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Journal of Intelligent Information Systems

, Volume 46, Issue 2, pp 347–348 | Cite as

Erratum to: A hierarchical multi-criteria sorting approach for recommender systems

  • Luis Del Vasto-TerrientesEmail author
  • Aida Valls
  • Piotr Zielniewicz
  • Joan Borràs
Erratum
  • 1k Downloads

Erratum to: J Intell Inf Syst

DOI 10.1007/s10844-015-0362-7

Equation 6 of the original version unfortunately contained a mistake. The second condition on Equation 6 says
$$ \mathrm{if}\ {\Phi}_j(a)-{\Phi}_j\left({b}_h^j\right)\ge {\upsilon}_j\left({b}_h^j\right) $$
must be
$$ \mathrm{if}\ {\Phi}_j(a)-{\Phi}_j\left({b}_h^j\right)\ge {p}_j\left({b}_h^j\right) $$
i.e., "υ" must be replace by "p". The correct equation is shown next page:
$$ {c}_j\left(a,{b}_h^j\right)=\left\{\begin{array}{ll}1\hfill & \mathrm{if}\ {\Phi}_j(a)-{\Phi}_j\left({b}_h^j\right)\le {q}_j\left({b}_h^j\right),\hfill \\ {}0\hfill & \mathrm{if}\ {\Phi}_j(a)-{\Phi}_j\left({b}_h^j\right)\ge {p}_j\left({b}_h^j\right),\hfill \\ {}\frac{p_j\left({b}_h^j\right)-\left({\Phi}_j(a)-{\Phi}_j\left({b}_h^j\right)\right)}{p_j\left({b}_h^j\right)-{q}_j\left({b}_h^j\right)}\hfill & \mathrm{otherwise}.\hfill \end{array}\right. $$
(6)

Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Luis Del Vasto-Terrientes
    • 1
    Email author
  • Aida Valls
    • 1
  • Piotr Zielniewicz
    • 2
  • Joan Borràs
    • 3
  1. 1.Departament d’Enginyeria Informàtica i MatemàtiquesUniversitat Rovira i VirgiliTarragonaSpain
  2. 2.Institute of Computing SciencePoznan University of TechnologyPoznanPoland
  3. 3.Parc Científic Tecnològic de Turisme i OciVila-secaSpain

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