Relevance Feedback (RF) in CBIR consists to select iteratively the returned (from image retrieval process) positive and negative images according to the image user query, until the the retrieved images are improved.

The attached a CBIR with RF source code  written in MATLAB, i would like firstly understand How they do the Relevance feedback,how the compute relevance score, correct the errors to use the code in my context?

Thank you a lot for your help.

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