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FUZZY ECONOMIC REVIEW, Volume 21

Aggregation methods for fuzzy judgments

Ayesha Syed. Lahore School of Economics, Lahore 53200, Pakistan.

Ismat Beg. Lahore School of Economics, Lahore 53200, Pakistan.

Asma Khalid. Lahore School of Economics, Lahore 53200, Pakistan.

Arrow (1963) established that a group cannot always reach logically consistent collective outcome. Subsequently many developments like premise based, conclusion based and distance based methods have emerged in literature to reach group consistency. This study is focused on the judgment aggregation in fuzzy logic based setting with novel involvement of…
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A formalization of the theory of expertons. theoretical foundations, properties and development of software for its calculation

J.C. Ferrer Comalat. Department of Business Administration. Faculty of Economics and Business Sciences. University of Girona (Spain).

S. Linares Mustarós. Department of Business Administration. Faculty of Economics and Business Sciences. University of Girona (Spain).

D. Corominas Coll. Department of Business Administration. Faculty of Economics and Business Sciences. University of Girona (Spain).

The aim of this article is to present in a formal way the concept of the experton, which is commonly used in practice, and use this formalization to justify its properties and the equivalence between the concept of mathematical expectation of an experton and the expectation of expressed opinions. The…
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Crude oil market and geopolitical events: an analysis based on information-theory-based quantifiers

Aurelio F. Bariviera. Department of Business Management, Universitat Rovira i Virgili, Spain.

Luciano Zunino. Centro de Investigaciones Ópticas (CONICET La Plata-CIC), Argentina | Departamento de Ciencias Básicas, Facultad de Ingeniería, Universidad Nacional de la Plata, Argentina.

Osvaldo A. Rosso. Instituto de Física, Universidad Federal de Alagoas, Brazil | Instituto Tecnológico de Buenos Aires (ITBA), Argentina | Complex Systems Group, Universidad de los Andes, Chile.

This paper analyzes the informational efficiency of oil market during the last three decades, and examines changes in informational efficiency with major geopolitical events, such as terrorist attacks, financial crisis and other important events. The series under study is the daily prices of West Texas Intermediate (WTI) in USD/BBL, commonly…
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Modeling naïve causality in everyday reasonig with fuzzy logic

Luca Iandoli. Department of Industrial Engineering, University of Naples Federico II, Piazzale Tecchio 80, 80125 Naples (Italy), and Stevens Institute of Technology.

Cristina Ponsiglione. Department of Industrial Engineering, University of Naples Federico II, Piazzale Tecchio 80, 80125 Naples (Italy).

Giuseppe Zollo. Department of Industrial Engineering, University of Naples Federico II, Piazzale Tecchio 80, 80125 Naples (Italy).

The aim of this paper is to present a new approach to the representation and elaboration of fuzzy causal reasoning. The proposed approach is based on some results obtained by several studies on causal explanation in the field of cognitive sciences. Drawing form such results, we present a fuzzy linguistic…
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Simulation decomposition: new approach for better simulation analysis of multi-variable investment projects

M. Kozlova. School of Business and Management, Lappeenranta University of Technology, Skinnarilankatu 34, 53850 Lappeenranta, Finland.

M. Collan. School of Business and Management, Lappeenranta University of Technology, Skinnarilankatu 34, 53850 Lappeenranta, Finland.

P. Luukka. School of Business and Management, Lappeenranta University of Technology, Skinnarilankatu 34, 53850 Lappeenranta, Finland.

This paper presents a new method to enhance simulation-based analysis of complex investments that contain multi-variable uncertainty. The method is called “simulation decomposition”. Typically the result of simulation-based investment analysis is in the form of histogram distributions - here we propose a method for first classifying the possible outcomes of…
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Fuzzy grouping variables in economic analysis. a pilot study of a verification of a normative model for r&d alliances

A. Morreale. School of Business and Management, Lappeenranta University of Technology Skinnarilankatu 34, 53850 Lappeenranta, Finland.

J. Stoklasa. Palacký University, Olomouc, Faculty of Arts, Department of Applied Economics Křížkovského 8, 771 47 Olomouc, Czech Republic.

T. Talášek. Palacký University, Olomouc, Faculty of Arts, Department of Applied Economics Křížkovského 8, 771 47 Olomouc, Czech Republic.

Many of the investments decisions facing with uncertainty can be characterized as real options problems. There is evidence of deviation from the predictions derived using such normative models. The proposed research sheds light on the importance of integrating normative models with experimental methods in order to predict and explain such…
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