Viewing profile — joshua_s_penman
joshua_s_penman
HN member- Joined
- Thu, Feb 13, 2025, 11:30 PM UTC
- HN karma
- 3
- Public activity
- 4 items
- HN profile
- View on Hacker News ↗
About joshua_s_penman
No profile information was provided.
Recent public activity
-
story
Show HN: Semantic Overlays – an NX bit for LLM prompt injection (live demo)
I've built a new method for steering LLMs called Semantic Overlays, small trained adapters on a frozen model which change how it perceives a piece of its context. The most readily …
-
comment
Comment #45067134
> interesting, so you think the issue with the above approach is the graph structure being too rigid / lossy (in terms of losing semantics)? Yeah, exactly. >And embeddings are also…
-
comment
Comment #45066582
this is fundamentally organized by popularity, though
-
comment
Comment #45066398
The thing is — for very long documents, it's actually pretty hard for humans to find things, even with a hierarchical structure. This is why we made indexes — the original indexes!…