TY - JOUR A1 - Migliaccio, F. A1 - Carrion, D. A1 - Ferrario, F. T1 - SEMANTIC VALIDATION OF SOCIAL MEDIA GEOGRAPHIC INFORMATION: A CASE STUDY ON INSTAGRAM DATA FOR EXPO MILANO 2015 JO - Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci. J1 - ISPRS-Archives VL - XLII-2/W13 SP - 1321 EP - 1326 Y1 - 2019/06/05 PB - Copernicus Publications SN - 2194-9034 UR - https://isprs-archives.copernicus.org/articles/XLII-2-W13/1321/2019/ L1 - https://isprs-archives.copernicus.org/articles/XLII-2-W13/1321/2019/isprs-archives-XLII-2-W13-1321-2019.pdf DO - 10.5194/isprs-archives-XLII-2-W13-1321-2019 ER -