
Figure 1
The framework of our Trigger Model System.

Figure 2
Entity relationship diagram.

Figure 3
Trigger model research procedure.
Table 1
Details of attributes.
| Attribute | Description |
|---|---|
| SKU | the unique identification number of the book |
| Searching record | how many times the book is searched daily |
| Clicking record | how many times the book’s webpage is clicked daily |
| Following record | how many times the book is followed daily |
| Comments | due to time limits, we use only a daily number of comments in this research |
| Reference price | the book’s original price |
| Dealing price | the book’s actual sold price |
| Previous sales | past sales |
Table 2
Details of prediction models.
| Model | Prediction Method | Variables | Environment |
|---|---|---|---|
| Model 1 | BPNN Model | previous sales, total attention, daily average price | MATLAB |
| Model 2 | GARCH Dynamic Model | previous sales, total attention, daily average price | EVIEWS |
| Model 3 | ELM Model | 10 Variables | MATLAB |

Figure 4
Trigger model prediction results.

Figure 5
Testing data set comparison results.
