Metodología para la búsqueda de consenso en toma de decisiones grupales multicriterio (MCGDM). Caso de estudio en gestión ambiental

La toma de decisiones grupal busca agregar opiniones de varios individuos en una decisión consensuada. Muchos autores coinciden en que nuestra sociedad moderna es en esencia un problema de decisiones grupal. El conflicto en este tipo de decisiones se presenta debido a la asimetría de información presente en las motivaciones y actitudes de cada miembro del grupo mientras se intenta llegar a una decisión grupal agregada. Esta tesis presenta un aporte original al proponer una metodología novedosa para búsqueda de consenso suave (El consenso bajo un cierto grado de acuerdo) en decisiones grupales CGDM, incluyendo la medición y análisis de influencias entre ellos como herramienta para asesorar el cambio de sus preferencias y persuadir a los expertos en situaciones con alta discordancia. Mediante el desarrollo de dos estudios de caso, esta tesis propone un método para reducir las inconsistencias en las matrices de comparación por pares utilizando un algoritmo de censo de tríadas. Además, el documento presenta dos métodos para calcular el peso de los decisores: el primero a través del cálculo de la influencia con una medida de centralidad inversa normalizada, obtenida del tema formal del análisis de redes sociales. El segundo, a través de la modificación sobre la medida de influencia propuesta en el método DEMATEL.Group decision making seeks to add opinions for several individuals in a consensual decision. Many authors agree that our modern society is essentially a problem of group decisions. The conflict in this type of decisions arises due to the symmetry of information present in the motivations and attitudes of each member of the group while trying to reach an aggregate group decision. This thesis presents an original contribution by proposing a novel methodology to seek soft consensus (The consensus under a certain degree of consensus) in CGDM group decisions, including the measurement and analysis of influences between them as a tool to advise the change of their preferences and persuade experts in situations with high discordance. Through the development of two case studies, this thesis proposes a method for reducing inconsistencies in pairwise comparison matrices using a triad census algorithm. Additionally, the document introduces two methods for calculating the weight of decision-makers: the first through the calculation of influence with a normalized inverse centrality measure, obtained from the formal topic of social network analysis. The second one, through the modification over the influence measure proposed in the DEMATEL method.Doctor en Ingeniería - Industria y Organizaciones. Línea de Investigación: Métodos y modelos de optimización, logística y estadística en Ingeniería Industrial y Administrativa.Doctorad

Selección de métodos extractivos y su impacto en la productividad minera – estudio de caso en la minería de carbón colombiana

El objetivo de esta tesis es presentar un nuevo enfoque para la selección del método extractivo mediante una metodología fácilmente replicable; este enfoque puede ser usado en el proceso de planeación y diseño minero. Seleccionar el método extractivo es uno de los problemas de Decisión Multicriterio Discreta (DMD) donde los decisores han tenido problemas en la asignación de peso a cada criterio. Para resolver este problema, este documento aplica el método PAJ y propone una metodología de comprobación mediante la asignación de peso a los criterios con entropía y la selección del método mediante PRES. La selección de un modelo matemático basado en análisis de decisión multicriterio no es tarea fácil; el modelo presentado en este documento muestra su aplicación a un yacimiento de carbón localizado en el costado occidental del “Cerro Tasajero” en Norte de Santander, Colombia. Este documento identifica la necesidad de usar métodos multicriterio cuantitativos como ayuda para probar la exactitud del método PAJ. / Abstract. The purpose of this document is to present a new approach to mining method selection by an easy replicable methodology; this approach can be used in the mine design process planning. Select the mining method is one of the problems of Discrete Multicriteria Decision (DMD) where decision makers have had problems in the assignment of weight to the criteria. To solve this problem, this article applies the AHP method and proposes a testing methodology by weighting the criteria variables with entropy and the selection of the method by PRES. The selection of a mathematical model based on MCDA is not an easy task; the model presented in this document shows its application to a coal reservoir located in the western side of “Cerro Tasajero” in Norte de Santander, Colombia. This document identifies the need to use quantitative multicriteria methods as an aid to prove the accuracy of the AHP method.Maestrí

Influence networks based methodology for consensus reaching in group-decision-making problems

[EN] The purpose of this work is to show a way to improve agreement in group decision problems. This work focuses his effort on the issue refers to assign different importance to every decision-maker. We propose as a novelty a methodology to assign different levels of importance to every decision-maker according to their perceived importance in the group. First, judgments are collected by an html form and use a proposed method based on SNA and DEMATEL to assign weights to decision-makers according to their reputation in the decision-group. Next, we solve the problem using AHP in order to rank the alternatives.Romero-Gelvez, JI.; Cortes-Aldana, FA.; García-Melón, M.; Herrera Cuartas, JA.; Garcia Bedoya, O. (2019). Influence networks based methodology for consensus reaching in group-decision-making problems. CEUR Workshop Proceedings. 2486:280-294. http://hdl.handle.net/10251/155012S280294248

Influence Analysis in Consensus Search - A Multi Criteria Group Decision Making Approach in Environmental Management

