14 citations · 56 across the 15 of their papers we have counts for
4 papers · 1 filter
Computing sets of graded attribute implications with witnessed non-redundancy
Vilem Vychodil
In this paper we extend our previous results on sets of graded attribute implications with witnessed non-redundancy. We assume finite residuated lattices as structures of truth deg…
Relational Division in Rank-Aware Databases
Ondrej Vaverka, Vilem Vychodil
We present a survey of existing approaches to relational division in rank-aware databases, discuss issues of the present approaches, and outline generalizations of several types of…
On sets of graded attribute implications with witnessed non-redundancy
Vilem Vychodil
We study properties of particular non-redundant sets of if-then rules describing dependencies between graded attributes. We introduce notions of saturation and witnessed non-redund…
Rational fuzzy attribute logic
Vilem Vychodil
We present a logic for reasoning with if-then formulas which involve constants for rational truth degrees from the unit interval. We introduce graded semantic and syntactic entailm…