Some embodiments provide customer partiality vectorization refinement systems, comprising: a customer database storing a set of multiple customer partiality vectors for each of multiple different customers; a product database storing a set of multiple product partiality vectors for each of multiple different products; and a vectorized refinement control circuit configured to: identify, for a first customer, a multi-dimensional partiality vector target area defined by a limited range of partiality magnitudes and limited range of representative partiality directions; select a first product having at least a product partiality vector that is within a threshold alignment with the partiality vector target area, and cause the first product to be presented to the first customer; receive feedback associated with the first customer and corresponding to the first product; and adjust the partiality vector target area based on the feedback.