{"blocks": [{"key": "12b97876", "text": "Scenario", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "4d90e013", "text": "Platform must decide how to serve three different ad categories to users in a personalized way.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "ad41e124", "text": "Question", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "57db655e", "text": "Design an approach to personalize the delivery of the three ad categories. How would you decide which ad to show, measure performance, and optimize for revenue/ROI?", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "2a1e0bf0", "text": "Hints", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "642daf3c", "text": "Define objectives, features, model choice, exploration vs. exploitation, offline/online metrics, causal inference for lift.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}], "entityMap": {}}