Google Research·· 2026-03-12
Introducing Groundsource: Turning news reports into data with Gemini
Introducing Groundsource: Turning news reports into data with Gemini
AI summary
Google Research launched Groundsource, using Gemini to extract structured historical disaster data from global news. Its first open dataset contains 2.6 million urban flash-flood records across over 150 countries, spanning 2000 to the present.
Selection record
Threshold 60Official, first-handFirst 62Second 62
AdmittedSum of both 124 ≥ twice the threshold 120
- Source tier
- Official, first-hand; this tier's threshold is 60
- Pre-filter
- passed：Gemini大模型提取新闻数据，AI技术应用
- Why it was chosen
- Extraction accuracy and coverage comparisons demonstrate how LLMs can construct historical disaster datasets from news.
A model scores each item twice, independently, against one written standard, out of 100. An item is admitted only when the two scores add up to twice the threshold. The threshold is set per source tier.
Source: Google Research · research.google