UPDATE: you can find an evaluation of the following blog post and idea on: http://www.rene-pickhardt.de/graphity-an-efficient-graph-model-for-retrieving-the-top-k-news-feeds-for-users-in-social-networks/ 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: http://gwt.metalcon.de/GWT-Modelling The code will be available soon! …
Tag: PhD
Data structure for Social news streams on Graph data bases
UPDATE: look at http://www.rene-pickhardt.de/graphity 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 hopefully ontribute to my PhD thesis. …
Social news streams and time indices on graphs for social networks
Last week I had a meeting with my PhD advisor and we talked about my ideas on social news streams and how you could implement them using graph data bases. Of course my choise here would be neo4j. Yesterday I had my first talk in our “Oberseminar” which is a weekly meeting of all PhD …
How to create animations between two vector graphics?
I am just about to prepare a talk about my current research on social news streams for social networks. As I have learned giving good examples is essential! That is why I already spent a whole day learning some basic inkscape to create some vector graphics which are supposed to visualize some of my research …
Time lines and news streams: Neo4j is 377 times faster than MySQL
Over the last weeks I did some more work on neo4j. And I am ready to present some more results on the speed (In my use case neo4j outperformed MySQL by a factor of 377 ! That is more than two magnitudes). As known one part of my PhD thesis is to create a social newsstream …
Will Wikipedia replace scientific journals?
We all know that the review process of scientific journals is a good thing that served a certain purpose in the time it was created. In this video Jimmy Wales – well known as the Wikipedia founder – talks about the impact of new technologies and the web on the traditional concept of scientific journals …
Why open source wins
Ok this article is overdue! Open source is the way to go. I could now give an almost infinitly long list of reasons and examples where and why open source is winning. But instead I want to give you just an experience from my last two weeks. Before I start let me mention this: In …
how to combine Neo4j with GWT and Eclipse
As stated before I did my first testings with Neo4j. Now I wanted to include Neo4j to GWT which is actually very straight forward but for some reasons I was fighting with it for quite a while. I even had to emberass myself by asking stupid questions on the neo4j mailinglist to which Peter and …
Analysing user behaviour in internet communities
Yesterday Julia Preusse – who started her PhD studies at WeST just a month before I did – had a talk about her research interests. She is interested in communities and the behaviour of users in discussions. I thought she was having some interesting ideas. That is why I asked her for a meeting today. …
Neo4j Graph Database vs MySQL
For my social news stream application I am heavily thinking about the right software to support my backend. After I designed a database model in MySQL I talked back to Jonas and he suggested to search for a better suiting technology. A little bit of research brought me to a Graph database called Neo4j. After …