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Bash Datalog: Answering Datalog Queries with Unix Shell Commands
- polm23 8y agoThis takes queries written in datalog (or Sparql) and compiles them to Bash (using sort, awk etc.) so you can run them on CSV files.
- rajiv_abraham 8y agoI saw this paper just yesterday from another source. This is brilliant in it's simplicity and the performance is pretty impressive. I hope to write something like this in Julia. Wondering if I'm missing something but the example is fact(X, R, Y) :∼ cat facts.tsv locatedIn(X, Y) :- fact(X, "locatedIn", Y). locatedIn(X, Y) :- locatedIn(X, Z), fact(Z, "locatedIn", Y). main(X) :- locatedIn(X, "USA") I think line 3 could just be locatedIn(X, Y) :- locatedIn(X, Z), locatedIn(Z,Y). unless I'm missing something.
- dragonwriter 8y ago> I think line 3 could just be locatedIn(X, Y) :- locatedIn(X, Z), locatedIn(Z,Y). This creates potential infinite recursion, which is why the other form is used.
- rajiv_abraham 8y agoThanks :)
- shele 8y agoWelcome, your arrival is not unexpected: https://news.ycombinator.com/item?id=17970854 https://news.ycombinator.com/item?id=17970854
- rajiv_abraham 8y agohaha. will update if I have anything worthwhile.