Document (#40042)

Author

Ibáñez, A.
Armañanzas, R.
Bielza, C.
Larrañaga, P.

Title

Genetic algorithms and Gaussian Bayesian networks to uncover the predictive core set of bibliometric indices

Source

Journal of the Association for Information Science and Technology. 67(2016) no.7, S.1703-1721

Year

2016

Abstract

The diversity of bibliometric indices today poses the challenge of exploiting the relationships among them. Our research uncovers the best core set of relevant indices for predicting other bibliometric indices. An added difficulty is to select the role of each variable, that is, which bibliometric indices are predictive variables and which are response variables. This results in a novel multioutput regression problem where the role of each variable (predictor or response) is unknown beforehand. We use Gaussian Bayesian networks to solve the this problem and discover multivariate relationships among bibliometric indices. These networks are learnt by a genetic algorithm that looks for the optimal models that best predict bibliometric data. Results show that the optimal induced Gaussian Bayesian networks corroborate previous relationships between several indices, but also suggest new, previously unreported interactions. An extended analysis of the best model illustrates that a set of 12 bibliometric indices can be accurately predicted using only a smaller predictive core subset composed of citations, g-index, q2-index, and hr-index. This research is performed using bibliometric data on Spanish full professors associated with the computer science area.

Content

Vgl.: http://onlinelibrary.wiley.com/doi/10.1002/asi.23467/abstract.

Theme

Informetrie

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