Bluestreak — Privacy-Aware User Segmentation for Online Advertisement Using Logistic Regression
A TypeScript/JavaScript library and server-side component that shifts age- and gender-segment prediction into the user’s browser, ensuring all sensitive data remains on-device and on ly anonymous segment labels are sent back to the ad server. By training an L1-regularized logistic regression model on a real-world RTB dataset, Bluestreak improves age-segment accura cy by 4 pp and gender accuracy by 2 pp over a User-Agent-based baseline, without relying on cookies or fingerprinting and adding minimal load-time and resource overhead. Fully GDPR-co mpliant and compatible with >95 % of modern browsers, it delivers privacy by design while preserving ad-targeting precision.
Mar 1, 2021
