Least Absolute Deviation Estimate for Functional Coefficient Partially Linear Regression Models

Figure 5

(a) Fitted values of 𝑂_𝑡(𝑡=5,…,250) for gas data; (b) Predictive values 𝑂_𝑡(𝑡=251,…,296) for gas data. Dotted lines are fitted or predicted; solid lines are observed.

(a)

(b)