This book presents the dynamic extension of the Restricted Random Walk Cluster Algorithm by Schöll and Schöll-Paschinger. The dynamic variant allows to quickly integrate changes in the underlying object set or the similarity matrix into the clusters; the results are indistinguishable from the...

In this paper we present the Company Positioning System CPS, which enables the user to navigate interactively through a given economic environment and analyze companies, trends and patterns within that environment. We describe how the data is analyzed, the strengths and weaknesses of CPS and...

While airline managers learned lessons from the 2001/2003 “double dip†economic crisis, the post 2008 downturn has been more extreme. Airlines reacted quickly in 2008 and adjusted capacities and cost levels but recovery in profits has been slow for many airlines. The dynamics of the...

The severe crisis of the global aviation industry has primarily struck the “classical†Network Carriers (NCs) with their complex hub&spoke operation platforms. The crisis was deepened, but by no means caused, by the terrorist attacks on September 11, 2001. The root cause was the end of...

Most airlines have overcome the immediate effects of the recent global aviation crisis partly because of economic upturn and partly because of massive restructuring. Legacy network carriers had to take on the challenge of low-cost carriers, and regain competitiveness in short- and mid-haul...