Sacrifice and Community: Jewish Offering and Christian Eucharist – Matthew Levering

Book reviewed:
Sacrifice and Community: Jewish Offering and Christian Eucharist , Matthew Levering, Blackwells Publishing 2005 (1-4051-3690-1), ix + 210 pp., pb $29.95     

The Jewish Social Contract: An Essay in Political Theology – David Novak

Book reviewed:
The Jewish Social Contract: An Essay in Political Theology , David Novak, Princeton University Press 2005 (0-691-12210-5), xxi + 257 pp., hb $39.50     

Efficient spatio-temporal data mining with GenSpace graphs

We describe a method for spatio-temporal data mining based on GenSpace graphs. Using familiar calendar and geographical concepts, such as workdays, weeks, climatic regions, and countries, spatio-temporal data can be aggregated into summaries in many ways. We automatically search for a summary with a distribution that is anomalous, i.e., far from user expectations. We repeatedly ranking possible summaries according to current expectations, and then allow the user to adjust these expectations. We also choose a propagation path in the GenSpace subgraph that reduces the storage and time costs of the mining process.     

Understanding the complexities of group perception: broadening the domain

Recent developments in the study of group perception have been guided by four concepts: homogeneity, essentialism, agency, and entitativity. Research on these topics has broadened the scope of questions asked, issues studied, and explanatory mechanisms that are important in the perception of groups. This article summarizes each concept, discusses its contribution to understanding group perception, and highlights unresolved questions that need investigation. Possible conceptual interpretations of the relations among these concepts and their relationship to stereotyping are then discussed. Copyright © 2007 John Wiley & Sons, Ltd.