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In order to open-up enterprise applications to e-businessand make them profitable for a communication with otherenterprise applications, a business model is needed showingthe business essentials of the e-commerce business caseto be developed. Currently there are two major businessmodeling techniques - e3-value and REA (Resource-Event-Agent). Whereas(More)
UN/CEFACT's modeling methodology (UMM) is a UML profile for modeling global B2B choreographies. The basic building blocks of UMM are business transactions, which describe the exchange of a business document and an optional response. In addition to these business document exchanges, UMM business transactions mandate business signals that acknowledge the(More)
The United Nation's Centre for Trade Facilitation and Electronic Business (UN/CEFACT) is an e-business standardization body. It is known from its work on UN/EDIFACT and ebXML. One of its ongoing work items is the UN/CEFACT modeling methodology (UMM) for modeling global choreographies of B2B scenarios. The goal of UMM is defining a shared business logic(More)
The development of inter-organizational systems requires a well defined development process. UN/CEFACT's Modeling Methodology (UMM) provides such a development process. We served as the editing team of the UMM 1.0 foundation module, which is defined as a UML profile. First experiences of applying UMM in real world projects have disclosed some limitations.(More)
Personalized recommendation strongly relies on an accurate model to capture user preferences; eliciting this information is, in general, a hard problem. In the field of tourism this initial profiling becomes even more challenging. It has been shown that particularly in the beginning of the travel decision making process, users themselves are often not(More)