Is collaborative filtering considered machine learning?
Machine learning is a broad concept, so it could be twisted to fit many techniques. Collaborative filtering is more concrete: it refers to a specific procedure (albeit with many approaches) through which you use the behavior of other users to be able to recommend to one specific user.
Now, the “machine” part is clear, so collaborative filtering would qualify if it could also fit the “learning” part: does a CF engine learn? (i.e. does it improve over time as it gathers more data?). Usually, it does: if we are able to feed more behavioral data to the engine, the results are typically (though not always) more accurate, since most CF algorithms are able to improve their performance with additional data (in terms of accuracy, setting scalability issues aside, and discarding for simplicity problems associated with noise in data, saturation, etc). This is typically a landmark of machine learning: more data, more learning, better results.
One possible reason why CF is not more clearly positioned as machine learning is that its allocation to a machine learning category is imprecise. It may be supervised learning or unsupervised learning, depending on the algorithm or the data type. When supervised, it could be a regression or a classification, depending on the output. It could even be reinforcement learning. So it does not fit neatly into one single ML category.
Free Pre-Assessment Request
Do you want to know how your competitors are doing business?
Tell us a little about yourself below to gain data for free
WYgroup BI uses the information you provide to us to contact you about our relevant content, products, and services . You can unsubscribe from communications from HubSpot at any time. For more information, check out WYgroup’s Privacy Notice.
By continuing to browse or by clicking "Accept", you agree to the storing of first and third-party cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts. I AcceptCookie Notice