Radek. I’m going to show you how to fish. When you call Mechanize::Page::parser, it’s giving you the Nokogiri document. So your “xpath” and “at_xpath” calls are invoking Nokogiri. The problem is in your xpaths. In general, start out with the most general xpath you can get to work, and then narrow it down. So, for … Read more
They likely use Information Extraction techniques for this. Here is a demo of Stanford’s SUTime tool: http://nlp.stanford.edu:8080/sutime/process You would extract attributes about n-grams (consecutive words) in a document: numberOfLetters numberOfSymbols length previousWord nextWord nextWordNumberOfSymbols … And then use a classification algorithm, and feed it positive and negative examples: Observation nLetters nSymbols length prevWord nextWord isPartOfDate … Read more