Criticism is negative feedback indicating that a search result or recommendation was unsatisfactory or irrelevant. Search systems can capture it through explicit actions such as thumbs-down votes, removals, returns, or negative reviews, and implicit behavior such as skipping a displayed document. section 8.4
A weighted ranking model incorporates criticism by assigning negative values to dissatisfaction signals. The resulting score combines positive and negative evidence, while domain-specific weights determine how strongly each action changes ranking. section 8.4
Typical criticism signals include:
- Skipping a result after seeing it. section 8.4
- Removing a product from the cart. section 8.4
- Returning a purchased item or posting a negative review. section 8.4
positive_signals = (1 * sum(click_signals)) +
(25 * (purchase_signals)) +
(10 * sum(add_to_cart_signals)) +
(0.025 * sum(seen_doc_signals))
negative_signals = (-0.025 * sum(skipped_doc_signals)) +
(-20 * sum(remove_from_cart_signals)) +
(-100 * sum(returned_item_signals)) +
(-50 * sum(negative_post_about_item_in_review_signals))
type_based_signal_weight = positive_signals + negative_signals
Shows a configurable aggregation in which clicks, purchases, cart additions, skips, removals, returns, and negative reviews receive separate weights. section 8.4
