$h_{t}$ -index and $A_{t}$ -index for Evaluating Scientific Performance of Researchers

Abstract

With fast increasing number of scientific publications, evaluation of the scientific performance of researchers has recently become an important issue. Nowadays, while the h-index and other Hirsh type indices take into consideration citation count of publications in the h-core, however, publication and citation count in the h-tail is omitted. This paper analyzes Hirsh type indices and proposes two new indices, the $h_{t}$ -index and the $A_{t}$ -index. The $h_{t}$ -index is defined as the h-index and the $A_{t}$ -index is defined as the A-index for the papers in the h-tail. These indices give information about the publications' quality in the h-tail. The proposed indices allow comparing researchers with the same h- and A-indices. For evaluation of the proposed indices experiment is conducted for 30 researchers in the fields of Data Mining. Results of the experiment demonstrated that if h-index and A-index of researchers are the same, then it is acceptable to compare them for their $h_{t}$ -index and $A_{t}$ -index.