I need to import ~300 million RDF triples from YAGO2s, a mechanically-
generated ontology. The Batch Importer (preferably the 2.0 version)
is an obvious candidate for this task, if I can figure out some pesky
usage details. Help?
-r
Background
If a triple defines a relation between subject and object URIs, I
can express it as a Neo4j relationship.
However, many triples define values (eg, hasLatitiude) for entities.
I'd like to express these as node properties, but the Batch Importer
uses TSV syntax, which has a fixed set of properties per node.
Questions
Q: If I define properties in the TSV header, but leave the data
fields empty, what will the Batch Importer do? For example:
name works_on works_in
Michael neo4j Java
Richard Ruby
Xavier
Would this create the following nodes?
Michael:
works_on: neo4j
works_in: Java
Richard:
works_in: Ruby
Xavier:
Q: If I have already used the Batch Importer to define nodes and
relationships, can I use it again to simply add properties?
name speaks
Michael German
Richard English
Given that the nodes file no longer has ID numbers, how do I
tell the Batch Importer which entities to modify?
--
http://www.cfcl.com/rdm Rich Morin [email protected]
http://www.cfcl.com/rdm/resume San Bruno, CA, USA +1 650-873-7841
Software system design, development, and documentation
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