Table 1. Top 10 authors, by various network measures.
| Top 10 authors by H-Index | Top 10 authors by 1st Order Connections | ||
| H-Index | Name of author | Name of author | Connections |
| 94 | Fehlings M. | Seichi A. | 45 |
| 84 | Vaccaro A. | Takeshita K. | 42 |
| 76 | Yoshikawa H. | Taguchi T. | 39 |
| 76 | Kawaguchi H. | Kato T. | 36 |
| 73 | Toyama Y. | Toyama Y. | 36 |
| 70 | Shaffrey C. | Riew K. | 36 |
| 67 | McGirt M. | Yamazaki M. | 33 |
| 67 | Albert T. | Fehlings M. | 33 |
| 67 | Sonntag V. | Imagama S. | 32 |
| 66 | Ochi M. | Chikuda H. | 31 |
| Top 10 authors by 2nd Order Connections | Top 10 authors by connected institutes | ||
| Name of author | Second order connections | Name of author | Connected institutes |
| Seichi A. | 163 | Seichi A. | 38 |
| Kato T. | 148 | Fehlings M. | 33 |
| Yamazaki M. | 148 | Riew K. | 33 |
| Kimura A. | 148 | Toyama Y. | 33 |
| Taguchi T. | 143 | Taguchi T. | 31 |
| Toyama Y. | 142 | Takeshita K. | 30 |
| Takeshita K. | 141 | Yamazaki M. | 28 |
| Chikuda H. | 129 | Chikuda H. | 27 |
| Kaito T. | 129 | Kato T. | 27 |
| Fujimori T. | 129 | Yonenobu K. | 26 |
| Top 10 authors by betweenness | |||
| Name of author | Betweenness | ||
| Riew K. | 228.2296532 | ||
| Heller J. | 93.6082689 | ||
| Oshima Y. | 80.3588865 | ||
| Takeshita K. | 71.41397157 | ||
| Yonenobu K. | 62.18250124 | ||
| Seichi A. | 60.53062928 | ||
| Taguchi T. | 49.08174472 | ||
| Chikuda H. | 48.14430465 | ||
| Imagama S. | 48.09630067 | ||
| Miyauchi A. | 45.9 | ||
H-Index is explained in text. First order connections are the total number of an author’s co-authors. Second order connections are the total number of the co-authors’ co-authors. Connected institutes is the number of distinct research institutes in which the author had co-authors. Betweenness is a measure of how ‘central’ an author is to information flow within the network [22].