Twitter Mood Predicts Stock Market Movement

Download: mood_dataset.zip In this post, I try to predict the daily up and down movement of stock prices using twitter mood data and machine learning algorithms. Some time ago, I read a paper called “Twitter mood predicts the stock market.” They claimed to be able to predict stock price movement with an accuracy of over 86%. They used 9,853,498...

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Experiments with Real-time Linux

After installing real-time linux on both my Ubuntu laptops, my goal was to get a feel for how well latency peaks are eliminated compared to the standard Linux kernel. I was specificaly interested in network port latencies. Before looking at the network specific latenicies, I experimented with the internal worst-case interrupt latency of the kernel....

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Real-time Linux

I installed the RT Linux kernel on both of my Ubuntu laptops recently and I am happy to report that thus far I have not noticed any negative side-effects. The RT patch seems to be stable -- video, sound, networking etc. continue to work as before. My intention is to experiment with the RT kernel. In what way is the network latency affected ? Is the...

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Clustering Through Decision Tree Construction

Download: https://github.com/dimitrs/CLTree As is often the case, any idea you may have, no matter how novel you may think it is, has already been thought of by someone else. Some time ago I wanted to modify a decision tree induction algorithm for clustering. I thought that this could be a new method for clustering, but fortunately after an...

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Use WEKA in your Python code

Weka is a collection of machine learning algorithms that can either be applied directly to a dataset or called from your own Java code. There is an article called “Use WEKA in your Java code” which as its title suggests explains how to use WEKA from your Java code. This is not a surprising thing to do since Weka is implemented in Java. As the title...

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Encode and Decode Video from Memory

Download: https://github.com/dimitrs/video_coding OpenCV provides a very simple api to connect to a camera and show the images in a window. It is also very simple to encode those images and store them on disk. However, the simple api provides no means by which to encode an image without storing it on disk and even worse, no means to decode an...

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How-to embed HTML in a ReStructuredText PDF document

Download: rst2pdf_html.tar.gz  I use rst2pdf to create PDF documents from reStructuredtext and on occasion, I have needed to embed HTML in those documents. Unfortunately, this is not possible with rst2pdf as it does not support html embedding. However, with this version of rst2pdf you can embed html as I have done in the example below. The...

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