Graphity: An efficient Graph Model for Retrieving the Top-k News Feeds for users in social networks

UPDATE: the paper got accepted at SOCIALCOM2012 and the source code and data sets are online especially the source code of the graphity server software is now online! UPDATE II: Download the paper (11 Pages from Social Com 2012 with Co Authors: Thomas Gottron, Jonas Kunze, Ansgar Scherp and Steffen Staab) and the slides I already said …

My Blog guesses your name – Binary Search Exercise for Algorithms and data structures class

Binary Search http://en.wikipedia.org/wiki/Binary_search_algorithm is a very basic algorithm in computer science. Despite this fact it is also important to understand the fundamental principle behind it. Unfortunately the algorithm is tought so early and the algorithm is so simple that beginning students sometimes have a hard time to understand the abstract principle behind it. Also many …

Google, Facebook & co. are not free!

Besides ecommerce one really big Internet business model obviously is the trade or monetarization of data. This Blogpost reminded to write an article about this topic. I think the author points out the most important facts! Services like Facebook / gmail / Youtube and so on are not free. Moneywise they are free of charge but …