title: About the σA estimate.
abstract: The resolution parameter σ(A) is currently used for evaluating the degree of similarity between a model and the target structure. Here, quasi-Wilson distributions are used to represent the local statistics of the normalized amplitudes both for the target and for the model structure. The study uses the joint probability distribution approach to provide (i) a description of the statistical properties of the σ(A) parameter; (ii) a deeper insight into the role, for the σ(A) estimate, of the high-order moments of the target and of the model structure-factor distributions; and (iii) new statistical formulas for estimating σ(A). The theoretical results have been checked using test proteins.
authors.affiliation: Department of Earth Sciences, University of Perugia, Perugia, Italy.
authors.forename: Maria Cristina
authors.initials: MC
authors.lastname: Burla
authors.forename: Carmelo
authors.initials: C
authors.lastname: Giacovazzo
authors.forename: Annamaria
authors.initials: A
authors.lastname: Mazzone
authors.forename: Giampiero
authors.initials: G
authors.lastname: Polidori
authors.forename: Dritan
authors.initials: D
authors.lastname: Siliqi
mesh_terms: D003198:Computer Simulation; D015233:Models, Statistical; D011336:Probability; D011789:Quantum Theory