YUNG-YU CHUANG2018-09-102018-09-102009http://www.scopus.com/inward/record.url?eid=2-s2.0-77249086630&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/349129Learning landmarks by exploiting social mediajournal article10.1007/978-3-642-11301-7_23