Esquema de derivación consistente de prioridades en un marco de consenso

La toma de decisiones impregna la actividad humana. Con frecuencia, la decisión no es simple porque involucra elementos cualitativos, subjetivos, intangibles. En diversos métodos de decisión multi-criterio, los elementos protagonistas de tales procesos son comparados por pares, y tales comparaciones se utilizan para construir una matriz de comparaciones, de cuyo estudio emerge la decisión. En AHP (Analytic Hierarchy Process), por ejemplo, las prioridades se obtienen vía el vector propio de Perron de tales matrices. Para que la decisión sea adecuada, no obstante, las comparaciones deben ser aceptablemente consistentes. Pero cuando se comparan muchos elementos, la consistencia puede flaquear, algo inherente a la condición humana. En tales casos, mecanismos adecuados deben poder mejorar la consistencia, obviamente, alterando algunos de los juicios emitidos. Por ejemplo, se puede mejorar la consistencia mediante técnicas de proyección en espacios vectoriales. Cabe, entonces, la posibilidad de que quien emitió tales juicios no esté de acuerdo con algunos cambios. Procede llevar a cabo una negociación que equilibre el juicio emitido con la necesidad de alcanzar cierta consistencia. En el trabajo académico que desarrollan en la asignatura Matemáticas II de la doble titulación TELECO+ADE, los alumnos utilizan estas ideas. En este artículo presentamos un procedimiento de negociación que sea amigable para el actor que emite los juicios. Para ello, utilizamos una técnica algebraica de análisis de sensibilidad que permite identificar los elementos de juicio más susceptibles de cambio. Esto, a priori, será más asumible para el actor, y se espera se muestre más favorable a aceptar los cambios que se le proponen.Izquierdo Sebastián, J.; Benítez López, J.; Carpitella, S. (2019). Esquema de derivación consistente de prioridades en un marco de consenso. http://hdl.handle.net/10251/122998DE

Constrained consistency enforcement in AHP

Decision-making in the presence of intangible elements must be based on a robust, but subtle, balance between expert know-how and judgment consistency when eliciting that know-how. This balance is frequently achieved as a trade-off reached after a feedback process softens the tension frequently found between one force steadily pulling towards (full) consistency, and another force driven by expert feeling and opinion. The linearization method, developed by the authors in the framework of the analytic hierarchy process, is a pull-towards-consistency mechanism that shows the path from an inconsistent body of judgment elicited from an expert towards consistency, by suggesting optimal changes to the expert opinions. However, experts may be reluctant to alter some of their issued opinions, and may wish to impose constraints on the adjustments suggested by the consistency-enforcement mechanism. In this paper, using the classical Riesz representation theorem, the linearization method is accommodated to consider various types of constraints imposed by experts during the abovementioned feedback process

Service quality in airport hotel chains through the lens of online reviewers

Airport hotel chains target the specific and important segment of accommodation near airports, thus benefiting from travelers seeking to stay near an airport. This study addresses service quality by analyzing TripAdvisor online reviews over units from both a high-end and a low-end chain in five European cities (Amsterdam, Brussels, Frankfurt, London, Paris). Using text mining and topic modeling, ten heat matrices were drawn (one per unit) to summarize the main services characterizing the computed topics. Seven hypotheses grounded on existing literature were tested, from which some interesting findings emerged (e.g., related to transfer services, staff, food and beverage, cleanliness, and punctuality). This study contributes to the standardization versus adaptation debate by unveiling a globalized strategy in staff management and breakfast services, while bar services adopt a localized strategy. Transportation services, while not offered by the hotels, are frequently mentioned, which signals hoteliers to interact with local authorities to improve accessibilities.info:eu-repo/semantics/acceptedVersio