The current taxi operation mode features high ratio of vacant taxies roaming the streets, while lots of potential customers complaining being unable to find a taxi. The major reason for this inefficiency is that the current taxi dispatch system is incapable of exchanging information between taxi drivers, customers and the dispatch system in a real-time manner. This paper presents an approach to...

data types, inheritance, dynamic binding and garbage collection. bstract data types provide encapsulation and inheritance eases reuse. Both promote extensibility and modi ability. These two requirements seem widely accepted and we will not address them further. ynamic binding of functions to function names is one key to the exibility and extensibility of object-oriented languages. It allows new...

1. M.Basu, “Dynamic economic emission dispatch using non-dominated sorting genetic algorithm-II,” Electrical power and Energy systems 30 (2008) 140-149. 2. Li xuebin , “Study of multi-objective optimization and multi-attribute decision-making for dynamic economic emission dispatch,” Electric power components and systems, vol. 37: pp 1133-1148, 2009. 3. Elaiw A.M., Xia X,.Shehata A.M, “ Hydrid D...

Dynamic Object-Oriented languages allows for dynamic deenition of new classes, new generic functions and new methods. This paper proposes a single and compact data structure to, at the same time, facilitate the addition of new classes, generic functions or methods, and still ensure a fast method selection. Within a dynamic Object-Oriented language, new classes, new generic functions and new met...

The eeciency of dynamic dispatch is a major impediment to the adoption of multi-methods in object-oriented languages. In this paper, we propose a simple multi-method dispatch scheme based on compressed dispatch tables. This scheme is applicable to any object-oriented language using a method precedence order that satisses a speciic monotonous property (e.g., as Cecil and Dylan), and guarantees t...

Object-oriented systems must implement message dispatch efficiently in order not to penalize the object-oriented programming style. We characterize the performance of most previously published dispatch techniques for both staticallyand dynamically-typed languages with both single and multiple inheritance. Hardware organization (in particular, branch latency and superscalar instruction issue) si...

We’ll write τabs for the type inside the existential. The function new takes a class name and instance data for that class and constructs an object, while the function send takes an object and a method name and produces an element of the method’s result type. Given a dispatch matrix edm : τdm, there are two natural ways of implementing ∃tobj.τabs. The first, which is analogous to the traditiona...

Message dispatch in object-oriented programming (OOP) involves target method lookup in dispatch table/tree. Reflective environment builds dispatch data-structure at runtime as types can be added at runtime. Hence, algorithms for reflective environments require dynamic data structure for dispatch. In this paper, we propose a tree-based algorithm for multiple dispatch in reflective runtime enviro...