Network-based Citation Metrics: Eigenfactor vs. SJR

Is the influence of a journal best measured by the number of citations it attracts or by the citations it attracts from other influential journals?
The purpose of this post is to describe, in plain English, two network-based citation metrics: Eigenfactor[1] and SCImago Journal Rank (SJR)[2], compare their differences, and evaluate what they add to our understanding of the scientific literature.
Both Eigenfactor and SJR are based on the number of citations a journal receives from other journals, weighted by their importance, such that citations from important journals like Nature are given more weight than less important titles. Later in this post, I’ll describe exactly how a journal derives its importance from the network.
Authors:  PHIL DAVIS
Source: The Scholarly Kitchen
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