Seed mccall_risk — gap-fill to 145/145 (closes #258) - #264
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Delivers lectures/mccall_risk.md, lost to the rebase force-push auto-close of #242 on 2026-08-07 (mechanism: QuantEcon/action-translation#280), bringing coverage to 145/145 against lecture-python.myst. Generated with translate init -f at the current engine main (e6e9176, claude-sonnet-5, glossary zh-cn 357 terms) rather than recreated from #242's stale branch. Hand steps after init: _toc.yml entry added in the source's position (after mccall_fitted_vfi) without taking init's ToC copy; FONTPATH corrected from _fonts/ to fonts/; the 99 clobbered non-md files restored. Verified: 22/22 directives, 13/13 code cells, 31/31 headings against source; all 13 cells parse; all captions and axis labels localised (the four identical strings are pure maths); no usetex; i18n font block present. See #258 and QuantEcon/project-translation#41.
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Pull request overview
Adds the missing “工作搜寻 V：风险敏感型偏好” lecture to restore parity with the upstream lecture set (closing the final content gap) and wires it into the book build/translation tracking.
Changes:
- Adds new lecture
lectures/mccall_risk.md(translated MyST/Jupytext notebook) including figures, exercises, and JAX/QuantEcon code cells. - Registers the lecture in
lectures/_toc.ymlso it appears in the McCall/job-search sequence. - Adds translation state metadata
.translate/state/mccall_risk.md.ymlfor sync provenance.
Reviewed changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.
| File | Description |
|---|---|
| lectures/mccall_risk.md | New translated lecture content, including code cells and exercises. |
| lectures/_toc.yml | Adds the new lecture to the table of contents ordering. |
| .translate/state/mccall_risk.md.yml | Records translation sync metadata for the new lecture. |
Suppressed comments (3)
lectures/mccall_risk.md:451
- 该最大化问题的两项仍写成了
$u(w)$ /$u(c)$ ，但代码实现采用线性流量收益（直接使用 w_grid 与 c）。建议把这两行改成与实现一致的形式，或补充效用函数定义并在代码中使用。
\frac{1}{1-\beta(1-\alpha)} \cdot (u(w) + \alpha\beta(P_\theta v_u)(w)),
u(c) + \beta(P_\theta v_u)(w)
lectures/mccall_risk.md:457
- 最优接受规则这里仍引用了
$u(c)$ ，但实现里比较的是accept >= reject，其中reject = c + β(P_θ v)(w)。建议同步更新文字表述以匹配实现，避免与前面的公式/代码不一致。
然后计算最优策略：若 $v_e(w) ≥ u(c) + β(P_\theta v_u)(w)$，则接受该工资。
lectures/mccall_risk.md:703
- 这里的“稳态满足”第二条使用了
$(1 - F(w^*))$ 的形式，但本讲的工资报价是马尔可夫过程（依赖当前工资状态），因此该表达式不再是一般成立的到达率/找到工作速率。建议将该条改为更一般的描述，避免给出可能不正确的解析形式。
稳态满足：
- 就业工人以速率 α 失去工作
- 失业工人以速率 (1 - F(w*)) 找到可以接受的工作
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| $$ | ||
| v_e(w) = | ||
| \frac{1}{1-\beta(1-\alpha)} \cdot (u(w) + \alpha\beta(P_\theta v_u)(w)) | ||
| $$ |
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| # 使用 vmap 对 θ_grid 进行向量化 | ||
| compute_res_wages_vec = jax.vmap(compute_res_wage_for_theta) | ||
| reservation_wages = compute_res_wages_vec(θ_grid) |
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| # 使用 vmap 对 θ_grid 进行向量化 | ||
| compute_u_rates_vec = jax.vmap(compute_u_rate_for_theta) | ||
| unemployment_rates = compute_u_rates_vec(θ_grid) |
This was referenced Aug 21, 2026
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Gap-fills
lectures/mccall_risk.md(工作搜寻 V：风险敏感型偏好), the last missing lecture against lecture-python.myst — coverage goes to 145/145. It was delivered by #242 and lost when the rebase automation's force-push auto-closed that PR on 2026-08-07 (mechanism filed as QuantEcon/action-translation#280); see #258 for how it went unnoticed.How it was produced.
translate init -f mccall_risk.mdat the engine's currentmain(e6e9176, claude-sonnet-5, 357-term zh-cn glossary) — a fresh translation rather than a recreate from #242's branch, which is 37+ behind and would re-deliver a stale snapshot of five other lectures. Passed the structural-parity guard on the first attempt.Hand steps after init, per the seed procedure: the
_toc.ymlentry added by hand in the source's position (aftermccall_fitted_vfi), never taking init's ToC copy (it reverts the localised part captions — QuantEcon/action-translation#254);FONTPATHcorrected from the engine's hard-coded_fonts/to this edition'sfonts/(the gotcha that failed the strict cache build onlearning_approximation); the 99 clobbered non-md files restored.Verified against source: 22/22 directives, 13/13 code cells, 31/31 headings, 24/24 display-math blocks; every code cell parses; all three figure captions and every axis label, title and legend entry are localised (the only byte-identical strings are pure maths such as
$\theta$); nousetex; i18n font block present; the one{doc}link resolves; no citations.Note for the reviewer: the preview tolerates
CellExecutionErroras a warning, so a green preview is not execution verification — the cache build after merge is the real gate. Part of QuantEcon/project-translation#41.