Die wissenschaftliche Disziplin Wirtschaftsinformatik (WI) befindet sich in einem Veränderungsprozess, welcher sowohl durch technologischen Fortschritt in der Praxis als auch durch die Entwicklung ihrer Nachbardisziplinen Betriebswirtschaftslehre und Informatik beeinflusst wird. Zudem muss die...

Changes in the sentiment of Dutch public social media messages were compared with changes in monthly consumer confidence over a period of three-and-a-half years, revealing that both were highly correlated (up to r = 0.9) and that both series cointegrated. This phenomenon is predominantly...

Computational methods to gauge investor sentiment from commonly used online data sources that rely on machine learning classifiers and lexicons have shown considerable promise, but suffer from measurement and classification errors. In our work, we develop a simple, direct and unambiguous...