An Evaluation of Interrater Reliability Measures on Binary Tasks Using .

Many indices of interrater agreement on binary tasks have been proposed to assess reliability, but none has escaped criticism. In a series of Monte Carlo simulations, five such indices were evaluated using , an unbiased indicator of raters' ability to distinguish between the true presence or absence of the characteristic being judged. and, to a lesser extent, coefficients performed best across variations in characteristic prevalence, and raters' expertise and bias.

R-Models: a mathematical framework for capturing notions of abstraction and assistance in reproductive systems.

R-Models are an approach to capturing notions of assistance and abstraction in reproductive systems, based on labelled transition systems and Gibson's theory of affordances. R-Models incorporate a labelled transition system that describes how a reproductive system changes over the course of reproduction. The actors in the system are represented by a set of entities together with a relation describing the states in which those entities are present, and an affordance-modelling function mapping actions to sets of entities which enable those actions to be performed.

Rewriting systems and the modelling of biological systems.

This paper gives a brief survey of the use of algebraic rewriting systems for modelling and simulating various biological processes, particularly at the cellular level.