A forward diversity index
A forward diversity index
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DOI:
10.1007/s11192-011-0528-1
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发表时间:
2012-02-01
期刊:
影响因子:
3.9
通讯作者:
Porter, Alan L.
中科院分区:
文献类型:
--
作者:
Carley, Stephen;Porter, Alan L.
We introduce an indicator to measure the diffusion of scientific research. Consistent with Stirling's 3-factor diversity model, the diffusion score captures not only variety and balance, but also disparity among citing article cohorts. We apply it to benchmark article samples from six 1995 Web of Science subject categories (SCs) to trace trends in knowledge diffusion over time since publication. Findings indicate that, for most SCs, diffusion scores steadily increase with time. Mathematics is an outlier. We employ a typology of citation trends among benchmark SCs and correlate this with diffusion scores. We also find that self-cites do not, in most cases, significantly influence diffusion scores.