ER-Rank is based on the freely and publicly available data on European research projects which have been funded by the European Commission during the past years. This data is taken from the CORDIS database which has been published via the internet by the European Commission at http://cordis.europa.eu/
The total project funding does not express the funding a given institution has received but is the sum of the grants allocated to projects this institution has participated in
The funding each participant receives is not published by CORDIS, the project data sheets only contain the sum of grants for each project. We therefore had to estimate an approximative amount which we calculated by dividing the project grant by the number of participant.
This index is using the count of the total number of projects an institution has participated in
Quality of Networking activity: We use a variant of the PageRank algorithm to calculate the rank of a given institution within the European Research Network. The assumption hereby is that the quality or rank of partner institutions within a project determine the rank of a given partner.
To estimate the 'loyality' of institutions we use the ratio between co-participants a given instititutions has repeatedly cooperated and those this institution has cooperated only once.
This index is calclated using the ratio between the number of projects a given institution has coordinated vs. the number he has 'only' participated in. The total number of projects is also weighted and used in an additional correction factor to calculate this index in order to avoid overestimation of those institutions which have participated in a low number of projects but coordinated one or two of them.
Diversity of research areas: Each project information sheet contaims keywords which indicate the area of research
of a distinct project taken from the CORDIS Subject Index Classification Codes.
We take the coverage as well as frequency of category terms a instition reaches within a given period of time and use a modified Herfindahl Index to calculate the diversity of research interest.