Query SessionDetectionas aCascade

Abstract We propose a cascading method for query session detection in search engine logs (i.e., for finding consecutive queries a user submitted for the same information need). Our approach involves different detection steps that form a cascade in the sense that computationally costly features are applied only after cheapfeatures“failed.”Thiscascadeisdifferenttoprevioussessiondetectionapproaches most of which involve many features simultaneously. Our experiments show thecascadingmethodtosaveruntimecomparedtothestateoftheartwhile the detected sessions ’ accuracy is improved.

Analyzing and Predicting Quality Flaws in User-generated Content: The Case of Wikipedia

Dr. rer. nat

Rehabilitation von Rohrleitungen : Sanierung und Erneuerung von Ver- und Entsorgungsnetzen

Entwickelt im Zuge des Weiterbildenden Studiums Wasser und Umwelt der Bauhaus-Universität Weimar ; Lehrmaterial Fernstudiengang Wasser und Umwelt an der Bauhaus-Universität Weima