Well logging data are the main support of petrophysical information in petroleum
engineering, and as many natural signals, they have deterministic component and noisy …

This study is aimed at revealing the fractal characteristics of acoustic emission (AE) under
multiple heating and loading damage conditions and disclosing the evolution of fractal …

This article investigates the dynamical complexity and fractal characteristics changes of the
Bitcoin/US dollar (BTC/USD) and Euro/US dollar (EUR/USD) returns in the period before …

Geologists have made several advances in applying multifractal theory in geology; however,
some questions such as a large statistical workload and low efficiency remain unanswered …

Grade estimation is a vital issue in ore reserve evaluation extensively investigated by data
mining methods. There are significant relationships between mineralization and grade and …

The Hölderian regularity is an important mathematical feature of a signal, connected with the
physical nature of the measured parameter. Many algorithms have been proposed in …

In petroleum engineering, well logs are the key to characterize a hydrocarbon reservoir, and
to extract meaningful features related to the lithology and the type of fluids present in the …