Deposit classification scheme for the Critical Minerals Mapping Initiative Global Geochemical Database

The smectitic minerals in a bentonite deposit from Melo (Uruguay)

A nearly monomineralic 1.5 m thick bentonite bed sampled in Melo (Uruguay) appears to be a pure high-charge montmorillonite: [Si3.94 Al0.06] (Al1.40 Fe0.11 Ti0.02 Mg0.49 Mn0.01) O10 (OH)2 Na0.01 K0.08 Ca0.18. However, contrasting swelling behaviors have been evidenced by fitting the experimental X-ray diffraction patterns recorded on oriented preparations of the same sample in different saturat...

Fuzzy Classification Scheme Mapping for Decision Making Research - in - Progress

Classification schemes organize objects into hierarchy structure of knowledge by grouping them with common characteristics. Managers prefer resorting to existing classifications schemes for decision making for their advantages over perplexity and huge amount of detail bottom information. However, single classification scheme is not enough for certain purposes. More and more applications call fo...

Evidence for geochemical terranes on Mercury: Global mapping of major elements with MESSENGER's X-Ray Spectrometer

a Department of Terrestrial Magnetism, Carnegie Institution of Washington, Washington, DC 20015, USA b Physics Department, The Catholic University of America, Washington, DC 20064, USA c Department of Earth and Planetary Sciences, American Museum of Natural History, New York, NY 10024, USA d Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY 10964, USA e The Johns Hopkins Univ...

Developed for the Global Initiative for Asthma

An improved global feature selection scheme for text classification

Feature selection is known as a good solution to the high dimensionality of the feature space and mostly preferred feature selection methods for text classification are filter-based ones. In a common filter-based feature selection scheme, unique scores are assigned to features depending on their discriminative power and these features are sorted in descending order according to the scores. Then...