document: On fuzzy and probabilistic control charts In this article , different procedures of constructing control charts for linguistic data , based on fuzzy and probability theory , are discussed . Three sets of membership functions , with different degrees of fuzziness , are proposed for fuzzy approaches . A comparison between fuzzy and probability approaches , based on the Average Run Length and samples under control , is conducted for real data . Contrary to the conclusions of Raz and Wang -LRB- 1990 -RRB- the choice of degree of fuzziness affected the sensitivity of control charts
doc_bio_tags: O O O B I I O O O O O O O O O O O B I O O O O O O O O O O O O O O B I O O O O O O O O O O O O O O O O O O O O O O O O B I I O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B O O O
extractive_keyphrases: linguistic data probabilistic control charts membership functions average run length sensitivity
abstractive_keyphrases: fuzzy control charts control chart construction fuzziness degree fuzzy subsets porcelain products