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Articles by Cate Heine
Computer Science > Machine Learning
Low-rank adaptation (LoRA) fine-tuning has made it cheap and easy to customize open-weight image generation models for specific tasks, including the production of child sexual abuse material (CSAM). Existing moderation relies on metadata or generated outputs, but metadata can be deceptive and generating outputs may itself be unacceptable or illegal.
Data Slots: trade-offs between privacy concerns and benefits of data-driven solutions - Humanities and Social Sciences Communications
Abstract Cities are increasingly adopting data-driven solutions derived from diverse digital media interactions—from geolocated social media posts and self-tracking apps to CCTV surveillance and transit cards. We define a data-driven solution as an application, service, or device that leverages big data. However, concerns persist about the potential trade-off between the benefits of these solutions and individual privacy.
Author Correction: The 15-minute city quantified using human mobility data - Nature Human Behaviour
Correction to: Nature Human Behaviour https://doi.org/10.1038/s41562-023-01770-y, published online 5 February 2024. In the version of the article initially published, three citations were missing from the sixth paragraph and have now been added as references 24–26: Wang, Q., Phillips, N. E., Small, M. L. & Sampson, R. J. Urban mobility and neighborhood isolation in America’s 50 largest cities. Proc. Natl Acad. Sci. USA 115, 7735–7740 (2018); Xu, Y., Belyi, A., Santi, P. & Ratti, C.
The 15-minute city quantified using human mobility data - Nature Human Behaviour
Abstract Amid rising congestion and transport emissions, policymakers are embracing the ‘15-minute city’ model, which envisions neighbourhoods where basic needs can be met within a short walk from home. Prior research has primarily examined amenity access without exploring its relationship to behaviour.
The 15-Minute City Quantified Using Mobility Data
We are very grateful to Safegraph for granting us access to mobility data. We thank seminar participants at the UEA and the Mobility workshop at the Mansueto Institute for Urban Innovation for helpful discussions and comments.
New urban habits in Stockholm following COVID-19
Major findings from the PPGIS study In our results, we note that in Stockholm,2 44% of all reported places are places people still visit, with the most commonly given reason being access to services (shops, health care, restaurants). In addition, respondents indicated that they still visit areas associated with work or study, organised activity (football, work out classes, scouts), functions (playground, bus stop) or seclusion.
Analysis of mobility homophily in Stockholm based on social network data
Loading metrics Open Access Peer-reviewed Research Article Cate Heine , Cristina Marquez, Paolo Santi, Marcus Sundberg , Miriam Nordfors , Carlo Ratti Cate Heine, Cristina Marquez, Paolo Santi, Marcus Sundberg, Miriam Nordfors, Carlo Ratti Published: March 9, 2021 https://doi.org/10.1371/journal.pone.0247996 Figures Abstract We present a novel metric for measuring relative connection between parts of a city using geotagged Twitter data as a proxy for co-occurrence of city residents.
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