Jovan Stosic
“Q.E.F.,” sometimes written “QEF,” is an abbreviation for the Latin phrase “quod erat faciendum” (“that which was to be done”). It is a translation of the Greek words used by Euclid to indicate the end of the justification of a construction, while “Q.E.D.” was the corresponding end of proof of a theorem (cf. Heath 1956, pp. 124-129).
Jovan Stosic
The main functionalities of a CAS are to perform numerical computations, symbolic computations, data analysis, and data visualization. Due to its widespread domain, various computer algebra systems for Linux exist, dealing with different types of applications. Our editors have outlined 20 best computer algebra systems that can be used by mathematicians, data science professionals, or higher-studies purposes.
Source: Top 20 Best Computer Algebra Systems for Linux in 2019
Jovan Stosic
In machine learning and pattern recognition, a feature is an individual measurable property or characteristic of a phenomenon being observed.[1] Choosing informative, discriminating and independent features is a crucial step for effective algorithms in pattern recognition,classification and regression. Features are usually numeric, but structural features such as strings and graphs are used in syntactic pattern recognition. The concept of “feature” is related to that of explanatory variable used in statistical techniques such as linear regression.