Caleb Johnson

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Understanding interests expressed through user's search query is a task of critical importance for many internet applications. To help identify user interests, web engines commonly utilize classification of queries into one or more pre-defined interest categories. However, majority of the queries are noisy short texts, making accurate classification a(More)
How do average hours worked vary with income per capita? To answer this question, we build a new internationally comparable database of hours worked covering countries of all income levels. We document that average hours worked per adult are substantially higher in low-income countries than in high-income countries. This pattern is shaped by differences(More)
  • Simeon Alder, David Lagakos, Nber Lee Ohanian, Ufuk Akcigit, Marco Bassetto, Jesus Fernandez-Villaverde +23 others
  • 2015
No region of the United States fared worse over the postwar period than the " Rust Belt, " the heavy manufacturing region bordering the Great Lakes. This paper hypothesizes that the Rust Belt declined in large part due to a lack of competitive pressure in its labor and output markets. We formalize this thesis in a two-region dynamic general equilibrium(More)
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