RT Journal Article T1 A class of aggregation functions encompassing two-dimensional OWA operators A1 Bustince, Humberto A1 Calvo Sánchez, Tomasa A1 De Baets, Bernard A1 Fodor, János A1 Mesiar, Radko A1 Montero De Juan, Francisco Javier A1 Paternain Dallo, Daniel A1 Pradera, A. AB In this paper we prove that, under suitable conditions, Atanassov’s Ka operators, which act on intervals, provide the same numerical results as OWA operators of dimension two. On one hand, this allows us to recover OWA operators from Ka operators. On the other hand, by analyzing the properties of Atanassov’s operators, we can generalize them. In this way, we introduce a class of aggregation functions – the generalized Atanassov operators – that,in particular, include two-dimensional OWA operators. We investigate under which conditions these generalized Atanassov operators satisfy some properties usually required for aggregation functions, such as bisymmetry, strictness, monotonicity, etc. We also show that if we apply these aggregation functions to interval-valued fuzzy sets, we obtain an ordered family of fuzzy sets. PB Elsevier Science Inc SN 0020-0255 YR 2010 FD 2010 LK https://hdl.handle.net/20.500.14352/42257 UL https://hdl.handle.net/20.500.14352/42257 LA eng NO Bustince, H., Calvo, T., De Baets, B., Fodor, J., Mesiar, R., Montero, J., Paternain, D., Pradera, A.: A class of aggregation functions encompassing two-dimensional OWA operators. Information Sciences. 180, 1977-1989 (2010). https://doi.org/10.1016/j.ins.2010.01.022 DS Docta Complutense RD 12 abr 2025