
doi: 10.1007/bf02026040
With a view toward a system of science indicators which is flexible, appropriate, and unambiguous, a brief discussion is given of the theory of classification. This is then applied to three situations arising in input indicators for science, and it is shown how the presently used formalism for such indicators could be improved and thus eliminate unnecessary disputes in the practical application of such indicators.
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 9 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Average | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Top 10% | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |
