A size-dependent intra-department correlation model plus a new Betoidal distribution produce an adjusted ISPD that reduces polarization bias and outperforms the original index in simulations on 2017 and 2022 data.
Letting ρ= 1 N(N−1) X i∈N X i′∈N \i ρii′ be the average pairwise intra-departmental correlation, we haveV( ˜Z) = 1 + (N−1)ρ
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Modeling within-department homogeneity in research quality rankings: an application to the Italian ISPD
A size-dependent intra-department correlation model plus a new Betoidal distribution produce an adjusted ISPD that reduces polarization bias and outperforms the original index in simulations on 2017 and 2022 data.