Bipolar Queries and Relative Object Qualification in Scope of User-Assisted Database Querying

Two similar approaches to the modeling of bipolar user preferences, namely bipolar queries (and their extension to contextual bipolar queries) and queries with relative object qualification, are presented from the point of view of a user-assisted database querying. Their close relation is discussed, similarities and differences highlighted and possible disadvantages for the user studied. Then a direct, practical comparison of both approaches supported by computational examples on a simplified, yet realistic data set is presented and discussed and possible implementation and usage recommendations are made.