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used to build user profiles and infer preferences. We quantify the extent to which Facebook can track web behavior outside … of their own platform. The network of engagement buttons, placed on third-party websites, lets Facebook follow users as … they browse the web. Tracking users outside its core platform enables Facebook to build shadow profiles. For a …
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Computational methods to gauge investor sentiment from commonly used online data sources that rely on machine learning classifiers and lexicons have shown considerable promise, but suffer from measurement and classification errors. In our work, we develop a simple, direct and unambiguous...
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