Results 31 to 40 of about 15,352,997 (261)

Low dimensional simplex evolution: a new heuristic for global optimization

open access: yes, 2012
This paper presents a new heuristic for global optimization named low dimensional simplex evolution (LDSE). It is a hybrid evolutionary algorithm. It generates new individuals following the Nelder-Mead algorithm and the individuals survive by the rule of
Luo ZT(罗长童), Luo, CT, Yu B(于波)
core   +1 more source

Improved polytope volume calculations based on Hamiltonian Monte Carlo with boundary reflections and sweet arithmetics

open access: yesJournal of Computational Geometry, 2022
Computing the volume of a high dimensional polytope is a fundamental problem in geometry, also connected to the calculation of densities of states in statistical physics, and a central building block of such algorithms is the method used to sample a ...
Frederic Cazals   +2 more
doaj   +1 more source

Neural simplex architecture

open access: yes, 2020
We present the Neural Simplex Architecture (NSA), a new approach to runtime assurance that provides safety guarantees for neural controllers (obtained e.g. using reinforcement learning) of autonomous and other complex systems without unduly sacri cing
Jansen, Nils   +5 more
core   +4 more sources

A Reverse Analytic Inequality for the Elementary Symmetric Function with Applications

open access: yesJournal of Applied Mathematics, 2013
We give a reverse inequality involving the elementary symmetric function by use of the Schur harmonic convexity theory. As applications, several new analytic inequalities for the n-dimensional simplex are established.
Huan-Nan Shi, Jing Zhang
doaj   +1 more source

Calibrated simplex-mapping classification.

open access: yesPLoS ONE, 2023
We propose a novel methodology for general multi-class classification in arbitrary feature spaces, which results in a potentially well-calibrated classifier. Calibrated classifiers are important in many applications because, in addition to the prediction
Raoul Heese   +3 more
doaj   +1 more source

A Note on the Angles in an n-Dimensional Simplex [PDF]

open access: yesProceedings of the Glasgow Mathematical Association, 1959
Three different sets of equations connecting the sums of angles in an n-dimensional simplex have been given by Sommerville [7], Höhn [5], and Peschl [6]. The equivalence of the first two sets of equations has been proved by Sprott [7].In the present note it is shown that results are simplified if we consider averages instead of sums, and that the ...
openaire   +2 more sources

Herpes simplex virus triggers and then disarms a host antiviral response [PDF]

open access: yes, 2001
Virus infection induces an antiviral response that is predominantly associated with the synthesis and secretion of soluble interferon. Here, we report that herpes simplex virus type 1 virions induce an interferon-independent antiviral state in human ...
Smiley, J R   +5 more
core   +1 more source

Orthant spanning simplexes with minimal volume

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2003
A geometry problem is to find an (n−1)-dimensional simplex in ℝn of minimal volume with vertices on the positive coordinate axes, and constrained to pass through a given point A in the first orthant. In this paper, it is shown that the optimal simplex is
Michele Elia
doaj   +1 more source

Upper and Lower Bounds on the Smoothed Complexity of the Simplex Method [PDF]

open access: yesTheoretiCS
The simplex method for linear programming is known to be highly efficient in practice, and understanding its performance from a theoretical perspective is an active research topic. The framework of smoothed analysis, first introduced by Spielman and Teng
Sophie Huiberts   +2 more
doaj   +1 more source

Advanced Materials for Biologics Delivery to Brain Tumors

open access: yesAdvanced Materials, EarlyView.
Material innovation is central to unlocking the therapeutic potential of biologics against many central nervous system diseases, including brain cancer. By engineering carriers with controlled transport, targeting, and release properties, advanced materials can overcome the blood–brain barrier and tumor microenvironment, improving the delivery of ...
Yuran Feng   +4 more
wiley   +1 more source

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