Archived; click post to view. Excerpt: Today I started an experiment I created an excercise for coursework in algorithms and data structures that is very unusuale and many people have been criticle if this was a good idea. The idea behind the exercise is that studens should read wikipedia articles to topics related to lectures [...]
Continue reading about Algorithms exercise: Find mistakes in Wikipedia articles
Archived; click post to view. Excerpt: I created some exercises regarding binary search trees. This time there is no coding involved. My experience from teaching former classes is that many people have a hard time understanding why trees are usefull and what the dangers of these trees is. Therefor I have created some straight forward [...]
Archived; click post to view. Excerpt: I already said that my first research results have been submitted to SIGMOD conference to the social networks and graph databases track. Time to sum up the results and blog about them. you can find a demo of the system here I created a data model to make retrieval [...]
Archived; click post to view. Excerpt: #1: Sorting huge files Sorting big files might not be as simple as just implementing an sort algorithm. As soon as the file does not fit in memory any more smarter implementations have to be applied. One way is to sort the file on the hard disk. We remark [...]
Archived; click post to view. Excerpt: 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 [...]
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
Archived; click post to view. Excerpt: 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 [...]
Continue reading about neo4j based social news feed demo on wikipedia graph running
Archived; click post to view. Excerpt: Over the weekend I met some students studying linguistics. Methods from Linguistics are very important for text retrieval and data mining. That is why in my oppinion Linguistics is also a very important part of web science. I am always concerned that most people doing web science actually are [...]
Archived; click post to view. Excerpt: 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 [...]
Continue reading about Data structure for Social news streams on Graph data bases
Archived; click post to view. Excerpt: So today I’ll start my research about the 57 signals Google uses to personalize search results. To verify that Google uses your Location to tailor search results was an easy score. After the experiment we can be 100% certain that your location is one of the 57 signals. Well [...]
Continue reading about Google uses your Location to personalize search results
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