Geo-referenced Pattern Mining
A geo-referenced database represents the data gathered by a set of fixed sensors observing a particular phenomenon over a time period. It is a combination of spatial database and transactional/temporal/utility database .
Types of Geo-referenced databases
Geo-referenced transactional databases
Geo-referenced temporal databases
Geo-referenced utility database
Basic topics
Location/spatial database
Neighborhood database
Geo-referenced transactional database
A transactional database is said to be a geo-referenced transactional database if it contains spatial items. The format of this database is similar to that of transactional database . An example of a geo-referenced transactional database is as follows:
TID
Items
1
Point(0 0) Point(0 1) Point(1 0)
2
Point(0 0) Point(0 2) Point(5 0)
3
Point(5 0)
4
Point(4 0) Point(5 0)
Note: The rules to create a geo-referenced transactional database are same as the rules to create a transactional database. In other words, the format of creating a transaction in a geo-referential database is:
>>> spatialItem1<sep>spatialItem2<sep>...<sep>spatialItemNAn example:
Point(0 0) Point(0 1) Point(1 0)
Point(0 0) Point(0 2) Point(5 0)
Point(5 0)
Point(4 0) Point(5 0)
Geo-referential temporal database
A temporal database is said to be a geo-referential temporal database if it contains spatial items. The format of this database is similar to that of temporal database . An example of a geo-referential temporal database is as follows:
TID
Timestamp
Items
1
1
Point(0 0) Point(0 1) Point(1 0)
2
2
Point(0 0) Point(0 2) Point(5 0)
3
4
Point(5 0)
4
5
Point(4 0) Point(5 0)
Note: The rules to create geo-referential temporal database are same as the rules to create a temporal database. In other words, the format to create geo-referential temporal database is as follows:
>>> timestamp<sep>spatialItem1<sep>spatialItem2<sep>...<sep>spatialItemNAn example:
1 Point(0 0) Point(0 1) Point(1 0)
2 Point(0 0) Point(0 2) Point(5 0)
4 Point(5 0)
5 Point(4 0) Point(5 0)
Geo-referential utility database
A utility database is said to be a geo-referential utility database if it contains spatial items. The format of this database is similar to that of utility database . An example of a geo-referential utility database is as follows:
TID
Transactions (items and their prices)
1
(Point(0 0),100) (Point(0 1),42) (Point(1 0), 20)
2
(Point(0 0), 100) (Point(0 2), 10) (Point(5 0), 30)
3
(Point(5 0), 30)
4
(Point(4 0),30), (Point(5 0),40)
Note: The rules to create geo-referential utility database are same as the rules to create a utility database. In other words, the format to create geo-referential utility database is as follows:
>>> timestamp<sep>spatialItem1<sep>spatialItem2<sep>...<sep>spatialItemN : total utility : utilityA<sep>utilityB<sep>...<sep>utilityNAn example:
1 Point(0 0) Point(0 1) Point(1 0):162:100 42 20
2 Point(0 0) Point(0 2) Point(5 0):140:100 10 30
4 Point(5 0):30:30
5 Point(4 0) Point(5 0):70:30 40