IDP Site Tagging Scheme
IDP settlements and IDP tents both share the same tagging scheme
idp:camp_site=spontaneous_camp
damage:event=nepal_earthquake_2015
idp:status_yyyymmdd={new,increased,decreased, or empty}
ex:
idp:status_20150427=new
idp:status_20150503=decreased
idp:source_yyyymmdd={add appropriate source}
ex:
idp:source_20150427=CNES, Airbus DS
idp:source_20150503=GeoEye1 DigitalGlobe
You can see in the examples above you have two idp:source tags because you used two imagery source to evaluate the change in the IDP site. You also have two idp:status tags to record the status at two times.