Social News Stream

René Pickhardt on July 23rd, 2014

Archived; click post to view. Excerpt: Long time I have been trying to educate people about social networks and marketing within social networking services. I thought I would not create an article about the topic in my blog again, but I just stumbled upon a really nice video summarizing a lot of my concerns from [...]

Continue reading about Why Facabook likes do not really matter

René Pickhardt on September 2nd, 2013

Archived; click post to view. Excerpt: 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 [...]

Continue reading about Graphity Server for social activity streams released (GPLv3)

René Pickhardt on July 17th, 2013

Archived; click post to view. Excerpt: Being at FOSDEM 20013 Peter from Neo4j asked my if I would like to get a neo4j shirt send to my home adress. We have to keep in mind that i just moved back to Koblenz from China. I did not only move to Koblenz but I moved to [...]

Continue reading about Drug junkie steals my neo4j t-shirt out of my physical mailbox

Archived; click post to view. Excerpt: Finally 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 [...]

Continue reading about Metalcon finally gets a redesign – Thinking about high scalability

Archived; click post to view. Excerpt: My graph index graphity was – as mentioned in another blogpost – accepted at socialcom 2012. After I explained how it works and sharted the source code I now want to share some information about the history of submissions, reviews, quality of reviews, taken actions and so on. So [...]

Continue reading about Submission history of my first academic research paper (graphity at socialcom 2012)

René Pickhardt on March 27th, 2012

Archived; click post to view. Excerpt: Over the last week we had our off campus meeting with a lot of communication training (very good and fruitful) as well as a special treatment for some PhD students called “massage your diss”. I was one of the lucky students who were able to discuss our research ideas [...]

Continue reading about PhD proposal on distributed graph data bases

Archived; click post to view. Excerpt: 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) [...]

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

René Pickhardt on November 2nd, 2011

Archived; click post to view. Excerpt: During the last month my blog was rather quite. I dicided that I was aiming to submit my first paper to a top conference with a deadline of november first. Well besides the fact that I almost forgot about the fact that I also have a private life – [...]

Continue reading about 11 lessons learnt after my first scientific paper was submitted

René Pickhardt on September 21st, 2011

Archived; click post to view. Excerpt: UPDATE: you can find an evaluation of the following blog post and idea on:  Hey everyone I can finally demonstrate the neo4j and gwt system that I have been blogging about over the last weeks here and here. But please find the demo under the following adress: [...]

Continue reading about neo4j based social news feed demo on wikipedia graph running

René Pickhardt on September 5th, 2011

Archived; click post to view. Excerpt: UPDATE: look at for a more scientific survey and evaluation of this data structure. Ok you guys did not hear much from me most recently. I was on vaccation and then on summer school and I worked on my first scientific poster and on a talk which will [...]

Continue reading about Data structure for Social news streams on Graph data bases


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