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An arXiv paper presenting a longitudinal analysis of the dark web cybercrime ecosystem. The authors analyze 25,065 websites using 11,403,638 HTML snapshots collected over six years, applying a topic-modeling framework with domain-specific embeddings, density-based clustering and temporal aggregation. The analysis identifies 55 thematic clusters and measures topic prevalence and lifecycle at the website level.
An arXiv paper presenting a large-scale analysis of the Tor network using a crawler called Mimir, which collects and visits linked content. The authors report a dataset of pages from more than 25k sites and examine network topology, replicated content and content types.
The Research Data Centre (FDZ-DZA) of the German Centre of Gerontology provides access to data from the German Ageing Survey (DEAS), a longitudinal study of individuals aged 40 and above, and from Old Age in Germany (D80+), a cross-sectional survey of individuals aged 80 and above. Data are available as Scientific Use Files upon completion of a usage agreement.
The National Center for Education Statistics is the federal statistical agency that collects, analyzes and reports data on the condition of U.S. education, from early childhood to adult education. It publishes indicators and reports on education developments and trends, and conducts surveys and programs including the Common Core of Data and the Early Childhood Longitudinal Study.
The National Educational Panel Study (NEPS, German: Nationales Bildungspanel) is a German educational research project that provides longitudinal educational data across multiple life stages including newborns, kindergarten children, school students, and adults. It also offers data access tools, documentation, research publications, and user support resources for researchers.
