Data Mining Practical Machine Learning Tools and Techniques

We will review some of the major results in random graphs and some of the more challenging open problems. We will cover algorithmic and structural questions. We will touch on newer models, including those related to the WWW.

Random graphs

In 1974 an article appeared in Science magazine with the dry-sounding title “Judgment Under Uncertainty: Heuristics and Biases” by a pair of psychologists who were not well known outside their discipline of decision theory. In it Amos Tversky and Daniel Kahneman introduced the world to Prospect Theory, which mapped out how humans actually behave when faced with decisions about gains and losses, in contrast to how economists assumed that people behave. Prospect Theory turned Economics on its head by demonstrating through a series of ingenious experiments that people are much more concerned with losses than they are with gains, and that framing a choice from one perspective or the other will result in decisions that are exactly the opposite of each other, even if the outcomes are monetarily the same. Prospect Theory led cognitive psychology in a new direction that began to uncover other human biases in thinking that are probably not learned but are part of our brain’s wiring.

Thinking fast and slow.

Social Network Analysis

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Flow The Psychology Of Optimal Experience

Research on Digital Nudging has become increasingly popular in the Information Systems (IS) community. This paper presents an overview of the current progress, a critical reflection and an outlook to further research regarding Digital Nudging in IS. For this purpose, we conducted a comprehensive literature review as well as an interview with Markus Weinmann from Rotterdam School of Management at Erasmus University, one of the first scholars who introduced Digital Nudging to the IS community, and Alexey Voinov, director of the Centre on Persuasive Systems for Wise Adaptive Living at University of Technology Sydney. The findings uncover a gap between what we know about what constitutes Digital Nudging and how consequent requirements can actually be put into practice. In this context, the original concept of Nudging bears inherent challenges, e.g. regarding the focus on the individuals' welfare, which hence also apply to Digital Nudging. Moreover, we need a better understanding of how Nudging in digital choice environments differs from that in the offline world. To further distinguish itself from other disciplines that already tested various nudges in many different domains, Digital Nudging Research in IS may benefit from a strong Design Science perspective, going beyond the test of effectiveness and providing specific design principles for the different types of digital nudges.

Status Quo, Critical Reflection and Road Ahead of Digital Nudging in Information Systems Research -- A Discussion with Markus Weinmann and Alexey Voinov

Under the brand name “sciebo – theCampuscloud” (derived from “science box”) a consortium of more than 20 research and applied science universities started a large scale private cloud storage service hosted on premise at the universities designed to be available for up to 500,000 students and researchers in North Rhine-Westphalia. Starting with the much anticipated data privacy compliant sync & share functionality, sciebo offers the potential to become a more general cloud platform for collaboration and research data management which will be actively pursued in upcoming scientific and infrastructural projects. This project report describes the formation of the venture, its targets and the technical and the legal solution as well as the current status and the next steps.

sciebo – the Campuscloud: a Sync and Share Cloud Storage Service for the Academic and Research Community in North Rhine-Westphalia

Understanding the Affordances of Conversational Agents in Mental Mobile Health Services

Zusammfassung Nachdem sich die private Nutzung von Social Media in den letzten Jahren stark verbreitet hat, haben sich nunmehr auch Unternehmen verstärkt mit den Potenzialen sowohl der kundenorientierten (Facebook, Twitter etc.) als auch der intraorganisationalen (z. B. IBM Connections, Microsoft Sharepoint, Yammer o. ä.) Einsatzmöglichkeiten auseinandergesetzt. In diesem Artikel blicken wir auf die bisher stattgefundene Nutzenbetrachtung in der Wissenschaft bzgl. Social Software zurück und diskutieren den aktuellen Stand in diesem Forschungsgebiet. Der Artikel zeigt, dass die Mehrwertmessung des Einsatzes von Social Media problematisch, jedoch sowohl für die Wissenschaft als auch die Praxis von hoher Bedeutung ist Summary After the widespread of social media for private purposes within the last years, companies also started to explore the potential benefits of professional social software usage by focusing on customer interaction (e.g. via Facebook or Twitter) as well as on company-internal purposes (e.g. via Wikis, Blogs, etc.). In this article, we review and reflect the status quo of the scientific discussion of potential benefits that are induced by social software. We show, that the measurement of the added value of social software is difficult to perform and yet of high importance for practice as well as science.

Christian Meske

Papers

Status Quo, Critical Reflection and Road Ahead of Digital Nudging in Information Systems Research -- A Discussion with Markus Weinmann and Alexey Voinov

sciebo – the Campuscloud: a Sync and Share Cloud Storage Service for the Academic and Research Community in North Rhine-Westphalia

Understanding the Affordances of Conversational Agents in Mental Mobile Health Services

Reflektion der wissenschaftlichen Nutzenbetrachtung von Social Software

A conceptual model of feedback mechanisms in adjusted affordances - Insights from usage of a mental mobile health application