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Local economic effects of connecting to China’s high-speed rail network: Evidence from spatial econometric models
https://d.repec.org/n?u=RePEc:wai:econwp:24/03&r=&r=big
Published: June 5, 2024 00:00
China’s high-speed rail (HSR) has quickly expanded to over 40, 000 km of lines operating and another 10, 000 km under construction. This is over 10-times longer than the networks in long-established HSR countries like France, Germany or Japan. While…
Should We Augment Large Covariance Matrix Estimation with Auxiliary Network Information?
http://d.repec.org/n?u=RePEc:cam:camjip:2416&r=&r=big
Published: May 20, 2024 00:00
In this paper, we propose two novel frameworks to incorporate auxiliary information about connectivity among entities (i.e., network information) into the estimation of large covariance matrices. The current literature either completely ignores this kind…
Sharp-SSL: Selective high-dimensional axis-aligned random projections for semi-supervised learning
https://d.repec.org/n?u=RePEc:ehl:lserod:122552&r=&r=big
Published: May 20, 2024 00:00
We propose a new method for high-dimensional semi-supervised learning problems based on the careful aggregation of the results of a low-dimensional procedure applied to many axis-aligned random projections of the data. Our primary goal is to identify…
Occupational reallocation and mismatch in the wake of the Covid-19 pandemic: Cross-country evidence from an online job site
http://d.repec.org/n?u=RePEc:oec:ecoaac:35-en&r=&r=big
Published: May 17, 2024 00:00
Employment has recovered strongly from the COVID-19 pandemic despite large structural changes in labour markets, such as the widespread adoption of digital business models and remote work. We analyse whether the pandemic has been associated with labour…
Nowcasting the growth rate of the ICT sector
http://d.repec.org/n?u=RePEc:oec:stiaab:362-en&r=&r=big
Published: May 14, 2024 00:00
This paper details the methodology used to nowcast the growth rate of the information and communication technology (ICT) sector in the "The growth outlook of the ICT sector" chapter of the OECD Digital Economy Outlook 2024, Volume 1. In an era of rapid…