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mkao006 / sws_imputation

Repository for implementing imputation for the Statistical Working System
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Assess the non-linearity in the trend of yield over time #30

Closed mkao006 closed 10 years ago

mkao006 commented 11 years ago

The current data set only spans 12 years and thus a linear trend is acceptable, however if we extend our our time frame to 60 years, non-linearity such as stagnant growth maybe observed, a smoothed spline mixed model may be preferred.

mkao006 commented 11 years ago

Non-linearity in the yield is commonly observed, at least in Cassava. This causes the current linear imputation to break down sometimes.

mkao006 commented 10 years ago

The effect of non-linearity is restricted by taking data only from 1980, additive mixed model is also in development for non-linearity