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Comparison of String Distance Algorithms
For the visualization of votings in the Bundestag I had to read in handwritten protocols of the sessions. These are unfortunately studded with typos, which is why I had to deal with different versions...
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Segmenting a Text Document using the Idea of a Cellular Automata
The German parliament publishes protocols for each of their sessions. A lot of data waiting to be processed. The protocols are published in the form of text files and PDFs. The published text files are...
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The tf-idf-Statistic For Keyword Extraction
The tf-idf-statistic (“term frequency – inverse document frequency”) is a common tool for the purpose of extracting keywords from a document by not just considering a single document but all documents...
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Using the Linux Shell for Web Scraping
Let’s assume we want to scrape the “Most Popular in News” box from bbc.com. What we need first is a CSS selector to locate what we are interested in. In this case it is simply a div tag with the ID...
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A Guide on OCR with tesseract 3.03
Tesseract is tough … so tough indeed, even Chuck Norris would have to check the manual twice. Not kidding you. Okay, so this article aimes at structuring what I needed to learn about tesseract to...
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