Dear all, I have a very basic question... I need to compare literals that are floats and tried to use two ways. 1) using sh:equals to compare 2 properties and 2) using SPARQL where I filter != different values
For the filter I tried using FILTER (xsd:float(?value1)!=xsd:float(?value1)). or FILTER (?value1!=?value1). Both give the same outcome. Below I listed a summary of the tests I did I think sh:equals treats the literals as strings even though they are floats. It also gives 2 results. I thing this looks like according to the SHACL spec although I didn't if the sh:equals ignores the datatype. However In some cases the result form the SPARQL is kind of strange. It looks like the precision is 10-6, but for the big numbers and when scientific form on float number is used we have something different. What is followed to define the difference? If I use google calculator 100123456.1-100.123459E+06=-2.90000000596 Normally it should be OK to compare different forms of float. 1) using sh:equals in the property shape Value1 ; value 2 ; comparisson result 1.123456 ; 1.123456 ; same 1.1234560 ; 1.1234561 ; different (sh:equals reports it twice) 31.1234560 ; 31.1234561 ;different (sh:equals reports it twice) 30 ; 30.0000001 ; different (sh:equals reports it twice) 30 ; 30.000001 ; different (sh:equals reports it twice) 100123456.0 ; 100123456.1 ; different (sh:equals reports it twice) 100123456.0 ; 100123456.0 ; same 100123456 ; 100.123456E6 ; different (sh:equals reports it twice) 100123456 ; 100.123456E+06 ; different (sh:equals reports it twice) -0.123456789 ; -123.456789E-3 ; different (sh:equals reports it twice) -0.123456789 ; -123.456789E-03 ; different (sh:equals reports it twice) 100123456.1 ; 100.123456E+06 ; different (sh:equals reports it twice) 100123456.1 ; 100.123459E+06 ; different (sh:equals reports it twice) 100123456.1 ; 100123459 ; different (sh:equals reports it twice) 100123456.1 ; 100123459.0 ; different (sh:equals reports it twice) 2) using SPARQL (in the property shape) 1.123456 ; 1.123456 ; same 1.1234560 ; 1.1234561 ; different 31.1234560 ; 31.1234561 ;different 30 ; 30.0000001 ; same 30 ; 30.000001 ; different 100123456.0 ; 100123456.1 ; same 100123456.0 ; 100123456.0 ; same 100123456 ; 100.123456E6 ; same 100123456 ; 100.123456E+06 ; same -0.123456789 ; -123.456789E-3 ; same -0.123456789 ; -123.456789E-03 ; same 100123456.1 ; 100.123456E+06 ; same 100123456.1 ; 100.123459E+06 ; same 100123456.1 ; 100123459 ; same 100123456.1 ; 100123459.0 ; same Best regards Chavdar -- You received this message because you are subscribed to the Google Groups "TopBraid Suite Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to topbraid-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/topbraid-users/63a7e8ba-468e-4803-a1c4-31afca5d55e9n%40googlegroups.com.
