Richard Wetherill: Anasazi

Understanding Artificial Anasazi

A replication and analysis of the Artificial Anasazi model is presented. It is shown that the success of replicating historical data is based on two parameters that adjust the carrying capacity of the Long House Valley. Compared to population estimates equal to the carrying capacity the specific agent behavior contributes only a modest improvement of the model to fit the archaeological records....

Remembering Richard [Obituary, Richard A.Newton]

Evolutionary Robustness Checking in the Artificial Anasazi Model

Using the well-known Artificial Anasazi simulation for a case study, we investigate the use of genetic algorithms (GAs) for performing two common tasks related to robustness checking of agent-based models: parameter calibration and sensitivity analysis. In the calibration task, we demonstrate that a GA approach is able to find parameters that are equally good or better at minimizing error versu...

Richard Jorgensen

the well-known tendency of particular maladies to show breed-specificity can be used to infer likely sharing of descent of the causative alleles. As made clear in the volume under review, this is as true of major-gene diseases such as copper toxicosis and various retinopathies, as it is of the more complex and more prevalent cardiomyopathies, cancers, and dermatitis. Conduction of clinical tria...

2 Richard

1. Lie groups and Lie algebras 2 1.1. Definition and examples of Lie groups 2 1.2. Left invariant vector fields and Lie algebras 3 1.3. The exponential map 6 2. Representations of Lie groups and Lie algebras 9 2.1. Definitions and examples 9 2.2. The adjoint representation 9 2.3. Semisimplicity and Schur’s lemma 9 2.4. Haar measure and Weyl’s trick 9 2.5. Characters 9 2.6. Examples 9 2.7. Peter...