This is my personal list of people that I admire. In a sense I would say if you want to know what I stand for you can just have a brief look at this list and at the values, norms and ideas the people of the list stand for. I have been heavily criticised that …
Tag: open source
Graphity Server for social activity streams released (GPLv3)
It is almost 2 years over since I published my first ideas and works on graphity which is nowadays a collection of algorithms to support efficient storage and retrieval of more than 10k social activity streams per second. You know the typical application of twitter, facebook and co. Retrieve the most current status updates from your …
Metalcon finally gets a redesign – Thinking about high scalability
Finally metalcon.de the social networking site which Jonas, Jens and me created in 2008 gets a redesign. Thanks to the great opportunities at the Institute for Web Science and Technologies here in Koblenz (why don’t you apply for a PhD position with us?) I will have the chance to code up the new version of …
Analyzing the final and intermediate results of the iversity MOOC Fellowship online voting
As writen before Steffen and I participated in the online voting for the MOOC fellowship. Today the competition finished and I would like to say thank you to everyone who so far participated in the voting in particular to the 435 people supporting our course. I did never image to get that many people to …
Please help me to realize my Web science massive open online course
I am asking you for a big favor in this blog post! You can help me to achieve one of my childhood dreams: I am an enthusiastic teacher and love to share information (as you might have seen by reading my blog) Over the last month I have designed a structure for an online course …
Open access and data from my research. Old resources for various topics finally online.
Being strong pro on the topic of open access I always try to publish all my work on my blog but sometimes I am busy or I forget to update so today I took the time to look at all my old drafts and the stuff that hasn’t been published yet. So here is a …
Typology Oberseminar talk and Speed up of retrieval by a factor of 1000
Almost 2 months ago I talked in our oberseminar about Typology. Update: Download slides Most readers of my blog will already know the project which was initially implemented by my students Till and Paul. I am just about to share some slides with you. They explain on one hand how the systems works and on …
Graphity source code and wikipedia raw data is online (neo4j based social news stream framework)
UPDATE: there is now the source code of an entire graphity server application online! 8 months ago I posted the results of my research about fast retrieval of social news feeds and in particular my graph index graphity. The index is able to serve more than 12 thousand personalized social news streams per second in …
Related-work.net – Product Requirement Document released!
Recently I visited my friend Heinrich Hartmann in Oxford. We talked about various issues how research is done in these days and how the web could theoretically help to spread information faster and more efficiently connect people interested in the same paper / topics. The idea of http://www.related-work.net was born. A scientific platform which is …
Claudio Martella talks @ FOSDEM about Apache Giraph: Distributed Graph Processing in the Cloud
Claudio Martella introduces Apache Giraph which according to him is a loose implementation of Google Pregel which was introduced on SIGMOD in 2010. He points out that Map Reduce cannot be used to do graph processing. He then gave an example on how MapReduce can be used to to do page rank calculation. He points out that Pagerank can be calculated …