Operations Research, DOI: 10.1007/s10479- 016-2225-1, 2016.
24. “DEA models involving future performance,” T.S. Chang, K. Tone, C.H. Wu, European Journal of Operational Research, DOI: 10.1016/j.ejor.2016.04.005. 2016.
25. “Finding a maximal element of a convex set through its characteristic cone: An application to finding a strictly complementary solution,” M.   Mehdiloozad, K. Tone, R. Askarpour, M. Ahmadi, Computational and Applied Mathematics,  DOI:  10.1007/s40314-016-0324-x,  2016.
26. “DEA Scores ’Confidence Intervals with Past-Present and Past-Present- Future based Resampling,” K. Tone, J. Ouenniche, American Journal of Operations Research, 6, 121-135, 2016.
27. “How to deal with Non-convex Frontiers in Data Envelopment Analysis,” K. Tone, M. Tsutsui, Journal of Optimization Theory and Applications, DOI:10.1007/s10957-014-0626-3,166(3),1002-1028, 2015.
28. “Cost, revenue and profit efficiency measurement in DEA: A directional distance function approach,” M. Mehdiloozad, B.K. Sahoo, K. Tone European Journal of Operational Research, forthcoming, 2014.
29. “Decomposing technical efficiency and scale elasticity in two-stage network DEA,” B.K. Sahoo, J. Zhu, K. Tone, B.M. Klemen, European Journal of Operational Research, forthcoming, 2014
30. “Past-present-future intertemporal DEA models,” T.S. Chang, K. Tone, C.H.Wu, Journal of Operational Research Society, doi: 10.1057/jors.2013.139.
31. “Dynamic DEA with network structure: A Slacks-based Measure Approach,” K. Tone, M. Tsutsui, Omega, 42, 124-1131, 2014.
32. “Estimation of the efficiency of Japanese hospitals using a dynamic and network data envelopment analysis model,” H. Kawaguchi, K. Tone, M. Tsutsui, Health Care Management Science, doi: 10.1007/s10729-013-9248-9, 2013.
33. “Non-parametric measurement of economies of scale and scope in noncompetitive environment with price uncertainty,” B.K. Sahoo, K. Tone, Omega, 41, 97-111, 2013.
34.  “Returns to growth in a nonparametric DEA approach , ” B.K. Sahoo, K. Kerstens , K. Tone, International Transactions in Operational Research, 19, 463-486, 2012.
35. “Ownership-specified network DEA models,” T.S. Chang, K. Tone, Q.L.Wei, Annals of Operations Research, doi: 10.1007/s10479-011-0949-5, 2011.
36. “An efficiency measure of desirable and undesirable outputs in DEA and its application to US electric utilities,” K. Tone, M. Tsutsui, Journal of Centrum Cathedra, 4, 2, 236-249, 2011.
37. “Dynamic DEA: A Slacks-based Measure Approach,” K. Tone, M. Tsutsui, Omega, 38, 145-156, 2010.
38. “Variations on the theme of slacks-based measure of efficiency in DEA,” K. Tone, European Journal of Operational Research, 200, 901-907, 2010.
39. “An epsilon-based measure of efficiency in DEA: A third pole of technical efficiency,” K. Tone, M. Tsutsui, European Journal of Operational Research, 207, 1554-1563, 2010.
40. “Network DEA: A Slacks-based Measure Approach,” K. Tone, M. Tsutsui, European Journal of Operational Research, 197, 243-252, 2009.
41. “Decomposing Capacity Utilization in Data Envelopment Analysis: An Application to Banks in India, B. K. Sahoo, K. Tone, European Journal of Operational Research, 195(2), 575-594, 2009.
42. “Radial and Non-radial Decompositions of Profit Change: With an Application to Indian Banking, B. K. Sahoo, K. Tone, European Journal of Operational Research, 196(3), 1130-1146, 2009.
43. “Bridging Radial and Non-radial Measures of Efficiency in DEA,” K. Tone, N.K. Avkiran, M. Tsutsui, Annals of Operations Research, 164, 127-138, 2008.
44. “A Multi-stage Method to Measure Efficiency and its Application to Japanese Banking Industry,” K. Tone, J. Liu, Socio-Economic Planning Sciences 42, 75-91, 2008.
45. “Some Models and Measures for Evaluating Performances with DEA: Past Accomplishments and Future Prospects,” W. W. Cooper, L.M. Seiford, K. Tone , J. Zhu, Journal of Productivity Analysis 28, 151-163, 2007.
46. “Decomposition of Cost Efficiency and its Application to Japanese-US Electric Utility Companies,” K. Tone, M. Tsutsui, Socio-Economic Planning Sciences 41, 91-106, 2007.
47. Data Envelopment Analysis: A Comprehensive Text with Models, Applications, References and DEA-Solver Software, Second Edition, W.W. Cooper, L.M. Seiford, K. Tone, Springer-Verlag, 490 pages, 2006.
48. “Re-examining Scale Elasticity in DEA,” K. Tone, B.K. Sahoo, Annals of Operations Research, 145, 69-87, 2006.
49. Introduction to Data Envelopment Analysis and Its Uses: with DEA-Solver Software and References, W.W. Cooper, L.M. Seiford, K. Tone, Springer-Verlag, 354 pages, 2005.
50. “Evaluating Cost Efficiency and Returns to Scale in the Life Insurance Corporation of India Using Data Envelopment Analysis,” K. Tone, B.K. Sahoo, Socio-Economic Planning Sciences 39, 261-285, 2005.
