if_add                  Intuitionistic fuzzy arithmetic (Xu operations)
if_aggregate_matrix     Aggregate rows of an IF decision matrix
if_check                Validate IFVs
if_comp                 Complement of an IFV
if_compose              Intuitionistic fuzzy relations: composition and
                        inference
if_defuzzify            Defuzzify IFVs to crisp scores
if_dist                 Distances between intuitionistic fuzzy sets
if_entropy              Entropy of intuitionistic fuzzy sets
if_fuzzify              Fuzzify numeric data into intuitionistic fuzzy
                        values
if_infer                Compositional rule of inference for IFVs
if_pi                   Hesitation degree
if_rank_df              Rank alternatives from aggregated IFVs
if_rule_block           Mamdani-style IF rule block evaluation
if_score                Score, accuracy and ranking of IFVs
if_sim                  Similarity between intuitionistic fuzzy sets
if_topsis               Intuitionistic fuzzy TOPSIS and decision
                        helpers
ifcmeans                Intuitionistic fuzzy c-means (IFCM) clustering
ifkmeans                Intuitionistic fuzzy k-means (hard labels, IF
                        centroids)
ifv                     Create an intuitionistic fuzzy value (IFV)
ifwa                    Intuitionistic fuzzy aggregation operators
is_ifv                  Test / coerce intuitionistic fuzzy values
