Jeffrey Lin
Federal Reserve Bank of Philadelphia
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As distorted maps may mislead, Natural Language Processing (NLP) models may misrepresent. How do we know which NLP model to trust? We provide comprehensive guidance for selecting and applying NLP representations of patent text. We develop novel validation tasks to evaluate several leading NLP models...
Does social distancing harm innovation? We estimate the effect of non-pharmaceutical interventions (NPIs)policies that restrict interactions in an attempt to slow the spread of diseaseon local invention. We construct a panel of issued patents and NPIs adopted by 50 large US cities during the 1918...
We examine portage sites in the U.S. South, Mid-Atlantic, and Midwest, including those on the fall line, a geomorphologic feature in the southeastern U.S. marking the final rapids on rivers before the ocean. Historically, waterborne transport of goods required portage around the falls at these...
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