The document discusses advanced analytics at Macys.com. It outlines the challenges of big data predictive modeling such as scaling models, ensuring timely models, integrating models, and testing models. It describes Macys.com's advanced analytics team which includes data scientists with backgrounds in quantitative fields. The team works on projects such as personalized site recommendations, response propensity models, customer acquisition/retention modeling, and experimentation platforms. It provides examples of Macys.com's real-time site personalization and customer segmentation work.