Research preview

Sony’s launch of a $5,900 gold‑plated Walkman that uses artificial intelligence to “enhance” music quality may seem like a novelty, but the underlying technology mirrors the same statistical challenges that quantitative traders face when they flood their models with hundreds or thousands of predictors. The episode offers a vivid, tangible way to discuss over‑parameterisation, regularisation, and the need for debiased inference in modern systematic strategies. The Parallel Between Audio Enhancement and Return Prediction Both audio enhancement and return forecasting start from a raw signal—sound waves or price histories—and attempt to improve it by adding information....