h-index is sometimes listed as a measure of research/citation (quality). How meaningful is it? and what is the expected h-index of a newly-hired assistant professor?
The h-index was developed to quantify the actual scientific productivity and the scientific impact of a scientist at the same time. This seems to be a good idea, but there are several shortcomings:
Depending on the data base used for calculating the index, i.e., Scopus, Google Scholar, Web-of-Science, etc., the h-index varies because the sources they index also vary.
Additionally, the h-index is insensitive to the impact of an author with a small number of highly cited papers. This is of course a problem for all newly-hired assistant professors, as these persons were not able to publish many articles yet, and even if they had already published a highly cited article, this would not be visible in the h-index.
I don’t think that there exist an expected h-index for a newly-hired assistant professor. The most important papers as stated by the applicant for an assistant professorship are often of greater significance than any (questionnable) index.
I suppose Einstein may have had an h-index of less than 10 for the 4 or 5 papers he published in 1905, even though these papers have been cited thousand times each!
The h-index is an author-level metric that attempts to measure both the productivity and citation impact of the publications of a scientist or scholar.