Ofer Arieli Anna Zamansky Non-deterministic Distance Semantics for Handling Incomplete and Inconsistent Data. 793-804 2009 ECSQARU http://dx.doi.org/10.1007/978-3-642-02906-6_68 conf/ecsqaru/2009 db/conf/ecsqaru/ecsqaru2009.html#ArieliZ09