Figure 1.
Simple Bayesian network
Figure 2.
The operation operators of quantum probabilistic graphical models
Figure 3.
Quantum Bayesian network
Figure 4.
Digital library information retrieval system based on artificial intelligence
Figure 5.
Comparison of retrieval efficiency among different methods
Table 1.
The number of documents when the query is for five terms
| Query | Number of documents | ||
|---|---|---|---|
| S1 | Actually useful | S4 | |
| 1 | 5 | 5 | 2.93 |
| 2 | 7 | 6 | 0.18 |
| 3 | 7 | 7 | 2.51 |
| 4 | 6 | 5 | 2.62 |
| 5 | 8 | 7 | 1.49 |
| 6 | 5 | 3 | 0.48 |
| 7 | 9 | 7 | 2.32 |
| 8 | 6 | 5 | 0.16 |
| 9 | 6 | 5 | 2.67 |
| 10 | 7 | 7 | 1.75 |
| 11 | 7 | 6 | 1.78 |
| 12 | 9 | 8 | 1.96 |
| 13 | 8 | 8 | 1.82 |
| 14 | 7 | 6 | 2.33 |
| 15 | 9 | 7 | 1.39 |
Table 2.
The number of documents and average similarity
| Query | Number of documents | Average similarity | ||||
|---|---|---|---|---|---|---|
| S1 | Actually useful | S4 | S1 | Actually useful | S4 | |
| 1 | 32.58 | 30 | 9.4 | 0.73 | 0.76 | 0.69 |
| 2 | 30.51 | 25 | 0.12 | 0.74 | 0.75 | 0.69 |
| 3 | 29 | 20 | 2.85 | 0.84 | 0.84 | 0.61 |
| 4 | 27.32 | 27 | 8.31 | 0.75 | 0.76 | 0.64 |
| 5 | 12.85 | 9 | 7.11 | 0.81 | 0.82 | 0.70 |
| 6 | 28.45 | 25 | 15 | 0.79 | 0.80 | 0.62 |
| 7 | 28 | 28 | 20.88 | 0.84 | 0.86 | 0.63 |
| 8 | 33 | 30 | 10.46 | 0.79 | 0.80 | 0.66 |
| 9 | 17.06 | 15 | 13 | 0.79 | 0.80 | 0.62 |
| 10 | 44.13 | 40 | 34.24 | 0.74 | 0.74 | 0.64 |
| 11 | 28 | 27 | 2.79 | 0.84 | 0.84 | 0.67 |
| 12 | 26.13 | 23 | 7.01 | 0.72 | 0.72 | 0.61 |
| 13 | 32 | 29 | 7.86 | 0.71 | 0.70 | 0.67 |
| 14 | 27.93 | 26 | 4.87 | 0.8 | 0.82 | 0.69 |
| 15 | 24 | 22 | 9.11 | 0.78 | 0.80 | 0.63 |
Figure 6.
Operational efficiency assessment
Figure 7.
The retrieval accuracy of the three retrieval systems
Figure 8.
The retrieval time and quantity of the three models