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Materias / palabras clave: mathematics, algebra, combinatorics; Science: Mathematics

Materias / palabras clave: combinatorics, graph theory, discrete mathematics; Science: Mathematics

Materias / palabras clave: mathematics, geometry, algebra, algorithms, combinatorics; Science: Mathematics

Materias / palabras clave: combinatorics, optimization; Science: Mathematics

Materias / palabras clave: combinatorics, ordered algebraic structures, enumerative combinatorics; Science: Mathematics

Materias / palabras clave: combinatorics, graph theory, discrete mathematics; Science: Mathematics

Materias / palabras clave: mathematics, combinatorics; Science: Mathematics

Materias / palabras clave: discrete mathematics, combinatorics, graph theory, computer science; Science: Mathematics

Materias / palabras clave: mathematics, ombinatorics; Science: Mathematics

Materias / palabras clave: graphs and hypergraphs, network theory, combinatorial optimization, coding theory, block designs; Science: Mathematics

A method is described for the minimization of a function of n variables, which depends on the comparison of function values at the (n + 1) vertices of a general simplex, followed by the replacement of the vertex with the...

Let $M(x)$ denote the expected value at level $x$ of the response to a certain experiment. $M(x)$ is assumed to be a monotone function of $x$ but is unknown to the experimenter, and it is desired to find the solution $x ...

We propose a simple analytic representation of the correlation energy ${\mathrm{\ensuremath{\varepsilon}}}_{\mathit{c}}$ for a uniform electron gas, as a function of density parameter ${\mathit{r}}_{\mathit{s}}$ and rela...

We discuss the following problem: given a random sample $\mathbf{X} = (X_1, X_2, \cdots, X_n)$ from an unknown probability distribution $F$, estimate the sampling distribution of some prespecified random variable $R(\mat...

Materias / palabras clave: Toolbox; Computer science; Centrality; Functional connectivity; Complex network; Network analysis; Resilience (materials science); Artificial intelligence; Neuroscience; Machine learning; Psychology; Combinatorics

Suppose x is an unknown vector in Ropf m (a digital image or signal); we plan to measure n general linear functionals of x and then reconstruct. If x is known to be compressible by transform coding with a known transform...

Donoho and Johnstone (1994) proposed a method for reconstructing an unknown function f on [0,1] from noisy data d/sub i/=f(t/sub i/)+/spl sigma/z/sub i/, i=0, ..., n-1,t/sub i/=i/n, where the z/sub i/ are independent and...

Abstract Let n observations Y 1, Y 2, ···, Y n be generated by the model Y t = pY t−1 + e t , where Y 0 is a fixed constant and {e t } t-1 n is a sequence of independent normal random variables with mean 0 and varia...

Systems as diverse as genetic networks or the World Wide Web are best described as networks with complex topology. A common property of many large networks is that the vertex connectivities follow a scale-free power-law ...

Abstract The least squares estimator of a regression coefficient β is vulnerable to gross errors and the associated confidence interval is, in addition, sensitive to non-normality of the parent distribution. In this pap...

It has long been realized that in pulse-code modulation (PCM), with a given ensemble of signals to handle, the quantum values should be spaced more closely in the voltage regions where the signal amplitude is more likely...

A low-density parity-check code is a code specified by a parity-check matrix with the following properties: each column contains a small fixed number j \geq 3 of l's and each row contains a small fixed number k > j of...

We describe MUSCLE, a new computer program for creating multiple alignments of protein sequences. Elements of the algorithm include fast distance estimation using kmer counting, progressive alignment using a new profile ...

Abstract Summary: MrBayes 3 performs Bayesian phylogenetic analysis combining information from different data partitions or subsets evolving under different stochastic evolutionary models. This allows the user to analyze...