Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Dreisigmeyer, David"'
Autor:
Dreisigmeyer, David W.
We examine doing probabilistic descent over manifolds implicitly defined by a set of polynomials with rational coefficients. The system of polynomials is assumed to be triangularized. An application of Whitney's embedding theorem allows us to work in
Externí odkaz:
http://arxiv.org/abs/1808.08548
Autor:
Dreisigmeyer, David W
The nonnegative matrix factorization is a widely used, flexible matrix decomposition, finding applications in biology, image and signal processing and information retrieval, among other areas. Here we present a related matrix factorization. A multi-o
Externí odkaz:
http://arxiv.org/abs/1709.04395
Autor:
Dreisigmeyer, David W.
The Whitney embedding theorem gives an upper bound on the smallest embedding dimension of a manifold. If a data set lies on a manifold, a random projection into this reduced dimension will retain the manifold structure. Here we present an algorithm t
Externí odkaz:
http://arxiv.org/abs/1709.01972
Autor:
Dreisigmeyer, David W
Direct search methods are mainly designed for use in problems with no equality constraints. However, there are many instances where the feasible set is of measure zero in the ambient space and no mesh point lies within it. There are methods for worki
Externí odkaz:
http://arxiv.org/abs/1705.07428
Autor:
Dreisigmeyer, David W.
Publikováno v:
Access citation, abstract and download form; downloadable file 1.54 Mb.
Thesis (Ph. D.)--Colorado State University, 2004.
Includes bibliographical references.
Includes bibliographical references.
Externí odkaz:
http://wwwlib.umi.com/dissertations/fullcit/3131668
Autor:
Dreisigmeyer, David W., Stajic, Jelena, Nemenman, Ilya, Hlavacek, William S., Wall, Michael E.
We have developed a mathematical model of regulation of expression of the Escherichia coli lac operon, and have investigated bistability in its steady-state induction behavior in the absence of external glucose. Numerical analysis of equations descri
Externí odkaz:
http://arxiv.org/abs/0802.1223
Publikováno v:
Foundations of Physics Volume 45, Issue 6 , pp 661-672, 2015
This work builds on the Volterra series formalism presented in [D. W. Dreisigmeyer and P. M. Young, J. Phys. A \textbf{36}, 8297, (2003)] to model nonconservative systems. Here we treat Lagrangians and actions as `time dependent' Volterra series. We
Externí odkaz:
http://arxiv.org/abs/physics/0402056
Publikováno v:
Journal of Physics A: Mathematical and General, 37(11), L117-121, 2004
We comment on the method of Dreisigmeyer and Young [D. W. Dreisigmeyer and P. M. Young, J. Phys. A \textbf{36}, 8297, (2003)] to model nonconservative systems with fractional derivatives. It was previously hoped that using fractional derivatives in a
Externí odkaz:
http://arxiv.org/abs/physics/0312085
Publikováno v:
J.Phys.A36:8297-8310,2003
We reexamine the problem of having nonconservative equations of motion arise from the use of a variational principle. In particular, a formalism is developed that allows the inclusion of fractional derivatives. This is done within the Lagrangian fram
Externí odkaz:
http://arxiv.org/abs/physics/0306142
We examine the dynamic and geometric phases of the electron in quantum mechanics using Hestenes' spacetime algebra formalism. First the standard dynamic phase formula is translated into the spacetime algebra. We then define new formulas for the dynam
Externí odkaz:
http://arxiv.org/abs/quant-ph/0111101