A visual analysis of the relationship between word concepts and geographical locations. - Keiji Yanai; Hidetoshi Kawakubo; Bingyu Qiu (CIVR, 2009)

An analysis of the relation between visual concepts and geo-locations using geotagged images on the web. - Hidetoshi Kawakubo; Keiji Yanai (ICME, 2009)

Automatic Construction of a Folksonomy-Based Visual Ontology. - Hidetoshi Kawakubo; Yuuta Akima; Keiji Yanai (ISM, 2010)

GeoVisualRank: a ranking method of geotagged imagesconsidering visual similarity and geo-location proximity. - Hidetoshi Kawakubo; Keiji Yanai (WWW (Companion Volume), 2011)