Data for: A deep search method to survey data portals in the whole web: toward a machine learning classification model

This dataset contains every artifacts produced throughout the study titled "A deep search method to survey data portals in the whole web: toward a machine learning classification model" (https://doi.org/10.1016/j.giq.2020.101510)—such as computer algorithms, running data, and obtained results—openly provided with the paper. Thus, open data researchers and practitioners can reproduce the method, help in increasing its validity, and even improve it. Readers are invited to refer to the paper.