Table 1.
Tuning of the search engine regarding the prior art search task.
| Strategy | Tuning | P0 | MAP |
|---|---|---|---|
| Impact of the description field | Description | 2.20% | 1.34% |
| No description | 2.87% | 1.52% | |
| Impact of the metadata field | No metadata | 3.64% | 1.93% |
| Metadata on TAC | 3.63% | 1.92% | |
| Metadata on TACD | 2.87% | 1.52% | |
| Impact of the weighting model | PL2 | 2.87% | 1.52% |
| BM25 | 5.36% | 3.47% | |
| Impact of the co-citation network | Without re-ranking | 5.36% | 3.47% |
| With re-ranking | 6.76% | 4.22% | |
| Impact of the use of IPC codes | No IPC codes | 6.76% | 4.22% |
| IPC codes | 5.88% | 3.66% | |
The best tuning for each strategy is displayed in bold. P0 indicates the top-precision and MAP represents the mean average precision.