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Figure 2.
Figure 3.
Figure 4.
Figure 5.
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Figure 7.
Figure 8.
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 |
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 |