a b s t r a c tThis paper presents a project whose main objective is to explore the ontological based development of Domain Specific Languages (DSL), more precisely, of their underlying Grammar. After reviewing the basic concepts characterizing Ontologies and DSLs, we introduce a tool, Onto2Gra, that takes profit of the knowledge described by the ontology and automatically generates a grammar for a DSL that allows to discourse about the domain described by that ontology. This approach represents a rigorous method to create, in a secure and effective way, a grammar for a new specialized language restricted to a concrete domain. The usual process of creating a grammar from the scratch is, as every creative action, difficult, slow and error prone; so this proposal is, from a grammar engineering point of view, of uttermost importance. After the grammar generation phase, the Grammar Engineer can manipulate it to add syntactic sugar to improve the final language quality or even to add specific semantic actions. The Onto2Gra project is composed of three engines. The main one is OWL2DSL, the component that converts an OWL ontology into a complete Attribute Grammar for the construction of an internal representation of all the input data. The two additional modules are Onto2OWL, converts ontologies written in OntoDL into standard OWL, and DDesc2OWL, converts domain instances written in the new DSL into the initial OWL ontology.Published by Elsevier Ltd.
Industries only survive in the modern business world if they are prepared to improve processes whenever it is necessary. Therefore, companies need to adapt and/or modify processes to improve the level of service and reduce needless costs. In this article the logistics problem of planning a ship load operation of a Portuguese cement company is addressed. The objective is to determine the best way to transport the bagged cement from the warehouse to a ship reducing costs and optimizing forklifts operations. A mathematical programming model is proposed showing this methodology as a powerful tool to provide effective support to a more intelligent decision process.
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