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Mohs hardness kit, containing one specimen of each mineral on the ten-point hardness scale. The Mohs scale (/ m oʊ z / MOHZ) of mineral hardness is a qualitative ordinal scale, from 1 to 10, characterizing scratch resistance of minerals through the ability of harder material to scratch softer material.
Mohs hardness of materials (data page) Vickers hardness test; Brinell scale This page was last edited on 16 November 2024, at 12:16 (UTC). Text is available ...
A high ROC AUC, such as 0.9 for example, might correspond to low values of precision and negative predictive value, such as 0.2 and 0.1 in the [0, 1] range. If one performed a binary classification, obtained an ROC AUC of 0.9 and decided to focus only on this metric, they might overoptimistically believe their binary test was excellent.
where is the score for a positive instance and is the score for a negative instance, and and are probability densities as defined in previous section. It can further be shown that the AUC is closely related to the Mann–Whitney U , [ 7 ] [ 8 ] which tests whether positives are ranked higher than negatives.
The AUC is widely used, especially for comparing the performances of two (or more) binary classifiers: the classifier that achieves the highest AUC is deemed better. However, when comparing two classifiers C a {\displaystyle C_{a}} and C b {\displaystyle C_{b}} , three situations are possible:
Versions 8 and 9 of FICO scores are similar, but FICO score 9 is generally considered the more forgiving of the two for a few reasons: With FICO 9, third-party collections no longer hurt your ...
Carl Friedrich Christian Mohs (/ m oʊ z / MOHZ, German: [ˈfʁiːdʁɪç ˈmoːs]; 29 January 1773 – 29 September 1839) was a German chemist and mineralogist. He was the creator of the Mohs scale of mineral hardness. [1] Mohs also introduced a classification of the crystal forms in crystal systems independently of Christian Samuel Weiss. [2]
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