Generalization Lattices

Generalization lattices encode domain knowledge relevant to generalization. They provide a convenient framework for data visualiza-tion during user-guided exploration and for automated guidance during independent exploration. To reduce the size of a generalization lattice for an individual attribute, we deene six types of pruning. Then we consider the generalization space deened by the cross product of lattices for several attributes. To increase the relevance of the data exploration results, we deene ve additional types of pruning. An interactive, web-based system for visualizing the generalization space allows the user to interactively guide the data exploration process.