Jeffrey Lin
@jeffrlin.bsky.social
Economist studying cities, regions, and growth. West Philly dad. Views are my own. https://jlin.org/
Some interesting ideas in this paper!
September 15, 2025 at 11:31 PM
Some interesting ideas in this paper!
To measure neighborhoods where FAIR plans were likely offered, we digitized city directories for 26 cities, documenting private property insurer's postwar exit from central neighborhoods. Using these data, we measure neighborhoods experiencing insurer withdrawal symmetrically across states. 7/
December 23, 2024 at 5:40 AM
To measure neighborhoods where FAIR plans were likely offered, we digitized city directories for 26 cities, documenting private property insurer's postwar exit from central neighborhoods. Using these data, we measure neighborhoods experiencing insurer withdrawal symmetrically across states. 7/
Some contemporary observers blamed FAIR for the 1970s wave of urban arsons, although others have blamed disinvestment in fire protection. 5/
December 23, 2024 at 5:40 AM
Some contemporary observers blamed FAIR for the 1970s wave of urban arsons, although others have blamed disinvestment in fire protection. 5/
New working paper on 1960s insurance policy and its effects on housing (dis-)investment and neighborhoods, with Ingrid Ellen, Dan Hartley, and Wei You.
jlin.org/papers/EHLY-...
jlin.org/papers/EHLY-...
December 21, 2024 at 1:52 PM
New working paper on 1960s insurance policy and its effects on housing (dis-)investment and neighborhoods, with Ingrid Ellen, Dan Hartley, and Wei You.
jlin.org/papers/EHLY-...
jlin.org/papers/EHLY-...
Tune in tomorrow morning to see Vitaly present our paper at the I3 meetings. www.nber.org/conferences/...
December 6, 2024 at 8:06 PM
Tune in tomorrow morning to see Vitaly present our paper at the I3 meetings. www.nber.org/conferences/...
Fascinating follow up to William Whyte’s Social Life of Small Urban Spaces by Salazar-Miranda et al. Using AI and historical and modern sidewalk video, compared with 1980, walking speeds up, lingering down, group encounters declined. www.nber.org/papers/w33185
November 25, 2024 at 8:55 PM
Fascinating follow up to William Whyte’s Social Life of Small Urban Spaces by Salazar-Miranda et al. Using AI and historical and modern sidewalk video, compared with 1980, walking speeds up, lingering down, group encounters declined. www.nber.org/papers/w33185
Description of Philadelphia in Hammond’s Pictorial Travel Atlas, 1955
November 22, 2024 at 7:08 PM
Description of Philadelphia in Hammond’s Pictorial Travel Atlas, 1955
And here’s a nontechnical companion piece with an analysis of burying the Delaware Expressway in Philadelphia: jlin.org/papers/BL-FD...
November 19, 2024 at 2:20 AM
And here’s a nontechnical companion piece with an analysis of burying the Delaware Expressway in Philadelphia: jlin.org/papers/BL-FD...
Ungated preprint: jlin.org/papers/BL-FR...
November 19, 2024 at 2:09 AM
Ungated preprint: jlin.org/papers/BL-FR...
We had the privilege of hosting the 16th Conference on Urban and Regional Economics (CURE) last week here in Philadelphia. Great presentations by some of the field’s most promising young researchers. Thanks to all who participated and helped to organize! custom.cvent.com/9A0657ED9B01...
November 13, 2024 at 2:17 AM
We had the privilege of hosting the 16th Conference on Urban and Regional Economics (CURE) last week here in Philadelphia. Great presentations by some of the field’s most promising young researchers. Thanks to all who participated and helped to organize! custom.cvent.com/9A0657ED9B01...
CFP: really nice small conference sponsored by CRED in Bern that I had the pleasure of participating in a couple years ago. Conference followed by an Alpine adventure! www.cred.unibe.ch/forschung/ev...
October 21, 2024 at 9:10 PM
CFP: really nice small conference sponsored by CRED in Bern that I had the pleasure of participating in a couple years ago. Conference followed by an Alpine adventure! www.cred.unibe.ch/forschung/ev...
