01222nam a2200169 a 450000100080000000500110000800800410001910000220006024501410008226000850022352006480030865000260095665300250098265300080100770000200101570000170103516594172011-09-20       2009    bl uuuu     u00u1 u    #d1 aSOUZA, G. da S. e  aComputing confidence intervals for output oriented DEA modelsban application to agricultural research in Brazil.h[electronic resource]  aIn: SIMPÓSIO BRASILEIRO DE PESQUISA OPERACIONAL, 41., 2009, Porto Seguro.c2009  aWe define and model the research production at Embrapa, the major Brazilian institution responsable for applied agricultural research. The main theoretical framework is Data Envelopment Analysis - DEA. We explore the economic interpretation and the statistical properties of these models to compute confidence intervals for output oriented efficiency measurements, based on a parametric flexible model, defined by the truncated normal distribution. These results provide a better insight on the efficiency classification and allow comparison among the DMUs involved int ehe evaluation process taking into account inefficiency random variation.  aagricultural research  aConfidence intervals  aDEA1 aSOUZA, M. O. de1 aGOMES, E. G.