← Back to introduction

hpd-index

The hpd-index (Kosmulski 2009) is very similar to the h-index, except that it adjusts for the age of a publication. Rather than adjust per year, the metric is adjusted per decade. Thus if

$$cpd_i=\frac{10C_i}{Y-Y_i+1}$$

is the number of citations an article has per decade (where Y is the current year), then the hpd-index for an author is the largest rank for which hpd of their publications (ranked by cpdi rather than Ci) have cpdhpd.

$$hpd=\underset{i}{\max}\left(i \leq cpd_i\right)$$

Example

Publications are ordered by adjusted number of citations, from highest to lowest.

Citations (Ci)194726151110421131100000
Age (Y − Yi + 1)255455321152254211
Adjusted Citations (cpdi)95.0094.0052.0037.5022.0020.0013.3310.0010.0010.006.005.005.000.000.000.000.000.00
Rank (i)123456789101112131415161718
hpd = 10

The largest rank where icpdi is 10.

History

Yearhpd
19972
19985
19996
20007
200110
200212
200315
200417
200520
200622
200723
200825
200926
201030
201131
201232
201333
201432
201534
201633
201733
201835
201935
202034
202136
202236
202336
202435

References