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"decision‐making models"
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Constrained nested logit model: formulation and estimation
A model of traveller behaviour should recognise the exogenous and endogenous factors that limit the choice set of users. These factors impose constraints on the decision maker, which constraints may be considered implicitly, as soft constraints imposing thresholds on the perception of changes in attribute values, or explicitly as hard constraints. The purpose of this paper is twofold: (1) To present a constrained nested logit-type choice model to cope with hard constraints. This model is derived from the entropy-maximizing framework. (2) To describe a general framework to deal with (dynamic) non-linear utilities. This approach is based on Reproducing Kernel Hilbert Spaces. The resulting model allows the dynamic aspect and the constraints on the choice process to be represented simultaneously. A novel estimation procedure is introduced in which the utilities are viewed as the parameters of the proposed model instead of attribute weights as in the classical linear models. A discussion on over-specification of the proposed model is presented. This model is applied to a synthetic test problem and to a railway service choice problem in which users choose a service depending on the timetable, ticket price, travel time and seat availability (which imposes capacity constraints). Results show (1) the relevance of incorporating constraints into the choice models, (2) that the constrained models appear to be a better fit than the counterpart unconstrained choice models; and (3) the viability of the approach, in a real case study of railway services on the Madrid–Seville corridor (Spain).
Journal Article
Advanced business analytics : essentials for developing a competitive advantage
\"The present book provides an enterprise-wide guide for anyone interested in pursuing analytic methods in order to compete effectively. It supplements more general texts on statistics and data mining by providing an introduction from leading practitioners in business analytics and real case studies of firms using advanced analytics to gain a competitive advantage in the marketplace. In the era of \"big data\" and competing analytics, this book provides practitioners applying business analytics with an overview of the quantitative strategies and techniques used to embed analysis results and advanced algorithms into business processes and create automated insight-driven decisions within the firm. Numerous studies have shown that firms that invest in analytics are more likely to win in the marketplace. Moreover, the Internet of Everything (IoT) for manufacturing and social-local-mobile (SOLOMO) for services have made the use of advanced business analytics even more important for firms. These case studies were all developed by real business analysts, who were assigned the task of solving a business problem using advanced analytics in a way that competitors were not. Readers learn how to develop business algorithms on a practical level, how to embed these within the company and how to take these all the way to implementation and validation.\"--Back cover.
Book
Influencer l'attention des décideurs: Les pratiques d'« issue-selling » des risk managers
In a complex environment and information overload, managing decision-makers' attention is a challenge for companies. This article studies \"issue-selling\", i.e. how an actor can influence decisional attention through different channels. The analysis of risk managers' practices reveals four issue-selling postures (pedagogue, supervisor, challenger, stimulator). Those results refine the concept of issue-selling and shed light on the roles of risk managers in decision-making.
Magazine Article
Gamme de produits et fidélisation des consommateurs dans les catégories d'achat fréquent : proposition d'un cadre conceptuel et d'un modèle diagnostic/Product-lines and consumer loyalty in frequently purchased product categories: Proposition of a conceptual framework and a diagnostic model
Within a category, brands frequently offer product-lines containing many products. Yet. researches consider almost exclusively behavioral loyalty at the \"brand\" level, without considering the products within the brand's line. Moreover, only longitudinal loyalty is considered, thus neglecting instantaneous loyalty. We propose a breakdown of behavioral loyalty based on the unit of choice purchased (a specific product vs. several products in the brand line) and on the temporal framework (across vs. within shopping trips). A logit model enables the analysis of performance of brand product-lines within a category, and to propose managerial insights.
Journal Article
Managers et espions
En 2011, le constructeur automobile Renault licencie brutalement trois cadres soupçonnés d’espionnage industriel. Ils se révèleront en fait être innocents. Si c’est l’extraordinaire erreur décisionnelle qui saute aux yeux, l’analyse approfondie de celle-ci révèle plusieurs processus déviants au sein des organisations : paranoïa organisationnelle, persistance dans l’action inadéquate nourrie par le secret et le mensonge, développement de micro-institutions aux pratiques déviantes. Ces processus nous invitent à réfléchir sur les écueils possibles guettant les acteurs organisationnels. In 2011, the French car manufacturer Renault suddenly fires three managers suspected of spying. These executives were in fact innocent. Such an astounding mistake of decision-making (the most visible feature of this case) conceals several underlying deviant processes: organizational paranoia, follow-up of inadequate actions fed by secrecy and lie, development of micro-institutions with deviant practices. Such processes invite us to think about possible pitfalls organizational actors are likely to be trapped into.
Journal Article
Prise de décision financière
Ce livre est une introduction aux concepts et modèles de base de la théorie financière. Il s’adresse aux étudiants en première année de doctorat en finance ou dans des programmes de maîtrise spécialisée en finance qui aspirent à avoir une meilleure compréhension des modèles de base des théories d’évaluation des actifs financiers en temps discret et des modèles d’équilibre.
eBook