51. “Degree of Scale Economies and Congestion: A Unified DEA Approach,” K. Tone, B. K. Sahoo, European Journal of Operational Research, 158, 755-772, 2004.
52. “Malmquist Productivity Index,” Chapter 8 of Handbook on Data Envelopment Analysis, Cooper, W.W., Seiford, L.M. and Zhu, J., (eds.) Kluwer Academic Publishers, 2004.
53. “A Comparative Site Evaluation Study for Relocating Japanese Government Agencies out of Tokyo,” K. Tone, Y. Takamura, Socio-Economic Planning Sciences, 37, pp.85-102, 2003.
54. “Scale, Indivisibilities and Production Function in Data Envelopment Analysis,” K. Tone, B.K. Sahoo, International Journal of Production Economics, 84, pp.165-192, 2003.
55. “A Slacks-based Measure of Super-efficiency in Data Envelopment Analysis,” K. Tone, European Journal of Operational Research, 143, pp.32-41, 2002.
56. “A Strange Case of the Cost and Allocative Efficiencies in DEA,” K. Tone, Journal of the Operational Research Society, 53, pp.1225-1231, 2002.
57. “Sensitivity and Stability Analysis in DEA: Some Recent Developments,” K. Tone, W.W. Cooper, S. Li, L.M. Seiford, R.M. Thrall, J. Zhu) Journal of Productivity Analysis, 15, pp.217-246, 2001.
58. “On Returns to Scale under Weight Restrictions in DEA,” K. Tone, Journal of Productivity Analysis, 16, pp.31-47, 2001.
59. “A Slacks-based Measure of Efficiency in Data Envelopment Analysis,” K. Tone, European Journal of Operational Research, 130, pp.498-509, 2001.
60. Data Envelopment Analysis: A Comprehensive Text with Models, Applications, References and DEA-Solver Software (with W.W. Cooper and L.M. Seiford), Kluwer Academic Publishers, 1999.
61. “A Search Model with Subjective Judgements: Auditing of Incorrect Declarations,” K. Tone, S. Iwasaki, Omega, 26, pp.249-261, 1998.
62. “Measures of Inefficiency in Data Envelopment Analysis and Stochastic Frontier Estimation,” K. Tone, W.W. Cooper, European Journal of Operational Research, 99, pp.72-88, 1997.
63. “Several Algorithms to Determine Multipliers in Use in Cone-Ratio Envelopment Approaches to Efficiency Evaluations in DEA,” K. Tone, in
64. Computational Approaches to Economic Problems edited by H. Amman, B. Rustem and A. Whinston, Kluwer Academic Publishers, pp.91-109, 1997.
65. “A Simple Characterization of Returns to Scale in Data Envelopment Analysis,” K. Tone, Journal of the Operations Research Society of Japan, 39, pp.604-613, 1996.
66. “An e -free DEA and a New Measure of Efficiency,” K. Tone, Journal of the Operations Research Society of Japan, 36, pp.167-174, 1993.
67. “An Active-Set Strategy in an Interior Point Method for Linear Programming,” K. Tone, Mathematical Programming, 59, pp.345-360, 1993.
68. “On DEA Models,” K. Tone, Communications of the Operations Research Society of Japan, 38, pp.34-40, 1993.
69. “Remarks on Potential versus Barrier Function Methods for Linear Programming,” K. Tone, Journal of the Operations Research Society of Japan, 34, pp.391-403, 1991.
70. “An Efficiency Analysis of Public vs. Private Bus Transportation Enterprises,” K. Tone, Operations Research '90, edited by H.E. Bradley, Pergamon Press, pp.357-366, 1991.
71. “Site Selection for a Large Scale Integrated Circuit Factory,” K. Tone, S. Yanagisawa, The Analytic Hierarchy Process, edited by B.L. Golden, E.A. Wasil and P.T. Harker, Springer-Verlag, 242-250, 1989.
72. “A Comparative Study on AHP and DEA,” K. Tone, Policy and Information, 13, pp.57-63, 1989.
73. “A Cost Information System for R&D and Production Management Program as Applied to a Solar Cell Development Project,” K. Tone, Operational Research '84, edited by J.P. Brans, North-Holland, pp.531-545, 1985.
74. “Revisions of Constraint Approximations in the Successive QP Method for Nonlinear Programming Problems,” K. Tone, Mathematical Programming, 26, pp.144-152, 1983.

• Social contributions

President of the Operations Research Society of Japan: 1996-1998.

Editorial Board of Omega.

Editorial Board of The Journal of Data Envelopment Analysis .

Editorial Board of Socio-Economic Planning Sciences.

Editorial Board of Journal of Optimization Theory and Applications.

Editorial Board of Encyclopedia of OR/MS (Kluwer Academic Publishers).

Editorial Board of Metamorphosis (Indian Institute of Management).

Editor-in-Chief, Journal of the Operations Research Society of Japan: 1976-1978.

• Other notable activities or achievements

JSPS Grants-in-Aid for Scientific Research, 2005-2006

JSPS Grants-in-Aid for Scientific Research, 2007-2009

JSPS Grants-in-Aid for Scientific Research, 2010-2012

JSPS Grant-in-Aids for Scientific Research, 2013-2015

• Link

Kaoru Tone's CV