Efficiency (statistics)In statistics, efficiency is a measure of quality of an estimator, of an experimental design, or of a hypothesis testing procedure. Essentially, a more efficient estimator needs fewer input data or observations than a less efficient one to achieve the Cramér–Rao bound. An efficient estimator is characterized by having the smallest possible variance, indicating that there is a small deviance between the estimated value and the "true" value in the L2 norm sense.
Gröbner basisIn mathematics, and more specifically in computer algebra, computational algebraic geometry, and computational commutative algebra, a Gröbner basis is a particular kind of generating set of an ideal in a polynomial ring K[x1, ..., xn] over a field K. A Gröbner basis allows many important properties of the ideal and the associated algebraic variety to be deduced easily, such as the dimension and the number of zeros when it is finite.
PrisonA prison, also known as a jail, gaol (dated, British and South African; historically used in Canada and Australia), penitentiary (North American English), detention center (or detention centre outside the US), correction center, correctional facility, lock-up, hoosegow or remand center, is a facility in which convicted criminals are confined involuntarily (against their will) and denied a variety of freedoms under the authority of the state as punishment for various crimes.
Prison reformPrison reform is the attempt to improve conditions inside prisons, improve the effectiveness of a penal system, or implement alternatives to incarceration. It also focuses on ensuring the reinstatement of those whose lives are impacted by crimes. In modern times the idea of making living spaces safe and clean has spread from the civilian population to include prisons, on ethical grounds which honor that unsafe and unsanitary prisons violate constitutional (law) prohibitions against cruel and unusual punishment.
