| Number of eigenpairs | basic Heart | compact Heart | compact Heart | eigs | |||
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| k | time | iter. | time | iter. | time | iter. | time |
| 6 | 24.5 | 7 | 16.3 | 7 | 18.9 | 9 | 17.6 |
| 10 | 28.5 | 7 | 18.8 | 7 | 22.0 | 10 | 18.5 |
| 20 | 34.3 | 7 | 23.1 | 6 | 27.6 | 11 | 22.7 |
| 40 | 78.6 | 10 | 37.5 | 5 | 47.0 | 14 | 35.2 |
| 100 | 151.6 | 10 | 83.9 | 4 | 83.8 | 6 | 80.1 |
| 200 | 271.5 | 8 | 215.1 | 4 | 162.9 | 8 | 187.9 |
| 300 | 336.7 | 6 | 316.4 | 3 | 290.8 | 11 | 289.6 |
| 400 | 388.3 | 5 | 461.4 | 3 | 421.9 | 13 | 407.3 |
| 500 | 479.8 | 5 | 672.7 | 3 | 475.2 | 12 | 651.4 |
| 600 | 722.5 | 5 | 657.8 | 2 | 617.4 | 13 | 734.3 |