Table 1 Variables description
Variable | Description |
|---|---|
Productivity | Total number of papers published at year t. |
\(\beta _{0}\) | The number of disconnected components in the local collaboration network. |
\(\beta _{1}\) (binary) | The number of higher-order loops in the local collaboration network. \(\beta _{1} = 1\) if there exists at least one loop, otherwise 0. |
Network size | The number of collaborators at year t. |
Network density | The fraction of real links with respect to all possible links in conventional collaboration networks. |
Average tie strength | The average tie strength between the focal scientist and his/her collaborators between year t-5 and year t-1. |
Collaborative strength | The ratio of collaborative papers among collaborators to the total number of papers published by all collaborators between year t-5 and year t-1. |
Career age | Career age of the focal scientist. |
\(\text{Productivity}_{\overleftarrow{t}}\) | Total number of papers published at the last year in which the scientist has publication records. |