In general, the properties of the conditional distribution of multiple period returns do not follow easily from the one-period data generating process. This renders computation of Value-at-Risk and Expected Shortfall for multiple period returns a non-trivial task. In this paper we consider some...

In this note it is argued that the estimation error in Value-at-Risk predictors gives rise to underestimation of portfolio risk. We propose a simple correction and find in an empirical illustration that it is economically relevant.

In the estimation of risk measures such as Value at Risk and Expected shortfall relatively short estimation windows are typically used rendering the estimation error a possibly non-negligible component. In this paper we build upon previous results for the Value at Risk and discuss how the...

The Internet-driven electronic marketplace (IEMP) has been presented as a way to enhance collaboration between buyers and suppliers while generating significant advantages for both parties. Nevertheless, the introduction of Online Reverse Auctions (ORA) in the negotiation process has been...

Synthèse pour comprendre les enjeux de la relation client et mettre en oeuvre des stratégies client adaptées. Traite des questions stratégiques, technologiques, organisationnelles en interaction avec les problématiques de marketing.

La gestion de la relation client (GRC en français, ou CRM en anglais pour Customer Relationship Management) est un champ en plein développement où se combinent technologies de l'information, marketing et stratégie en vue d'accroître la performance de l'entreprise et sa différentiation...

Comment choisir et instaurer une relation ? Comment adapter l'organisation pour mettre en oeuvre la stratégie retenue ? Comment analyser les nombreuses données client collectées pour prendre les meilleures décisions ? Quels outils utiliser pour soutenir la stratégie relationnelle ? Gestion...