Computational Evolutionary Biology & Bioinformatics

E-mail: msr@asu.edu
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## career years *h-*index by diffusion speed

### Example

### History

## References

The career years *h-*index by diffusion speed (Mahbuba and Rousseau 2013) is similar to the other career years *h-*indices, but rescales the citation counts per year for the time ellapsed since the year of publication. One could also calculate it for a fixed time window, but here we are using career length at the time of calcuation. One creates a list of years ranked by diffusion speed estimated for all citations for all publications from that year. This list is then processed in the same manner as a typical *h-*type index, namely the career years *h-*index by diffusion speed is the largest value *h* for which at least *h* years have a diffusion speed of *h*.

Because the diffusion speed will often not be an integer, the authors recommend interpolating between this and the next largest value, as with the real *h-*index, in order to more accurately estimate the metric.

Years are ordered by diffusion speed per year, from highest to lowest.

Year (y)_{i} | 2000 | 1997 | 2001 | 1998 | 1999 |
---|---|---|---|---|---|

Age (A)_{i} | 2 | 5 | 1 | 4 | 3 |

Citations (C)_{i} | 40 | 77 | 3 | 11 | 2 |

Diffusion Speed (C/_{i}A)_{i} | 20.00 | 15.40 | 3.00 | 2.75 | 0.67 |

Rank (i) | 1 | 2 | 3 | 4 | 5 |

h = 3 |

The largest rank where *i* ≤ *C _{i}*/

Year | Career years h by diffusion speed_{int} |
---|---|

1997 | 1.0000 |

1998 | 2.0000 |

1999 | 2.0000 |

2000 | 2.9000 |

2001 | 3.0000 |

2002 | 4.7500 |

2003 | 5.0000 |

2004 | 5.7319 |

2005 | 6.3137 |

2006 | 6.7479 |

2007 | 7.0000 |

2008 | 8.1667 |

2009 | 8.4455 |

2010 | 9.3750 |

2011 | 10.2326 |

2012 | 10.1910 |

2013 | 10.2258 |

2014 | 10.1818 |

2015 | 10.7011 |

2016 | 10.6875 |

2017 | 10.5017 |

- Mahbuba, D., and R. Rousseau (2013) Year-based
*h-*type indicators.*Scientometrics*96(3):785–797.