This work introduces visualization techniques that allow for a multivariate approach in understanding the dynamics that underlie genetic programming (GP). Emphasis is given toward understanding the relationship between problem difficulty and the loss of diversity. The visualizations raise questions about diversity and problem solving efficacy, as well as the role of the initial population in determining solution outcomes.

Existing devices for communicating information to computers are bulky, slow to use, or unreliable. Dasher is a new interface incorporating language modelling and driven by continuous two-dimensional gestures, e.g. a mouse, touchscreen, or eye-tracker. Tests have shown that this device can be used to enter text at around 25 words per minute, compared with typical ten-finger keyboard typing of 40--60 words per minute. Although the interface is slower than a conventional keyboard, it is small and simple, and could be used on personal data assistants and by handicapped computer users. KEYWORDS: Adaptive, Text, Entry, Language, Modelling 1 INTRODUCTION A conventional Scholes (qwerty) keyboard is often inconvenient; the interaction device may be too small or too big [8], or may have to be operated with one hand because it is wristmounted or hand-held [17]. There are many competing methods of text entry for handheld devices, but none is clearly superior. This is largely because text entry...