Questions for From SPARQL to Rules Jesse Weaver 2

Question is for the Presentation: Questions for From SPARQL to Rules
Question is asked by: Jesse Weaver
The Question is: In section 2.2, the valuation of a FILTER R on substition \theta, denoted R\theta can result in an error if R is of the form R=(R1 ^ R2) and (R1\theta = error or R2\theta = error). Wouldn't it make more sense to redefine this condition as R=(R1 ^ R2) and (R1\theta = error or R2\theta = error) and (R1\theta != false and R2\theta != false)? This would be similar to the condition if R=(R1 v R2).

Question asked	In section 2.2, the valuation of a FILTER … In section 2.2, the valuation of a FILTER R on substition \theta, denoted R\theta can result in an error if R is of the form R=(R1 ^ R2) and (R1\theta = error or R2\theta = error). Wouldn't it make more sense to redefine this condition as R=(R1 ^ R2) and (R1\theta = error or R2\theta = error) and (R1\theta != false and R2\theta != false)? This would be similar to the condition if R=(R1 v R2). e similar to the condition if R=(R1 v R2).
Question asked by	Jesse Weaver +
Question for the Presentation	Questions for From SPARQL to Rules +