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Asked: 2026-06-01T15:32:50+00:00

I’m a machine learning newbie trying to understand how Adaboost works. I’ve read many

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I’m a machine learning newbie trying to understand how Adaboost works.

I’ve read many articles explaining how Adaboost makes use of set of weak *classifiers* to create a strong classifier.

However, I seem to have problem understanding the statement that “Adaboost creates a Strong Classifier“.

When I looked at implementations of Adaboost, I’ve realized that it doesn’t “actually” create a Strong Classifier but somehow in the TESTING PHASE figures out on “how to use set of Weak Classifiers to get more accurate results” which in turn acts like a strong classifier “Collectively“.

So technically there is NO SINGLE STRONG CLASSIFIER created (but set of weak classifiers collectively act as a strong classifier).

Please correct me if I’m wrong. It would be nice if someone can throw in some comments regarding this.

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1 Answer

  1. Editorial Team

    A classifier is a black box that receives an input (feature vectors) and returns an output (labeled vectors). So to call something a classifier, you only care about what it does, and not how it does it. AdaBoost’s classifier can be seen as such black box, so it’s indeed a single classifier, even if it uses internally several weak classifiers to produce such output.

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