Enhancing geographical information systems capabilities with multi-criteria evaluation functions

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Automatic Metro Map Layout Using Multicriteria Optimization

This paper describes an automatic mechanism for drawing metro maps. We apply multicriteria optimization to find effective placement of stations with a good line layout and to label the map unambiguously. A number of metrics are defined, which are used in a weighted sum to find a fitness value for a layout of the map. A hill climbing optimizer is used to reduce the fitness value, and find improved map layouts. To avoid local minima, we apply clustering techniques to the map the hill climber moves both stations and clusters when finding improved layouts. We show the method applied to a number of metro maps, and describe an empirical study that provides some quantitative evidence that automatically-drawn metro maps can help users to find routes more efficiently than either published maps or undistorted maps. Moreover, we found that, in these cases, study subjects indicate a preference for automatically-drawn maps over the alternatives

Selecting the Flexible Last-Mile Delivery Models Using Multicriteria Decision-Making

Postal service providers can reorganise the last-mile delivery process within the scope of universal service and apply some of the flexible models for the organisation of the delivery. In this paper, the question of the selection of Flexible Last-Mile Delivery Models (FLMDMs) is treated using multicriteria decision-making. We have identified four different sustainable last-mile delivery models with an emphasis on the number of delivery workers. One postal service provider from Europe was selected, where the proposed FLMDMs were tested. The proposed last-mile delivery models are ranked using Multiple Criteria Decision Analysis (MCDA) techniques. In this context, MCDA techniques are used to make a comparative assessment of alternatives. The obtained results suggest the AB delivery model as the optimal choice for the last-mile delivery and complete allocation of the number of delivery workers

Multicriteria decision analysis for fruits and vegetables routes based on the food miles concept

The aim of this research is to propose a performance evaluation system to rank the efficiency of fruit and vegetables (FV) distribution routes based on selected criteria related to logistic, distribution practices and physical losses that are part of the attributes associated with the food miles concept. To achieve this end, the multicriteria Preference Ranking Method for Enrichment Evaluation (PROMETHEE) was adopted. The distance that a food item travels from the field to the table is an important logistical indicator and sooner it arrives in the hands of the consumer, the greater the degree of preservation of quality, i.e., the integrity of the item’s sensory and organoleptic characteristics. An analysis of the logistics involved should take into consideration issues such as distance, transportation time, pollutant emissions, conditioning, and all the other attributes pertinent to the food miles concept. Short routes were the most efficient, however the perishability of the product was not the main factor, this is because aspects related to a good ability to offer products, transport them safely and assertiveness in predicting demand contributed more to the high efficiency rates, thereby, it is the short routes that service the predilections of consumers who value locally produced food. Highlights: The performance of the efficiency of fruit and vegetables (FV) distribution based on food miles concept revels that the distance attribute is an important parameter; Product perishability was not the main factor that influenced the routes efficiency raking; Routes performance is multidimensional, considering operational aspects and sales management, safe transportation and assertiveness in predicting demand further, contributed to efficiency rates and reducing food losses and waste.  The aim of this research is to propose a performance evaluation system to rank the efficiency of fruit and vegetables (FV) distribution routes based on selected criteria related to logistic, distribution practices and physical losses that are part of the attributes associated with the food miles concept. To achieve this end, the multicriteria Preference Ranking Method for Enrichment Evaluation (PROMETHEE) was adopted. The distance that a food item travels from the field to the table is an important logistical indicator and sooner it arrives in the hands of the consumer, the greater the degree of preservation of quality, i.e., the integrity of the item’s sensory and organoleptic characteristics. An analysis of the logistics involved should take into consideration issues such as distance, transportation time, pollutant emissions, conditioning, and all the other attributes pertinent to the food miles concept. Short routes were the most efficient, however the perishability of the product was not the main factor, this is because aspects related to a good ability to offer products, transport them safely and assertiveness in predicting demand contributed more to the high efficiency rates, thereby, it is the short routes that service the predilections of consumers who value locally produced food. Highlights: The performance of the efficiency of fruit and vegetables (FV) distribution based on food miles concept revels that the distance attribute is an important parameter; Product perishability was not the main factor that influenced the routes efficiency raking; Routes performance is multidimensional, considering operational aspects and sales management, safe transportation and assertiveness in predicting demand further, contributed to efficiency rates and reducing food losses and waste

ANALIZA WIELOKRYTERIALNA I WYBÓR OPTYMALNEJ TRASY ROUTINGU W SIECIACH AD-HOC

The paper discusses the practical aspects of application of multicriterion approach to solving the problem of an optimal routing for wireless self-organizing networks. As the initial metrics analyzed  convergence time, memory overhead, control overhead, time complexity and communication complexity.W artykule omówiono praktyczne aspekty zastosowania podejścia wielokryterialnego do rozwiązania problemu optymalnego trasowania dla bezprzewodowych samoorganizujących się sieci. Jako początkowe metryki analizowano czas zbieżności, narzut pamięci, narzut sterowania, złożoność czasu i złożoność komunikacji