Wikimedia does offer a sort of general procedure for this: you can check to see 
the updates since the last dump and do per-resource changes.

https://www.wikidata.org/wiki/Wikidata:Data_access#Incremental_updates

But perhaps more efficiently for yourself, you could use their incremental 
dumps:

https://dumps.wikimedia.org/other/incr/wikidatawiki/

which are for some reason only provided in XML. 

ajs6f

> On Nov 24, 2017, at 12:24 PM, Laura Morales <[email protected]> wrote:
> 
>> Laura, can you tell us a little more about why you are trying to avoid 
>> transmitting the whole graph? Is it because of an unreliable network between 
>> your client and Fuseki or because of something else?
> 
> Wikidata is about 4 billion triples, and it takes a lot of time to create the 
> TDB store from the nt file. They release a new dump about once a week, and I 
> would like to update my local copy when they release a new dump. Reloading 
> the entire graph from scratch every time seems very inefficient (as well as 
> an intensive process) considering that only a tiny % of the wikidata graph 
> changes in a week.

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