7 papers
Auto-Regressive Standard Precipitation Index: A Bayesian Approach for Drought Characterization
Soham Ghosh, Sujay Mukhoti, Pritee Sharma
This study proposes Auto-Regressive Standardized Precipitation Index (ARSPI) as a novel alternative to the traditional Standardized Precipitation Index (SPI) for measuring drought…
Impact of rainfall risk on rice production: realized volatility in mean model
Soham Ghosh, Sujay Mukhoti, Pritee Sharma
Rural economies are largely dependent upon agriculture, which is greatly determined by climatic conditions such as rainfall. This study aims to forecast agricultural production in…
Non-parametric generalised newsvendor model
Soham Ghosh, Sujay Mukhoti
In classical newsvendor model, piece-wise linear shortage and excess costs are balanced out to determine the optimal order quantity. However, for critical perishable commodities, s…
A new generalized newsvendor model with random demand
Soham Ghosh, Mamta Sahare, Sujay Mukhoti
Newsvendor problem is an extensively researched topic in inventory management. In this class of inventory problems, shortage and excess costs are considered to be proportional to t…
A New Class of Discrete-time Stochastic Volatility Model with Correlated Errors
Sujay Mukhoti, Pritam Ranjan
In an efficient stock market, the returns and their time-dependent volatility are often jointly modeled by stochastic volatility models (SVMs). Over the last few decades several SV…
Inverse problem for time-series valued computer model via scalarization
Pritam Ranjan, Mark Thomas, Holger Teismann +1
For an expensive to evaluate computer simulator, even the estimate of the overall surface can be a challenging problem. In this paper, we focus on the estimation of the inverse sol…