Online Learning Platform for Air Environment Detection and Career Planning Based on 5G Network

Table 2

GM(1, 1) model usage conditions.

Applicability

Meaningless

Not suitable for use

Residual error correction GM(1, 1) model

Use it with caution in short-term forecasts

Short-term forecasts, be used with caution in medium- and long-term forecasts

Can be used for long-term forecasting