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David Africa

Karma: 1,522

Research Scientist with the Alignment team at UK AISI.

Thou­sand-di­men­sional structure

30 Jul 2026 14:04 UTC
86 points
2 comments10 min readLW link

Models don’t seem to be dishon­est in the way hu­mans are

22 Jul 2026 15:32 UTC
45 points
4 comments9 min readLW link

Elic­it­ing hid­den knowl­edge from mon­i­tors with NLAs

15 Jul 2026 13:51 UTC
27 points
0 comments9 min readLW link

Per­sona Car­tog­ra­phy: Chart­ing Lan­guage Model Per­son­al­ity Traits in Weight Space

10 Jul 2026 18:54 UTC
42 points
0 comments18 min readLW link
(arxiv.org)

Desider­ata for func­tional welfare ex­per­i­ments on LLMs

6 Jul 2026 12:34 UTC
30 points
1 comment15 min readLW link

When Role-play­ing, Do Models Believe What They Say?

2 Jul 2026 21:58 UTC
54 points
0 comments8 min readLW link

Con­sis­tency Train­ing while Miti­gat­ing Obfus­ca­tion via Rate Matching

1 Jul 2026 17:26 UTC
45 points
7 comments12 min readLW link

Your Model Or­ganisms Might Be Fried

18 Jun 2026 16:18 UTC
104 points
9 comments7 min readLW link

“Did you lie?” Eval­u­at­ing Lie De­tec­tors across Model Scale and Belief-Ver­ified Model Organisms

17 Jun 2026 18:43 UTC
34 points
0 comments6 min readLW link
(arxiv.org)

Sev­eral fron­tier mod­els are sub­stan­tially pre­fill aware

17 Jun 2026 17:41 UTC
61 points
2 comments5 min readLW link