Table 4 Meta-paths describing some notions of proximity between authors. The Features gather some meta-paths that are similar if the direction of the arrows is neglected or alternatively, if one only considers the node types composing the meta-paths \(^{[3]}\)Distinct of the targeted authors

\(\textit{A}\rightarrow \textit{P}\leftarrow \textit{A}\)

Are co-authors

A\(\rightarrow \)P\(\leftarrow \)A\(\rightarrow \)P\(\leftarrow \)A

Share co-authors\(^{[3]}\)

\(v_A\)

A\(\rightarrow \)P\(\rightarrow \)P\(\leftarrow \)A

Cite the other’s paper

\(v_{PP}\)

A\(\rightarrow \)P\(\leftarrow \)P\(\leftarrow \)A

Are cited by the other’s paper

A\(\rightarrow \)P\(\rightarrow \)P\(\leftarrow \)P\(\leftarrow \)A

Co-cite the same paper

A\(\rightarrow \)P\(\leftarrow \)P\(\rightarrow \)P\(\leftarrow \)A

Are Co-cited by the same paper

\(v_{PPP}\)

A\(\rightarrow \)P\(\rightarrow \)V\(\leftarrow \)P\(\leftarrow \)A

Have paper in the same conference

\(v_V\)

A\(\rightarrow \)P\(\rightarrow \)T\(\leftarrow \)P\(\rightarrow \)A

Have paper about the same topic

\(v_T\)