The concept of cost efficiency was introduced by Farrell (1957) as the ratio of factor minimal cost to the actual cost. Unlike technical efficiency, the cost efficiency measure takes into consideration changes in input mix also. The Farrell cost efficiency measure was extended by Fare et.al (1984) for the case of multiple inputs and outputs....

India was the first country to start a systematic development of long range forecasting techniques for estimating in advance the seasonal monsoon rainfall over the country. For forecasting rainfall on the basis of past values, a variety of time series models are available these are referred as Box-Jenkins methodology Box and Jenkins....

Efficiency rating of decision making units (DMUs) was long back identified as an important activity that helps both the producer and the policy maker. It requires that the DMUs are in competition, produce similar outputs combining similar inputs. Efficiency rating may be oriented or non-oriented....