Clustering based-on indiscernibility and indiscernibility level. - R. B. Fajriya Hakim; Subanar; Edi Winarko (GrC, 2009)

The Concept of Indiscernibility Level of Rough Set to Reduce the Dendrogram Instability. - R. B. Fajriya Hakim; Subanar; Edi Winarko (FGIT-DTA/BSBT, 2010)

Reducing Hierarchical Clustering Instability Using Clustering Based on Indiscernibility and Indiscernibility Level. - R. B. Fajriya Hakim; Subanar; Edi Winarko (GrC, 2010)

Reducing dendrogram instability using clustering based on indiscernibility and indiscernibility level. - R. B. Fajriya Hakim; Subanar; Edi Winarko (Int. J. Granul. Comput. Rough Sets Intell. Syst., 2011)

On If-Then Multi Soft Sets-Based Decision Making. - R. B. Fajriya Hakim; Eka Novita Sari; Tutut Herawan (ICT-EurAsia, 2014)

Soft Solution of Soft Set Theory for Recommendation in Decision Making. - R. B. Fajriya Hakim; Eka Novita Sari; Tutut Herawan (SCDM, 2014)

A social choice approach to graded soft sets. - Fatia Fatimah; Dedi Rosadi; R. B. Fajriya Hakim; José Carlos R. Alcantud (FUZZ-IEEE, 2017)

N-soft sets and their decision making algorithms. - Fatia Fatimah; Dedi Rosadi; R. B. Fajriya Hakim; José Carlos R. Alcantud (Soft Comput., 2018)

Probabilistic soft sets and dual probabilistic soft sets in decision-making. - Fatia Fatimah; Dedi Rosadi; R. B. Fajriya Hakim; José Carlos R. Alcantud (Neural Comput. Appl., 2019)