Dynamics in Logistics by Unknown

Author:Unknown
Language: eng
Format: epub
ISBN: 9783030447830
Publisher: Springer International Publishing

3.2 CSP-TCO Application

The Prolog resolution calculus allows the computation of valid variable allocations and also provides the implementation of meta-predicates for managing solutions and determining a cost optimum. Though the common access to a Prolog knowledge base via read-eval-print console is not user-friendly. We therefore implemented the CSP solver and CSP model as component of a Java-based software tool as illustrated in Fig. 1, which supplies an adequate graphical user interface (GUI) for a logistics service provider. The GUI enables various functionalities regarding the adjustment of TCO parameters, allocating tours, managing vehicle fleets and the calculation as well as prediction of costs. Each functionality is then formulated as a corresponding Prolog query by the query processor which interacts with the Prolog interface. The query processor also receives the reply by the Prolog interpreter and instantly updates affected GUI elements. The Prolog knowledge base holds the TCO model as described above and can be automatically filled with various enterprise data by a CSV-based data importer.

Fig. 1.Software architecture of the TCO CSP application containing a GUI frontend for accessing the Prolog constraint database as well as a data importer for integration into logistics enterprise systems

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