Ueda Tohru

Tohru Ueda

Information about the author Tohru Ueda will soon be added to the site.
Found 8 papers in total
Measurement of simultaneous scale and mix changes in inputs and outputs using DEA facets and RTS
Measurement of simultaneous scale and mix changes in inputs and outputs using DEA facets and RTS
2012
We show a new use of the efficient facets in DEA. Specifically, once we have...
Determination of bounds in DEA assurance region method: Its application to evaluation of baseball players and chemical companies
Determination of bounds in DEA assurance region method: Its application to evaluation of baseball players and chemical companies
2009
In Data Envelopment Analysis (DEA) many optimal weights (multipliers) for inputs and...
Analysis of successive categories data using mathematical programming
Analysis of successive categories data using mathematical programming
2007
Complex procedures are used in the formulation of dual scaling for successive...
Estimation of firms efficiencies using a Kalman filter and stochastic efficiency model
Estimation of firms efficiencies using a Kalman filter and stochastic efficiency model
2005
The efficiencies of firms should be evaluated, based on their historical financial...
Application of principal component analysis for parsimonious summarization of DEA inputs and/or outputs
Application of principal component analysis for parsimonious summarization of DEA inputs and/or outputs
1997
In Data Envelopment Analysis, when there are more inputs and outputs, there are more...
A study of capacity expansion problems based on fuzzy dynamic programming
A study of capacity expansion problems based on fuzzy dynamic programming
1995
This paper discusses capacity expansion problems for telecommunication network...
Statistical analysis of how telecommunication services are used in households
Statistical analysis of how telecommunication services are used in households
1991
The results of the ‘Survey on telecommunication use in households and...
A study of a competitive Bass model which takes into account competition among firms
A study of a competitive Bass model which takes into account competition among firms
1990
Competition in some telecommunication services has emerged in Japan since deregulation...
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