Recently, numerous promising results have shown that updatable learned indexes can perform better than traditional with much lower memory space consumption. But it is unknown how these compare against each other and the ones under realistic workloads changing data distributions concurrency levels. This makes practitioners still wary about new would actually behave in practice. To fill this gap,...

the aim of this paper is to examine and analyze the spatial distribution of population in cities of the southern coastal region of iran by using common models and techniques in the field and to study the trends of evolution in a time period of 40 years (1345-1385). models used in the study can be classified into three main groups. the first group is the primate city indexes (including jefferson...