CRG Index: A More Sensitive Ht-Index for Enabling Dynamic Views of Geographic Features

The ht-index is a recently proposed tool for capturing dynamic views of the evolution process of geographic features, but the ht-index is not sensitive to small changes during this process. To address this problem, an improved ht-index, a cumulative rate of growth (CRG) index, was proposed. Compared to the ht-index, the CRG index is more sensitive to changes during the evolution process of geographic features, and the process is better captured by the CRG index as a result. In addition, the head/tail breaks method (used to derive the ht-index) was adjusted, making the CRG index a universal tool for capturing the dynamic views of both increasingly heterogeneous and increasingly homogeneous geographic features.