Markus Stolze

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E-commerce over the World-Wide Web has become a major application area for software development. The volume of goods and services transactions is rapidly growing. Economic theory and observations of the emerging markets suggest that e-commerce sellers will be driven towards offering personalized buying interactions and customized products to escape price(More)
An emerging practice in e-commerce systems is to conduct interviews with buyers in order to identify their needs. The goal of such an interview is to determine sets of products that match implicit requirements. Decision trees structure the interview process by defining which question follows a given answer. One problem related to decision trees is that(More)
Current electronic product catalogs support only hard navigation in the product list. Products or product categories are displayed only if they match a criterion that a user has specified explicitly as a constraint or implicitly by following a navigation link. Hard navigation is problematic if users want to express soft preferences instead of hard(More)
Product catalogs are crucial for electronic commerce on the Internet, but it is still a challenging task for casual users to perform effective product selection. Recently, a promising technique for product selection has been proposed: Incremental restriction on interactive tables. It allows customers to build complex queries with a few mouse clicks, but(More)
Organizations that provide centralized security monitoring of the networks of multiple third-party organizations are faced with a challenging task. The amount of security event data to be processed presents not only a technical challenge, but also a problem-solving challenge to operators. We present a model of the problem-solving process and discuss how(More)
Customer relationship management, one-to-one marketing, recommendation systems, and real-time click mining are common means to create a personalised customer interaction in today’s e-Commerce. However, one major aspect of customisation and adaptation has thus far been neglected – one buyer might assume multiple shopping roles. Searching for a present for an(More)
During a two-day objective structured clinical examination (OSCE), we compared two types of checklists for student performance ratings: paper & pencil vs. digital checklists on iPads. Several subjective and objective measures from 10 examiners were collected and computed. Data showed that digital checklists were perceived as significantly more usable and(More)
This paper presents the design of an extended matchmaking component for electronic markets, which is able to identify negotiable agreements and the issues that are subject to the negotiation, in the case where basic matchmaking fails to find agreements that satisfy the constraints of the seller and the buyer. The foundation for this functionality is the(More)