Product and search recommendations on websites typically use algorithms that show users only information that matches up with what they already think or what they have searched for in the past. This enforces something known as the:

Product and search recommendations on websites typically use algorithms that show users only information that matches up with what they already think or what they have searched for in the past. This enforces something known as the:

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None of the above are right

Social recommendation

This actually doesn$$t happen