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secondo/Algebras/DistributedClustering/DistributedClustering.examples
2026-01-23 17:03:45 +08:00

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Database: berlintest
Restore : NO
Operator : dbdacscan
Number : 1
Signature: stream(Tuple) x Attr x Attr x text x real x int -> stream(Tuple)
Example : query Kneipen feed dbdacscan [GeoData, ClusterId, secondoHome() +'testN',500.0, 5] sortby[ClusterId] groupby[ClusterId ; C : group count] count
Result : 8
Operator : distsamp
Number : 1
Signature: stream(Tuple) x stream(Tuple) x Id -> bool
Example : query Kneipen feed Kneipen feed head[50] distsamp[GeoData, WId, 12] sortby[WId] groupby[WId; C : group count] count
Result : 12
Operator : fconsume5
Number : 1
Signature: stream x text -> stream
Example :query Kneipen feed Kneipen feed head[200] distsamp[GeoData, WID, 2] filter[.WID = 0] dbdacscan[GeoData, ClusterId,secondoHome() + '/leftNRel.bin',500.0, 5] fconsume5[secondoHome() + '/leftRel.bin'] count
Result : 111
Operator : fconsume5
Number : 2
Signature: stream x text -> stream
Example : query Kneipen feed Kneipen feed head[200] distsamp[GeoData, WID, 2] filter[.WID = 1] dbdacscan[GeoData, ClusterId, secondoHome() + '/rightNRel.bin',500.0, 5] fconsume5[secondoHome() + '/rightRel.bin'] count
Result : 173
Operator : distclmerge
Number : 3
Signature: text x text x text x text x Attr x Attr x real x int x text x text -> stream(Tuple)
Example : query distclmerge(secondoHome() + '/leftRel.bin' , secondoHome() + '/leftNRel.bin' ,secondoHome() + '/rightRel.bin',secondoHome() + '/rightNRel.bin' , GeoData, ClusterId, 500.0 , 5 , 'DbScan.bin' ,'NeighborFile.bin' ) sortby[ClusterId] groupby[ClusterId ; C : group count] count
Result : 8