Figure 1.

Figure 2.

Figure 3.

Figure 4.

Comparison of experimental results
| Model | Precision | Recall | F1 |
|---|---|---|---|
| LSTM | 35.8 | 42.4 | 38.8 |
| Bi-LSTM | 57.5 | 55.4 | 56.4 |
| Bi-LSTM+self-ATT | 65.2 | 56.8 | 60.7 |
| This algorithm | 70.2 | 58.3 | 63.7 |
“China… “Is valid
| Participles | The part of speech | How Net Semantics | BIO |
|---|---|---|---|
| China | ns | Local, national | B-ORG |
| Internet | n | The Internet | I-ORG |
| Finance | n | Business, money | I-ORG |
| Association | n | group | I-ORG |
| With | p | Function words | O |
| Ministry of Civil Affairs | nt | institutions | B-ORG |
| approval | v | Give one’s consent | O |
| Shanghai | ns | place | B-ADDR |
| registered | v | record | O |
| establishe | v | To establish | O |