Policymaking · Hearings (GovInfo CHRG)

Hearings

What Congress actually talks about when homelessness comes up: the themes of congressional hearings, discovered by a transformer topic model, and how they shift over time.

What gets talked about?

Committee hearings are where Congress gathers testimony and frames a problem. We can't read all 2,800+ homelessness-related hearings by hand, so we let a model read the titles and group them into themes: which lets us see what draws attention (veterans, youth, mental health, funding) and how the mix changes.

The themes

Hearings grouped into themes, largest first. Hover a bar for the terms that define it.

Homelessness-related hearings by theme

How the conversation shifts

The same themes over time (2010-2025). Watch which concerns rise and fall.

Hearing themes by year

The rise of mental health

Mental health is one of the angles we track within the homelessness corpus. Below is the share of homelessness bills and hearings each year whose title raises mental-health terms: it climbs unevenly, with a notable spike around 2022.

Share of homelessness bills & hearings mentioning mental health, by year

What the titles miss

The trend above reads titles. As a check, we pulled the full transcripts for a sample of 100 hearings: mental health is named in almost no titles, yet it runs through most of the actual testimony.

🏷️ mention it in the title
📄 mention it in the full text

How we built this

1

Collect

  • Source: GovInfo CHRG (congressional hearings)
  • Homelessness-matched, 2010-2025 (~2,800 hearings)
2

Clean

  • Strip the "Hearing Before the Committee on ..." boilerplate to keep the subject
3

Embed & cluster

  • Sentence-transformer embeddings (all-MiniLM-L6-v2)
  • KMeans clustering into themes
4

Label

  • Top TF-IDF terms per cluster, named by an LLM
  • Aggregate theme mix + theme-by-year trend