Found a free streaming TV channel that airs only Conan O’Brien clips 24/7! Currently airing only Jeff Goldblum interviews, one after another.
October 8, 2024 at 12:07 AM
Found a free streaming TV channel that airs only Conan O’Brien clips 24/7! Currently airing only Jeff Goldblum interviews, one after another.
Q&A with my new colleague Allison Shertzer in the latest issue of Economic Insights. www.philadelphiafed.org/-/media/frbp...
October 1, 2024 at 1:20 PM
Q&A with my new colleague Allison Shertzer in the latest issue of Economic Insights. www.philadelphiafed.org/-/media/frbp...
Bryan Stuart has a review of the literature on gender gaps in the labor market in the latest issue of Economic Insights. www.philadelphiafed.org/-/media/frbp...
October 1, 2024 at 1:16 PM
Bryan Stuart has a review of the literature on gender gaps in the labor market in the latest issue of Economic Insights. www.philadelphiafed.org/-/media/frbp...
My colleague Jeff Brinkman on the increasing importance of amenities in regional dynamics. www.philadelphiafed.org/-/media/frbp...
October 1, 2024 at 1:14 PM
My colleague Jeff Brinkman on the increasing importance of amenities in regional dynamics. www.philadelphiafed.org/-/media/frbp...
Many of the best papers these days including exclamation points in their titles, you heard it here first
September 23, 2024 at 1:20 PM
Many of the best papers these days including exclamation points in their titles, you heard it here first
PhD students in real estate or urban economics: Submit to present at the AREUEA-ASSA poster session in San Francisco. Submission deadline November 1. #econsky
www.areuea.org/2025-areuea-...
www.areuea.org/2025-areuea-...
September 19, 2024 at 7:39 PM
PhD students in real estate or urban economics: Submit to present at the AREUEA-ASSA poster session in San Francisco. Submission deadline November 1. #econsky
www.areuea.org/2025-areuea-...
www.areuea.org/2025-areuea-...
Importantly, we show that selecting a single representation without proper validation can lead to ambiguous or even opposing trends. 10/
September 16, 2024 at 11:43 PM
Importantly, we show that selecting a single representation without proper validation can lead to ambiguous or even opposing trends. 10/
(I'm pretty proud of this graph showing long-run declines in interference rates, which required a finding, identifying, and digitizing patent interference records in the National Archives!) 9.5/
September 16, 2024 at 11:42 PM
(I'm pretty proud of this graph showing long-run declines in interference rates, which required a finding, identifying, and digitizing patent interference records in the National Archives!) 9.5/
Using our validated representations, we measure a secular decline in contemporaneous patent similarity over the past 150 years. This suggests inventors are spreading out over an expanding knowledge frontier - corroborated by declining rates of multiple invention we document! 9/
September 16, 2024 at 11:40 PM
Using our validated representations, we measure a secular decline in contemporaneous patent similarity over the past 150 years. This suggests inventors are spreading out over an expanding knowledge frontier - corroborated by declining rates of multiple invention we document! 9/
Second, Human Judgment task was super fun to design: We assess how well different NLP models align with non-expert human judgments about patent similarity. This task helps ensure our measures resonate with intuitive notions of similarity. Read paper to see how to make this work! 6/
September 16, 2024 at 11:39 PM
Second, Human Judgment task was super fun to design: We assess how well different NLP models align with non-expert human judgments about patent similarity. This task helps ensure our measures resonate with intuitive notions of similarity. Read paper to see how to make this work! 6/
First, Patent Interference validation task: We use historical patent interference (double invention!) cases as a "gold standard" for near-identical similarity. This task combines modern patent text with expert legal judgments on invention similarity. 5/
September 16, 2024 at 11:39 PM
First, Patent Interference validation task: We use historical patent interference (double invention!) cases as a "gold standard" for near-identical similarity. This task combines modern patent text with expert legal judgments on invention similarity. 5/