Table 4 The similarity of five representative countries/regions in TP and PCT
From: Characterizing patent big data upon IPC: a survey of triadic patent families and PCT applications
Indicators | Global | US | JP | DE | EP | CN |
|---|---|---|---|---|---|---|
The number of dimensions | 36,610 | 1823 | 1235 | 1089 | 765 | 657 |
Similarity | 0.935 | 0.972 | 0.970 | 0.892 | 0.987 | 0.978 |