Results 51 to 60 of about 1,047,288 (209)

Data Mining and Analysis of the Compatibility Law of Traditional Chinese Medicines Based on FP-Growth Algorithm

Journal of Mathematics, 2021
The compatibility law of prescriptions is the core link of TCM theory of “theory, method, prescription and medicine,” which is of great significance for guiding clinical practice, new drug development and revealing the scientific connotation of TCM ...
Shuchun Zhou
doaj   +1 more source

Cadabra: reference guide and tutorial [PDF]

, 2006
Cadabra is a computer algebra system for the manipulation of tensorial mathematical expressions such as they occur in “field theory problems”. It is aimed at, but not necessarily restricted to, high-energy physicists.
Peeters, K.
core   +1 more source

The radial spanning tree of a Poisson point process

, 2007
We analyze a class of spatial random spanning trees built on a realization of a homogeneous Poisson point process of the plane. This tree has a simple radial structure with the origin as its root.
Baccelli, Francois, Bordenave, Charles
core   +1 more source

Building trees by juggling information and following rules: an expert interview study on tree-building and phylogenetic inference

Evolution: Education and Outreach
Tree-thinking is a fundamental skill set for understanding evolutionary theory and, thus, part of biological and scientific literacy. Research on this topic is mostly directed towards tree-reading—the umbrella-term for all skills enabling a person to ...
Steven Tyrrell, Philipp Schmiemann
doaj   +1 more source

Reinforcement Learning via AIXI Approximation

, 2010
This paper introduces a principled approach for the design of a scalable general reinforcement learning agent. This approach is based on a direct approximation of AIXI, a Bayesian optimality notion for general reinforcement learning agents.
Hutter, Marcus, Ng, Kee Siong, Silver, David, Veness, Joel   +3 more
core   +2 more sources

Equitable Labelings of Caterpillar Graphs [PDF]

, 2012
The Graceful Tree Conjecture in graph theory has been open for almost half a century. The conjecture states that the vertices of any tree can be labeled with distinct integers between 0 and the number of edges of the tree in a way that the edges can be ...
Burek, Mark, Olson, William, Taulbee, Brock   +2 more
core   +2 more sources

Tree level spontaneous R-symmetry breaking in O'Raifeartaigh models

, 2011
We show that in O'Raifeartaigh models of spontaneous supersymmetry breaking, R-symmetries can be broken by non-zero values of fields at tree level, rather than by vacuum expectation values of pseudomoduli at loop level.
D. Shih, K.A. Intriligator, L. Ferretti, L.M. Carpenter, Z. Sun, Zheng Sun   +5 more
core   +1 more source

World Sheet and Space Time Physics in Two Dimensional (Super) String Theory

, 1991
We show that tree level ``resonant'' $N$ tachyon scattering amplitudes, which define a sensible ``bulk'' S -- matrix in critical (super) string theory in any dimension, have a simple structure in two dimensional space time, due to partial decoupling of a
Ambjørn, Banks, Banks, Banks, Belavin, Bershadsky, Bershadsky, Bessis, Bouwknegt, Braaten, Braaten, Brézin, Brézin, Brézin, Brézin, Callan, Curtright, D. Kutasov, Das, Das, David, David, Demeterfi, Di Francesco, Di Francesco, Di Francesco, Di Francesco, Dine, Distler, Distler, Distler, Dotsenko, Dotsenko, Dotsenko, Douglas, Douglas, Feigin, Friedan, Friedan, Gervais, Gervais, Gervais, Ginsparg, Goulian, Green, Green, Gross, Gross, Gross, Gross, Gupta, Kazakov, Kazakov, Knizhnik, Kutasov, Kutasov, Kutasov, Lian, Lian, Mandal, Minic, Moore, Moore, Moore, Mukherji, Ooguri, Ooguri, P. Di Francesco, Parisi, Polchinski, Polchinski, Polchinski, Polchinski, Polyakov, Polyakov, Polyakov, Seiberg, Sengupta, Shenker, Witten, Witten, Witten   +81 more
core   +1 more source

An Integrated Fuzzy Fault Tree Model with Bayesian Network-Based Maintenance Optimization of Complex Equipment in Automotive Manufacturing

Energies, 2021
Process integrity, insufficient data, and system complexity in the automotive manufacturing sector are the major uncertainty factors used to predict failure probability (FP), and which are very influential in achieving a reliable maintenance program.
Hamzeh Soltanali, Mehdi Khojastehpour, José Torres Farinha, José Edmundo de Almeida e Pais   +3 more
doaj   +1 more source

Effective Field Theory for Dark Matter Direct Detection up to Dimension Seven

, 2017
We present the full basis of effective operators relevant for dark matter direct detection, up to and including operators of mass dimension seven. We treat the cases where dark matter is either a Dirac fermion, a Majorana fermion, a complex scalar, or a ...
Brod, Joachim, Gootjes-Dreesbach, Aaron, Tammaro, Michele, Zupan, Jure   +3 more
core   +1 more source