uncleflo
Registered since September 28th, 2017
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Weighting words using Tf-Idf - NLP-FOR-HACKERS
Saved by uncleflo on December 23rd, 2018.
If I ask you “Do you remember the article about electrons in NY Times?” there’s a better chance you will remember it than if I asked you “Do you remember the article about electrons in the Physics books?”. Here’s why: an article about electrons in NY Times is far less common than in a collection of physics books. It is less likely to stumble upon the “electron” concept in NY Times than in a physics book. Let’s consider now the scenario of a single article. Suppose you read an article and you’re asked to rank the concepts found in the article by importance. The chances are you’ll basically order the concepts by frequency. The reason is simply that important stuff would be mentioned repeatedly because the narrative gravitates around them. Combining the 2 insights, given a term, a document and a collection of documents we can loosely say that:importance ~ appearances(term, document) / count(documents containing term in collection).
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A simple object classifier with Bag-of-Words using OpenCV 2.3 [w/ code] | More Than Technical
Saved by uncleflo on August 25th, 2012.
Just wanted to share of some code I’ve been writing. So I wanted to create a food classifier, for a cool project down in the Media Lab called FoodCam. It’s basically a camera that people put free food under, and they can send an email alert to the entire building to come eat (by pushing a huge button marked “Dinner Bell”). Really a cool thing. OK let’s get down to business. I followed a very simple technique described in this paper. I know, you say, “A Paper? Really? I’m not gonna read that technical boring stuff, give the bottom line! man.. geez.” Well, you are right, except that this paper IS the bottom line, it’s dead simple. It’s almost a tutorial. It is also referenced by the OpenCV documentation.
bagofwords opencv object classifier image analysis tutorial documentation solution howto development
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