Sigifredo Laengle

  • Citations Per Year
Learn More
Many multicriteria problems in economics and finance require that efficient solutions be found. A recent contribution to production theory established a characterization of efficient points under closedness and free-disposability (Bonnisseau and Crettez in Econ Theory 31(2):213–223, 2007, Theorem 1). However, as will be shown using a number of examples,(More)
Some production models in finance require infinite-dimensional commodity spaces, where efficiency is defined in terms of an ordering cone having possibly empty interior. Since weak efficiency is more tractable than efficiency from a mathematical point of view, this paper characterizes the equality between efficiency and weak efficiency in(More)
The great and dynamic possibilities offered by the information technologies (IT) impose new challenges to the organizations. The new capabilities of IT demand that the skills and abilities of the people in charge of the technological management evolve accordingly. In this context we are intrigued by what is the evolution of the Chief Information Officer(More)
Methods are needed for creating models to characterize verbal communication between therapists and their patients that are suitable for teaching purposes without losing analytical potential. A technique meeting these twin requirements is proposed that uses decision trees to identify both change and stuck episodes in therapist-patient communication. Three(More)
Despite their importance for stakeholders in the criminal justice system, few methods have been developed for determining which criminal behavior variables will produce accurate sentence predictions. Some approaches found in the literature resort to techniques based on indirect variables, but not on the social network behavior with exception of the work of(More)
Date of publication: 9 December 2013 round the world, CEOs and senior managers of healthcare systems are asking themselves how best to deal with the challenges of today’s rapidly changing healthcare landscape. The solutions they opt for must be solidly grounded on fundamental values that will guide future practices, decisions, and standards. The increase in(More)
Modelling criminal trial verdict outcomes using social network measures is an emerging research area in quantitative criminology. Few studies have yet analyzed which of these measures are the most important for verdict modelling or which data classification techniques perform best for this application. To compare the performance of different techniques in(More)