Lazim Abdullah

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The fuzzy analytic hierarchy process (FAHP) has been used to solve various multi-criteria decision-making problems where trapezoidal type-1 fuzzy sets are utilized in defining decision-makers’ linguistic judgment. Previous theories have suggested that interval type-2 fuzzy sets (IT2 FS) can offer an alternative that can handle vagueness and uncertainty.(More)
Intuitionistic fuzzy sets as proposed by Atanassov, have gained much attention from past and latter researchers for applications in various fields. Similarity measures between intuitionistic fuzzy sets were developed afterwards. However, it does not cater the conflicting behavior of each element evaluated. We therefore made some modification to the(More)
The fuzzy analytic hierarchy process (fuzzy AHP) and fuzzy decision making trial and evaluation laboratory (fuzzy DEMATEL) have been used to obtain weights for criteria and relationships among dimensions and criteria respectively. The twomethods could be integrated since it serves different purposes. Previous research suggested that the weights of criteria(More)
Fuzzy time series model has been employed by many researchers in various forecasting activities such as university enrolment, temperature, direct tax collection and the most popular stock price forecasting. However exchange rate forecasting especially using high order fuzzy time series has been given less attention despite its huge contribution in business(More)
Ranking of fuzzy numbers is not an easy task as fuzzy numbers are represented by possibility distributions and they can overlap with each other. Since it was introduced, various approaches on ranking fuzzy numbers have been proposed. The recent ranking fuzzy numbers proposed by Wang and Li is claimed to be the improved version in ranking. However, the(More)
The purpose of this study is to determine the key factors that influencing Libyan students’ achievement in mathematics. A questionnaire of 30 items was distributed for Libyan students in Kuala Lumpur, Malaysia. The total number of the respondents was 201 (74 male and 127 female). One hundred and five students were in grade 4-6, eighty one students grade 7-9(More)
Customers’ satisfaction is one of the very important keys in ever challenging market. There are many approaches that have been used to evaluate customers satisfaction. This paper proposes an evaluation of customer satisfaction from the perceived service quality using fuzzy linguistic. A twenty three-item questionnaire was distributed to thirty four judges(More)