On 11/08/13 22:29, Tom Morris wrote:
On Sat, Aug 10, 2013 at 2:30 PM, Markus Krötzsch <markus@semantic-mediawiki.org mailto:markus@semantic-mediawiki.org> wrote:
Anyway, if you restrict yourself to tools that are installed by default on your system, then it will be difficult to do many interesting things with a 4.5G RDF file ;-) Seriously, the RDF dump is really meant specifically for tools that take RDF inputs. It is not very straightforward to encode all of Wikidata in triples, and it leads to some inconvenient constructions (especially a lot of reification). If you don't actually want to use an RDF tool and you are just interested in the data, then there would be easier ways of getting it.A single fact per line seems like a pretty convenient format to me. What format do you recommend that's easier to process?
I'd suggest some custom format that at least keeps single data values in one line. For example, in RDF, you have to do two joins to find all items that have a property with a date in the year 2010. Even with a line-by-line format, you will not be able to grep this. So I think a less normalised representation would be nicer for direct text-based processing. For text-based processing, I would probably prefer a format where one statement is encoded on one line. But it really depends on what you want to do. Maybe you could also remove some data to obtain something that is easier to process.
Markus