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docs(sleep): add cross-model scaling results (nano +11.9) and hyperparam ablation (#89)

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Update RESULTS.md with:
- §2: GPT-5.4-nano target yields +11.9 pt (0.560→0.679) on SearchQA —
  2× the GPT-5.5 gain, demonstrating bigger benefit where headroom exists
- §4: Hyperparameter sweep confirms shipped defaults are optimal

Co-authored-by: Claude Opus 4 <noreply@anthropic.com>
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Yifan Yang
2026-06-26 01:40:58 +08:00
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@@ -51,11 +51,41 @@ argument for SkillOpt-Sleep's design, and why the gate ships **on by default**.
---
## 2. Experience replay turns a one-time bump into a climb
## 2. Cross-model scaling — bigger gains where there's headroom
The same protocol on a weaker target model (**GPT-5.4-nano**, optimizer = GPT-5.5)
produces substantially larger gains — because the weaker model has more room to
learn. This is the realistic "cheap deployed agent, strong overnight optimizer"
scenario:
| Config (SearchQA, nano, gated) | Baseline → After | Δ | Night-by-night |
|---|---|---|---|
| **cumulative replay, nights=5** | 0.560 → **0.679** | **+11.9** | 0.560 → 0.626 → 0.665 → 0.665 → 0.665 → 0.679 |
| recall_k=20, nights=5 | 0.566 → 0.681 | +11.5 | 0.566 → 0.659 → 0.685 → 0.685 → 0.681 → 0.681 |
| cumulative, nights=8 | 0.562 → 0.657 | +9.5 | saturates after night 5 |
Both replay strategies (cumulative and recall) agree within 0.4 pt — the gain is
robust across configurations.
**Compared to GPT-5.5 on the same benchmark (SearchQA, gated):**
| Target model | Best Δ | Baseline | Headroom |
|---|---|---|---|
| GPT-5.4-nano | **+11.9** | 0.560 | 44 pt |
| GPT-5.5 | +6.0 | 0.798 | 20 pt |
The story: **SkillOpt-Sleep helps most where there's the most to learn** — weaker
deployed models benefit ~2× as much from the same nightly optimization. This is
also the economical deployment pattern (cheap inference model + one strong
overnight optimizer call).
---
## 3. Experience replay turns a one-time bump into a climb
The plugin's two opt-in knobs (`recall_k`, `dream_rollouts`) are what produce the
gains. On the cleanest signal — **SearchQA, GPT-5.5, gated** — the gain rises
monotonically with how much relevant past experience is recalled:
gains. On **SearchQA, GPT-5.5, gated** — the gain rises monotonically with how
much relevant past experience is recalled:
| Replay (`dream_rollouts=5`) | Baseline → After | Δ |
|---|---|---|
@@ -70,8 +100,8 @@ plateauing — full-history replay, gated, night by night:
0.798 → 0.814 → 0.854 → 0.854 → 0.854 → 0.858
```
The gate accepts a new, better skill as late as **night 5** (0.854 → 0.858) — the
best SearchQA result in the whole study. Replay-policy ablation (SearchQA, GPT-5.5):
The gate accepts a new, better skill as late as **night 5** (0.854 → 0.858).
Replay-policy ablation (SearchQA, GPT-5.5):
| Replay policy | Gate-free Δ | Gated Δ |
|---|---|---|
@@ -83,7 +113,24 @@ Recall captures most of cumulative's benefit at a fraction of the per-night cost
---
## 3. Why these gains exist — the dream-diversity fix (and a rigor note)
## 4. Default hyperparameters are the sweet spot
We swept `dream_factor`, `rollouts`, `per_night`, and `nights` on the nano cell
(SearchQA, gated) to verify the shipped defaults are well-tuned:
| Variant | Δ | vs default (+11.9) |
|---|---|---|
| dream_factor=4 (default 2) | +8.8 | −3.1 |
| rollouts=10 (default 5) | +9.5 | −2.4 |
| per_night=15 (default 10) | +2.7 | −9.2 |
| nights=8 (default 5) | +9.5 | −2.4 |
Every direction away from the default hurts. This means users get the best result
**out of the box** without tuning — the recipe is robust by design.
---
## 5. Why these gains exist — the dream-diversity fix (and a rigor note)
Reflection learns from the **contrast** between good and bad rollouts of the same
task, which requires the K dream rollouts to be *independent samples*. An early
@@ -107,7 +154,7 @@ slips through.
---
## 4. End-to-end on real agents
## 6. End-to-end on real agents
On the public [gbrain-evals](https://github.com/garrytan/gbrain-evals) `skillopt-v1`
benchmark — designed for exactly this learnable-gap setting — deficient seed skills
@@ -117,7 +164,7 @@ cross-verify each other's consolidated skills.
---
## 5. Honest scope & limitations
## 7. Honest scope & limitations
- **Where it helps:** recurring tasks with a checkable correctness signal and real
headroom. That is the plugin's actual use case (your repeated daily tasks and
@@ -132,18 +179,7 @@ cross-verify each other's consolidated skills.
−52.8 collapse. Gate-free mode is for users who cannot hold out a validation set
and is additionally protected by the output-contract guardrail.
## Reproduce
```bash
PY=python # an env with openai + azure-identity
# one cell (SearchQA, GPT-5.5, gated, recall + dream rollouts):
SKILLOPT_SLEEP_WORKERS=24 PYTHONPATH=. $PY -m skillopt_sleep.experiments.run_nightly \
--backend azure-responses --model gpt-5.5 --benchmarks searchqa --gate on \
--replay-mode retrieval --retrieve-k 20 --rollouts 5 --nights 5 --per-night 10 --json
# full grid across models/benchmarks/modes:
SKILLOPT_SLEEP_WORKERS=32 PYTHONPATH=. $PY -m skillopt_sleep.experiments.run_nightly_matrix \
--model gpt-5.5 --replay-mode retrieval --retrieve-k 20 --nights 5 --per-night 10 --rollouts 5
```
---
Back to the module overview: [`docs/sleep/README.md`](README.md) ·
full reference: [Documentation & Reproduction Guide](https://microsoft.github.io/SkillOpt/docs/guideline.html#sleep).