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SMART : towards spatial internet marketplaces

Abel, David J.; Gaede, Volker; Taylor, Kerry L.; Zhou, … - 1997

Spatial Internet Marketplaces are attractive as a mechanism to enable spatial applications to be built drawing on … services as published by providers on the Internet and bought by customers on an as-required basis. Design ofa Spatial Internet … components required and the special issues in constructing an infrastructure for a Spatial Internet Marketplace. We initially …

Persistent link: https://www.econbiz.de/10009658472

E-privacy : evaluating a new search cost in online environments

Annacker, Dirk; Spiekermann, Sarah; Strobel, Martin - 2001

Electronic Commerce environments increasingly witness a conflict on the subject of e-privacy: While marketers want to maximize their customer knowledge and grasp the identity of their online users, consumers often want to stay anonymous and not reveal private information. The conflict suggests...

Persistent link: https://www.econbiz.de/10009615417

Why firms should care for customers

Königstein, Manfred; Müller, Wieland - 2000

Adopting the indirect evolutionary approach, we show that it might be beneficial for firms on a heterogeneous market not only to care for their profits but also for their respective customers' welfare. -- evolutionary stability ; customer orientation ; heterogenous market ; duopoly

Persistent link: https://www.econbiz.de/10009612021

Quantile hedging

Föllmer, Hans; Leukert, Peter - 1998

In a complete financial market every contingent claim can be hedged perfectly. In an incomplete market it is possible to stay on the safe side by superhedging. But such strategies may require a large amount of initial capital. Here we study the question what an investor can do who is unwilling...

Persistent link: https://www.econbiz.de/10009574876

Efficient hedging : cost versus shortfall risk

Föllmer, Hans; Leukert, Peter - 1999

An investor faced with a contingent claim may eliminate risk by (super-)hedging in a financial market. As this is often quite expensive, we study partial hedges, which require less capital and reduce the risk. In a previous paper we determined quantile hedges which succeed with maximal...

Persistent link: https://www.econbiz.de/10009579176

Should smart investors buy funds with high returns in the past?

Palomino, Frédéric; Uhlig, Harald - 2002

Newspapers and weekly magazines catering to the investing crowd often rank funds according to the returns generated in the past. Aside from satisfying sheer curiosity, these numbers are probably also the basis on which investors pick a fund to invest in. In this article, we fully characterize...

Persistent link: https://www.econbiz.de/10009621416

Hedging and portfolio optimization in illiquid financial markets

Bank, Peter; Baum, Dietmar - 2002

We introduce a general continuous-time model for an illiquid financial market where the trades of a single large investor can move market prices. The model is specified in terms of parameter dependent semimartingales, and its mathematical analysis relies on the non-linear integration theory of...

Persistent link: https://www.econbiz.de/10009625800

Convex measures of risk and trading constraints

Föllmer, Hans; Schied, Alexander - 2001

We introduce the notion of a convex measure of risk, an extension of the concept of a coherent risk measure defined in Artzner et aL (1999), and we prove a corresponding extension of the representation theorem in terms of probability measures on the underlying space of scenarios. As a case...

Persistent link: https://www.econbiz.de/10009615426

Coherent risk measures, valuation bounds, and (my,p)-portfolio optimization

Jaschke, Stefan R.; Küchler, Uwe - 1999

This paper presents a general theory that works out the relation between coherent risk measures, valuation bounds, and certain classes of portfolio optimization problems. It is economically general in the sense that it works for any cash stream spaces, be it in dynamic trading settings, one-step...

Persistent link: https://www.econbiz.de/10009581108

Quantifying the value of initial investment information

Amendinger, Jürgen; Becherer, Dirk; Schweizer, Martin - 2000

We consider an investor maximizing his expected utility from terminal wealth with portfolio decisions based on the available information flow. This investor faces the opportunity to acquire some additional initial information G.. The subjective fair value of this information for the investor is...

Persistent link: https://www.econbiz.de/10009583881