Ricardo Buettner

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To date, a lot of automated negotiation models have been developed and manifold negotiation challenges have been already addressed. However, in order to evaluate the state of the art of automated negotiations a classification structure is needed. This paper proposed a taxonomy for classifying automated negotiations. The evaluation of the state of the art to(More)
Replying to corresponding research calls I experimentally investigate whether a higher level of artificial intelligence support leads to a lower user cognitive workload. Applying eye-tracking technology I show how the user’s cognitive workload can be measure more objectively by capturing eye movements and pupillary responses. Within a laboratory environment(More)
The core objective of this study is to understand individuals IS usage by going beyond the traditional subjective self-reported and objective system-log measures to unveil the delicate process through which users interact with IS. In this study, we conducted a laboratory experiment to capture users’ eye movement and, more importantly, applied a novel(More)
To address shortcomings of predominately subjective measures in empirical IS research on IT usage and human-computer interaction, this paper uses a multi-method experimental analysis extending empirical surveying with objective measures from eyetracking and electrodermal activity (EDA). In a three stage process, objective user performance is observed in(More)
We propose a methodology of an ex ante prediction of users’ performance based on analyzing the pupillary diameter variability captured by ordinary eye-tracking systems. Based on a realistic large-scale experimental evaluation of our methodology we show promising results that pave the way for a dynamic real-time adaption of IT to the user’s mental effort and(More)
The following article is a dissertation project in progress paper. It shows the results of an empirical analysis of 74 publications in the field of automated negotiations. The results show that most of the items (66) imply incomplete or uncertain information, but mainly related to the negotiation partner. Only 12 of them are related to the negotiation item.(More)
We design an efficient and transaction cost reducing Vickrey-Clarke-Groves auction as part of a web service for the work allocation problem in temporary employment agencies. In this auction bids are work contracts with multidimensional salaries. To compute the allocation we assume that every temporary employment worker conveys a utility function specifying(More)
I sketch an interdisciplinary framework for recommender systems searching online social networks for future employees. In contrast to previous approaches my framework covers the whole person-organization environment (P-OE) fit, and so it also includes crucial social components (e.g. workgroup fabric, and organizational culture). In a rudimentary way I show(More)