Table 3 Difference in trends between the ratio of the power law to the long tail, ROI, and IOI
Year | Top 10 % | Bottom 70 % | ||||||
|---|---|---|---|---|---|---|---|---|
Ratio in total patents | Number of patents | ROI | IOI | Ratio in total patents | Number of patents | ROI | IOI | |
81–90 | 54.3 | 8091 | 11.69 | 1.14 | 29.2 | 4348 | 23.34 | 1.28 |
91–00 | 75.0 | 34,766 | 7.71 | 1.11 | 16.1 | 7467 | 28.70 | 1.42 |
01–10 | 69.1 | 59,088 | 14.42 | 1.20 | 20.8 | 17,787 | 36.80 | 1.55 |
Total | 69.5 | 100,586 | 11.97 | 1.16 | 20.1 | 29,134 | 32.94 | 1.48 |