The environmental decision problems often are divisive, even in a technical realm, decision makers with strong personalities influence outcomes. The purpose of this study is to define and quantify the factors that affect the conservation objectives of a national natural park located in Colombia, South America adding the judgments of six decision makers with different knowledge (every decision maker is also a stakeholder representative). This paper uses a hybrid multiple criteria group decision making model (MCDM), combining the social network analysis (SNA), analytic hierarchy process (AHP) and similarity measures to solve the consensus and anchoring problem among environmental decision makers. The SNA technique is used to build an influential network relation map among decision makers and to obtain their weights for applying a weighted analytic hierarchy process. Then, the final decision matrices for every decision maker are compared between them in order to identify the consensus level of the problem.Romero Gelvez, JI.; García Melón, M. (2016). Influence Analysis in Consensus Search - A Multi Criteria Group Decision Making Approach in Environmental Management. International Journal of Information Technology and Decision Making. 15(4):791-813. doi:10.1142/S0219622016400034S791813154Regan, H. M., Colyvan, M., & Markovchick-Nicholls, L. (2006). A formal model for consensus and negotiation in environmental management. Journal of Environmental Management, 80(2), 167-176. doi:10.1016/j.jenvman.2005.09.004Reed, M. S. (2008). Stakeholder participation for environmental management: A literature review. Biological Conservation, 141(10), 2417-2431. doi:10.1016/j.biocon.2008.07.014Gomez-Navarro, T., & Garcia-Melon, M. (2011). DESIGN OF AN EFFICIENCY INDEX FOR THE RANK ORDER OF SOIL REMEDIATION TECHNIQUES. Environmental Engineering and Management Journal, 10(5), 603-613. doi:10.30638/eemj.2011.083Aragonés-Beltrán, P., García-Melón, M., & Estruch-Guitart, V. (2015). ANALYSIS OF THE PARTICIPATION OF STAKEHOLDERS IN ENVIRONMENTAL MANAGEMENT BASED ON ANP: APPLICATION TO A SPANISH NATURAL PARK. International Journal of the Analytic Hierarchy Process, 7(1). doi:10.13033/ijahp.v7i1.276Belton, V., & Stewart, T. J. (2002). Multiple Criteria Decision Analysis. doi:10.1007/978-1-4615-1495-4Ginevičius, R., & Podvezko, V. (2009). EVALUATING THE CHANGES IN ECONOMIC AND SOCIAL DEVELOPMENT OF LITHUANIAN COUNTIES BY MULTIPLE CRITERIA METHODS. Technological and Economic Development of Economy, 15(3), 418-436. doi:10.3846/1392-8619.2009.15.418-436Ramzan, N., Degenkolbe, S., & Witt, W. (2008). Evaluating and improving environmental performance of HC’s recovery system: A case study of distillation unit. Chemical Engineering Journal, 140(1-3), 201-213. doi:10.1016/j.cej.2007.09.042Sólnes, J. (2003). Environmental quality indexing of large industrial development alternatives using AHP. Environmental Impact Assessment Review, 23(3), 283-303. doi:10.1016/s0195-9255(03)00004-0Beccali, M., Cellura, M., & Mistretta, M. (2003). Decision-making in energy planning. Application of the Electre method at regional level for the diffusion of renewable energy technology. Renewable Energy, 28(13), 2063-2087. doi:10.1016/s0960-1481(03)00102-2Varvasovszky, Z. (2000). A stakeholder analysis. Health Policy and Planning, 15(3), 338-345. doi:10.1093/heapol/15.3.338Prell, C., Hubacek, K., & Reed, M. (2009). Stakeholder Analysis and Social Network Analysis in Natural Resource Management. Society & Natural Resources, 22(6), 501-518. doi:10.1080/08941920802199202Charnley, S., & Engelbert, B. (2005). Evaluating public participation in environmental decision-making: EPA’s superfund community involvement program. Journal of Environmental Management, 77(3), 165-182. doi:10.1016/j.jenvman.2005.04.002Reed, M. S., Graves, A., Dandy, N., Posthumus, H., Hubacek, K., Morris, J., … Stringer, L. C. (2009). Who’s in and why? A typology of stakeholder analysis methods for natural resource management. Journal of Environmental Management, 90(5), 1933-1949. doi:10.1016/j.jenvman.2009.01.001Bonner, B. L., & Bolinger, A. R. (2013). Separating the confident from the correct: Leveraging member knowledge in groups to improve decision making and performance. Organizational Behavior and Human Decision Processes, 122(2), 214-221. doi:10.1016/j.obhdp.2013.07.005Kirchler, E., & Davis, J. H. (1986). The influence of member status differences and task type on group consensus and member position change. Journal of Personality and Social Psychology, 51(1), 83-91. doi:10.1037/0022-3514.51.1.83Sniezek, J. A., & Henry, R. A. (1989). Accuracy and confidence in group judgment. Organizational Behavior and Human Decision Processes, 43(1), 1-28. doi:10.1016/0749-5978(89)90055-1Bonner, B. L., Sillito, S. D., & Baumann, M. 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Drilling and Completion Material Management Improvement by Stochastic Modelling

The understanding of logistic phenomena entails a broad field of variables that relate to a wider set of considerations. There is a trade-off between general logistic models and mixed models. The former tends to underfit the real case scenarios, while the latter have to be carefully designed in order to have a clear managerial process. In this paper, it is considered a situation observed in a remote production field in Colombian East flatlands, Rubiales. In this case, the supply of materials had challenges in delivery opportunity, inventory rotation

A set cover problem approach for improvising consensus and consistency in large (AHP) groups

Resumen del trabajo presentado en la 25th International Conference on Multiple Criteria Decision Making (MCDM 2019), celebrada en Estambul (Turquía), del 16 al 21 de junio de 201