ggalluvial: Layered Grammar for Alluvial Plots

Embodied Construction Grammar As Layered Modal Languages

Contents A Simple Graph Grammar Enabling the Representation of Layered

concurrent semantics are also defined. Three classical observations for concurrent semantics — interleaving, partial ordering and mixed ordering — are defined on the graph derivations. Bisimulation is exploited to obtain three equivalences of π-calculus agents corresponding to the observations. As expected, the ordinary observational equivalence for the π-calculus is re-obtained in this context...

A physical design grammar: A production system for layered manufacturing machines

This paper addresses the need to generate functionally large geometries/objects for layered manufacturing machines. Novelty is found in the translation from an initial shape in CAD to subdivision as interlocking objects that are further subdivided into slicing layers using traditional layered manufacturing software. Translation from an initial shape to individual component geometry is guided by...

Bivariate Qq-plots and Spider Web Plots

Abstract: QQ-plots are extremely useful in univariate data analysis. In this article, Koltchinskii (1997) and Chaudhuri’s (1996) definition of multivariate quantile is used to develop analogous plots for bivariate data. Bivariate qq-plots are exhibited for comparing a sample to a given population distribution (the bivariate normal), and for comparing two or more bivariate samples. The plots are...

Poincaré Plots for Residual Analysis

After some suitable ordering of the residuals, et, t = 1, . . . , n, it is suggested that scatter plots of et+1 vs. et along with a robust smooth loess trend be routinely examined to check for lack of statistical independence. Such plots may be termed Poincaré plots because of their similarity to plots used in nonlinear dynamical systems. Poincaré plots are helpful in detecting positive correla...