Facet analytical theory (FAT). From SIGCR-L: A new research project at University College London (U.K.) – 'Facet Analytical Theory for Knowledge Structure in Humanities' Facet analytical theory (FAT) is a novel method of indexing which deals with individual simple terms. It builds up a map of subjects “bottom-up” by clustering terms in a systematic way, rather than as a linear sequence. This research project will investigate the potential role of FAT in the development of the knowledge structure of multi-dimensional networks of subject terms for use with digital collections. [ia/ – news for information architects]