Research Article
Technology Topic Identification and Trend Prediction of New Energy Vehicle Using LDA Modeling
Table 1
Determination of model parameters
and
q.
| | Model | Autocorrelation function (ACF) | Partial autocorrelation function (PACF) |
| | AR() | Trailing | -step posttruncation tail | | MA(q) | q-step posttruncation tail | Trailing | | ARMA(, q) | q-step rear trailing | -step rear trailing |
|
|
