Collaborative Filtering Is Usually Done by Building a User-Item Ratings

question 31

Short Answer

Collaborative filtering is usually done by building a user-item ratings matrix where each row represents a unique user and each column gives the individual item rating made by the user. The resultant matrix is a dynamic, sparse matrix with a huge ________.

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Definitions:

Innovation

The act of implementing novel concepts, techniques, or goods to enhance productivity, efficiency, or gain a competitive edge.

Compatibility

The degree to which two or more systems, processes, or entities can work together without conflict or alteration.

Diffusion

The process by which an innovation, idea, or trend spreads through a population or social system.

Innovation

The act of introducing something new, such as an idea, method, or device, intended to enhance efficiency, effectiveness, or pleasure.