A statistical analysis of the TREC-3 data shows that performance differences across queries is greater than performance differences across participant runs. Generally, groups of runs which do not differ significantly at large, sometimes accounting for over half the runs. Correlation among the various performance measures is high.

GENESIS is a UK project funded by its Economic and Social Research Council through the National Centre for e-Social Science research node program. Some GENESIS work aims to develop simulation models that represent individual humans and their organisations and how they change their location and influence over time. For this I am developing two models that operate at different temporal resolution...