In a previous article, we introduced a number of visualization techniques that we had developed for monitoring the dynamics of artificial competitive coevolutionary systems. One of these techniques involves evaluating the performance of an individual from the current population in a series of trials against opponents from all previous generations, and visualizing the results as a 2D grid of sha...

You don't hear a lot of Henry Luce stories around here now. I heard my first one during a job interview 9 1/2 years ago. Dick Stolley, one of Time Inc.'s editorial viceroys, had suggested that FORTUNE might suit me; I'd offered as how I liked reading about business but didn't know a whole lot about it. No matter, said Stolley: “Luce used to say it's easier to teach a poet how to read a balance ...

Recurrence plots exhibit line structures which represent typical behaviour of the investigated system. The local slope of these line structures is connected with a specific transformation of the time scales of different segments of the phase-space trajectory. This provides us a better understanding of the structures occurring in recurrence plots. The relationship between the timescales and line...

The Shannon entropy of a time series is a standard measure to assess the complexity of a dynamical process and can be used to quantify transitions between different dynamical regimes. An alternative way of quantifying complexity is based on state recurrences, such as those available in recurrence quantification analysis. Although varying definitions for recurrence-based entropies have been sugg...

Most data that are collected are multivariate in nature, and much of them can be regarded as continuous. In the initial stages of analysis, graphic displays can be used to explore the data, but for multivariate data, traditional histograms or twoor three-dimensional scatter plots may miss complex relationships that exist in the data set. A number of methods for graphically displaying multivaria...