In this paper, we study a flow shop batch processing machines scheduling problem. The fuzzy due dates are considered to make the problem more close to the reality. The objective function is taken as the weighted sum of fuzzy earliness and fuzzy tardiness. In order to tackle the given problem, we propose a hybrid electromagnetism-like (EM) algorithm, in which the EM is hybridized with a diversif...

Engineering and scienti c measurement results of continuous quantities are not precise numbers but more or less non-precise. Therefore so-called non-precise numbers are necessary to describe measurement results. Non-precise numbers are special fuzzy subsets of the set of real numbers. For vector quantities so-called fuzzy vectors are the best up to date model for related measurements.

This work discusses the application of the cascade, multitemporal classification method based on fuzzy Markov chains originally introduced in (Feitosa et al. 2009), over a set of IKONOS images of urban areas within the city of Rio de Janeiro, Brazil. The method combines the fuzzy, monotemporal, classification of a geographical region in two points in time to provide a single unified result. The...

Received (received date) Revised (revised date) In this paper a technique is proposed to tolerate missing values based on a system of fuzzy rules for classiication. The presented method is mathematically solid but nevertheless easy and eecient to implement. Three possible applications of this methodology are outlined: the classiication of patterns with an incomplete feature vector, the completi...

The aim of this work is to integrate the ideas of flexibility and uncertainty into Allen’s interval-based temporal logic [1], defining a new formalism (IA) which extends classical Interval Algebra (IA). We refer to Dubois, Fargier & Prade approach to Fuzzy Constraint Satisfaction Problem (FCSP ) [3], in which constraints are satisfied to a degree; this framework is based on Fuzzy Sets and Possi...

To date, nonlinearL∞-gain control problems have not been solved by the conventional control methods for the nonlinear dynamic systems with persistent bounded disturbances. This study introduces a fuzzy control design to deal with the nonlinear L∞-gain output feedback control problem. First, the Takagi and Sugeno (T–S) fuzzymodel is employed to approximate the nonlinear dynamic system. Next, bas...

This paper studies a practical multi-factory job allocation and scheduling problem involving inland and maritime transport limits. A new heuristic called Due-date Based Cut-off rule (DBC) is developed to improve the computational efficiency of both exact and genetic algorithms (GA). Except the application of DBC, this proposed GA is guided by a novel fuzzy controller aimed at eliminating the dr...