Group selection

Group Selection

What is group selection? Group selection is the process by which variable groups, in a population of groups, compete and are differentially represented future generations. Heritable traits that increase the survival and reproductive success of groups will increase in frequency in the population of groups. Like any type of selection (natural, artificial, sexual, or otherwise) we need three compo...

Online Group Feature Selection

Online feature selection with dynamic features has become an active research area in recent years. However, in some real-world applications such as image analysis and email spam filtering, features may arrive by groups. Existing online feature selection methods evaluate features individually, while existing group feature selection methods cannot handle online processing. Motivated by this, we f...

The group selection controversy.

Many thought Darwinian natural selection could not explain altruism. This error led Wynne-Edwards to explain sustainable exploitation in animals by selection against overexploiting groups. Williams riposted that selection among groups rarely overrides within-group selection. Hamilton showed that altruism can evolve through kin selection. How strongly does group selection influence evolution? Fo...

Group Activity Selection Problem

We consider a setting where we have to organize one or several group activities for a group of agents. Each agent will participate in at most one activity; her preference over activities generally depends on the number of participants in the activity. The goal is to assign agents to activities in a desirable way. We give a general model, which is a natural generalization of anonymous hedonic ga...

Group Activity Selection Problems