Comparison of Lasso and stepwise regression technique for wheat yield prediction

Authors

  • SUDHEER KUMAR Agromet Advisory Service Division, India Meteorological Department-New Delhi
  • S.D. ATTRI Agromet Advisory Service Division, India Meteorological Department-New Delhi
  • K.K. SINGH Agromet Advisory Service Division, India Meteorological Department-New Delhi

DOI:

https://doi.org/10.54386/jam.v21i2.231

Keywords:

Weather variables, stepwise regression, lasso regression, cross validation, forecast model

Abstract

Multiple regression approach has been used to forecast the crop production widely. This study has been undertaken to evaluate the performance of stepwise and Lasso (Least absolute shrinkage and selection operator) regression technique in variable selection and development of wheat forecast model for crop yield using weather data and wheat yield for the period of 1984-2015, collected from IARI, New Delhi. Statistical parameters viz. R2, RMSE, and MAPE were 0.81, 195.90 and 4.54 per cent respectively with stepwise regression and 0.95, 99.27, 2.7 percentage, respectively with Lasso regression. Forecast models were validated during 2013-14 and 2014-15. Prediction errors were -8.5 and 10.14 per cent with stepwise and 1.89 and 1.64 percent with the Lasso. This shows that performance of Lasso regression is better than stepwise regression to some extent.

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Published

01-06-2019

How to Cite

SUDHEER KUMAR, S.D. ATTRI, & K.K. SINGH. (2019). Comparison of Lasso and stepwise regression technique for wheat yield prediction. Journal of Agrometeorology, 21(2), 188–192. https://doi.org/10.54386/jam.v21i2.231

Issue

Section

Research Paper

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