In this study, we improved the variable neighborhood search (VNS) algorithm for solving uncapacitated multilevel lot-sizing (MLLS) problems. The improvement is twofold. First, we developed an effective local search method known as the Ancestors Depth-first Traversal Search (ADTS), which can be...

We compare the effect of anonymous social network ratings (Yelp.com) and peer group recommendations on restaurant demand. We conduct a two stage choice experiment and combine it with online social network reviews from Yelp.com and find that peers have a stronger impact on restaurant demand than...

The design of business processes often ignores detailed consideration of service cost. With competitive market pressure, this has become a key factor for the service sector. The ideas discussed in this paper are a result of research into automating the re-engineering of business processes. This...