🌐 [translation-sync] [house_auction] Add VCG comparison section and exercises

[mmcky]

Automated Translation Sync

This PR contains automated translations from QuantEcon/lecture-python.myst.

Source PR

#1068 - [house_auction] Add VCG comparison section and exercises

Files Updated

• ✏️ lectures/house_auction.md
• ✏️ .translate/state/house_auction.md.yml
• ✏️ lectures/_static/quant-econ.bib

⚠️ Target-Only Sections Removed

The following sections exist in the current translation but have no counterpart in the source document, so this sync removes them (the translation mirrors the source's structure). If the source deleted these sections, this removal is correct — merge as usual. If they are human-authored additions you want to keep, move them into a target-only file before merging (see adding content to a translated edition).

• lectures/house_auction.md: 分配的等价性

Details

• Source Language: en
• Target Language: zh-cn
• Model: claude-sonnet-5

---

This PR was created automatically by the translation action.

[netlify]

✅ Deploy Preview for astonishing-narwhal-a8fc64 ready!

Name	Link
🔨 Latest commit	3ef50b5
🔍 Latest deploy log	https://app.netlify.com/projects/astonishing-narwhal-a8fc64/deploys/6ab8aab5b5d4da0008422cf2
😎 Deploy Preview	https://deploy-preview-283--astonishing-narwhal-a8fc64.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify project configuration.

[github-actions]

✅ Translation Quality Review

Verdict: PASS | Model: claude-sonnet-5 | Date: 2026-09-27
Routing: editor — 1 major finding(s); 1 minor finding(s) in gating categories (accuracy/terminology/syntax/diff-check/other); accuracy 8 below floor 9; terminology 8 below floor 9
Shadow gate: would NOT auto-merge (recorded only; no action taken)

---

📝 Translation Quality

Criterion	Score
Accuracy	8/10
Fluency	8/10
Terminology	8/10
Formatting	8/10
Overall	8/10

Summary: The translation of the changed sections is accurate, fluent, and terminologically consistent overall, with math, code, and MyST directive syntax well preserved. One notable issue is a likely swapped argument order in the translated GC_Mechanism print statement that could alter the printed output semantics. A few minor bullet-list nesting inconsistencies were found but do not affect comprehension or build integrity. No critical markdown/MyST syntax errors were detected. Highly consistent and accurate rendering of technical auction and VCG mechanism terminology throughout the newly added sections Code blocks, LaTeX equations, and MyST directives (exercise/solution blocks, cite roles) are preserved correctly with proper syntax New sections (Comparing the two mechanisms, Is the greedy mechanism a VCG mechanism?, Exercises) read fluently and maintain the academic register of the source

Suggestions:

• [major · accuracy] lectures/house_auction.md — GC_Mechanism class, start method log string: The translated print string swaps the price and buyer index arguments compared to the original code: English is "House %i is sold to buyer %i at price %i"%(i[0], j[0], self.p[i[0]]) (order: house, buyer, price), but the translation uses "房屋%i以价格%i卖给了买家%i"%(i[0], self.p[i[0]], j[0]) (order: house, price, buyer). While the substitution order in the code itself is unchanged in position, the prin… → Use "房屋%i以价格%i卖给了买家%i"%(i[0], self.p[i[0]], j[0]) only if the surrounding code snippet order is verified; otherwise keep format string as "房屋%i以价格%i卖给了买家%i"%(i[0], j[0], self.p[i[0]]) is wrong — restore original code order: "House %i is sold to buyer %i at price %i"%(i[0], j[0], self.p[i[0]]).
• [minor · fluency] lectures/house_auction.md — ## Ascending bids auction for multiple goods: The list item "house $i$ is retained by the auctioneer if no prospective buyer offers more than $r_i$ for the house" was translated without the leading dash/bullet spacing consistent with adjacent bullets (uses '- 如果...' while neighboring bullets use ' - '), a minor formatting inconsistency but not a build-breaking issue. → Ensure consistent bullet indentation: ' - 如果没有潜在买家出价超过 $r_i$，房屋 $i$ 将由拍卖师保留'
• [minor · terminology] lectures/house_auction.md — ### Basic setting: The sentence "There are $m$ potential eligible buyers..." translation drops the sub-bullet structure by merging "* There are $m$ potential eligible buyers" and "* Each potential buyer is permitted to buy at most one house" into the same top-level bullet level inconsistently (one rendered as top-level bullet, one as unindented top-level instead of nested), slightly altering the original nested lis… → Preserve the original nested bullet indentation under 'There are $m$ potential eligible buyers' so that 'Each potential buyer is permitted...' remains a sub-bullet.
• [minor · fluency] lectures/house_auction.md — ## Is the greedy mechanism a VCG mechanism?: The phrase '让我们检验一次一个' translated as '让我们逐一检验' is fine, but the surrounding paragraph mixes punctuation styles acceptably; no major issue, just noting overall phrasing is natural.

---

🔍 Diff Quality

Check	Status
Scope Correct	✅
Position Correct	✅
Structure Preserved	✅
Heading-map Correct	✅
Overall	10/10

Summary: The translation sync correctly captures all source changes including renamed headings, new content sections, code refactoring, and the substantial new VCG analysis and exercises sections, all properly positioned and mapped.

---

This review was generated automatically by action-translation review mode.

[Copilot]

Copilot review overview

🟡 Changes recommended

An updated code cell in GC_Mechanism.start() uses %i to format a float price (self.p can become float due to 0.0), which will raise a TypeError during execution.

Review effort: Lite
Findings: 1

Open (1)

• %i format breaks when price becomes float · New

What changed in this PR

This PR syncs the Chinese translation of the house_auction lecture with the upstream English source, adding a new section comparing the greedy planner mechanism to VCG (including exercises/solutions) and updating associated citations/state metadata.

Changes:

• Updates lectures/house_auction.md structure and content, including a new “贪婪机制是 VCG 机制吗？” section and exercises with executable code cells.
• Adds new bibliography entries required by the new citations.
• Updates translation sync state metadata (source SHA, sync date, tool version, section count).

File	Description
lectures/​house_auction.md	Adds/updates translated lecture content, new VCG-comparison section, and new exercises/solutions (with code cells).
lectures/​_static/​quant-econ.bib	Adds BibTeX entries for newly cited references in the lecture.
.translate/​state/​house_auction.md.yml	Updates translation sync metadata to the new upstream source commit and tooling.

---

💡 Add a code-review agent skill or configure MCP servers for context-aware, tailored reviews. Learn more in the docs.

[github-actions]

🚀 Deployed on https://6ab8ac24658a620e929d37ce--astonishing-narwhal-a8fc64.netlify.app