A dívida de Hume com Pascal

The Pascal-de Moivre Triangles*

The coefficients of the Pascal triangle were generalized in 1756 by de Moivre [5]. Each row of a Pascal triangle contains a sequence of numbers that are the coefficients of the power series expansion for the binary expression (l + x)^. The de Moivre formula [2], [4], [5], [6] derives the coefficients of the power series for the generalized expansion of (1 + x + x + • • • + x^"^). Thus, for inte...

Triangle de Pascal , complexité et automates ∗

À quoi reconnâıt-on qu’une suite est plus ou moins “compliquée” ? Une des traductions mathématiques de ce terme vague consiste à compter les facteurs ou blocs qui apparaissent dans cette suite, (voir par exemple [2]). Il y a naturellement bien d’autres approches possibles, qui dépendent en particulier à la fois des applications qu’on a à l’esprit ... et des quantités que l’on sait calculer ou e...

Antecedentes da Intenção de Gestores de Negócios de Formar Parcerias com a Área de TI

Aprimorando Processos de Imputação Multivariada de Dados com Workflows

� Knowledge discovery in databases usually face the problem of missing values. Thus there are several preprocessing mechanisms that aim to make data imputation. However, these mechanisms normally deal with univariate cases, i.e. cases that present missing values in only one column. Iterative imputation mechanisms are capable of dealing with cases that present missing values in several columns, ...

Especificação de Requisitos de Software com o Método SCR

This article presents and discusses a formal method for software requirements specification, the SCR Software Cost Reduction method, detailing its utilization process by means of a case study. The strengthness and difficulties of the method, and other concluding remarks, are pointed out.