24
Copyright © 2014 Open Geospatial Consortium. prov:hadPlan f2n:52N_ConflationAlgorithm_v1 ;
prov:hadRole nga:Client ] .
f2n:52N_ConflationExecution20140305 prov:startedAtTime 2014-03- 03T08:10:00xsd:dateTime ;
prov:endedAtTime 2014-03-05T10:20:00xsd:dateTime .
Figure 13 — Conflation execution is defined by the use of the 52N algoritm and the date.
7.5.2 Defining the features and describing their respective data model
In this process step, one feature example and the properties of the first source dataset are involved, so they have to be defined. The same for the other features
and properties.
usgs:USGS_Feature1 a usgs:USGS_Feature . usgs:USGS_Position1 a usgs:USGS_Position .
usgs:USGS_Address1 a usgs:USGS_Address . usgs:USGS_Feature1 ows:hadGeometry usgs:USGS_Position1;
ows:hadProperty usgs:USGS_Address1 .
The same for the second source dataset.
osm:OSM_Feature1 a osm:OSM_Feature . osm:OSM_Position1 a osm:OSM_Position .
osm:OSM_Address1 a osm:OSM_Address . osm:OSM_Feature1 ows:hadGeometry osm:OSM_Position1;
ows:hadProperty osm:OSM_Address1 .
The same for the target dataset note that the target dataset follows the first source data model.
usgs_conf:conflated_Feature1 a usgs:USGS_Feature . usgs_conf:conflated_Position1 a usgs:USGS_Position .
usgs_conf:conflated_Address1 a usgs:USGS_Address . usgs_conf:conflated_Feature1 ows:hadGeometry osm:OSM_Position1;
ows:hadProperty osm:OSM_Address1 .
Copyright © 2014 Open Geospatial Consortium.
25 The three example features are part of the dataset:
usgs:USGSMap prov:hadMember usgs:USGS_Feature1 . osm:OSMMap prov:hadMember osm:OSM_Feature1 .
usgs_conf:conflatedMap prov:hadMember usgs_conf:conflated_Feature1 .
7.5.3 Recording the provenance information about the new conflated features
Now it is time to describe the feature and attribute level provenance for this process step. Here we provide some examples of different possibilities.
7.5.3.1 Feature level
The conflation process step used some source features:
f2n:52N_ConflationExecution20140305 prov:used usgs:USGS_Feature1; prov:used usgs:USGS_Feature2;
prov:used osm:OSM_Feature1 .
1. The resulting feature was not affected by the conflation execution and it is copied as it is.
usgs_conf:conflated_Feature1 owl:sameAs usgs:USGS_Feature1 .
2. The feature is a revision of a first source feature
usgs_conf:conflated_Feature2 prov:wasRevisionOf usgs:USGS_Feature2 .
3. In fact, the feature is derived from a second source feature
usgs_conf:conflated_Feature2 prov:wasDerivedFrom osm:OSM_Feature1 .
The conflation process step used a feature of the first source as a reference source information and a feature second source as a crowd source information:
f2n:52N_ConflationExecution20140305 prov:qualifiedUsage [ a prov:Usage ;
prov:entity usgs:USGS_Feature1 ; prov:hadRole ows10:ReferencedMapSource
f2n:52N_ConflationExecution20140305 prov:qualifiedUsage [
a prov:Usage ; prov:entity osm:OSM_Feature1 ;
prov:hadRole ows10:crowdsourcedMapSource ] .
The conflated feature was generated by the conflation process step in the time 2014-03-05 10:20.
usgs_conf:conflated_Feature1 prov:wasGeneratedBy f2n:52N_ConflationExecution20140305 .
