⚡ Bolt: 최솟값 탐색 정렬 병목(O(N log N)) 제거 및 성능 최적화

[seonghobae]

💡 What: surveyFA.R 내부에서 데이터의 최소값을 추출할 때 발생하는 전체 배열 정렬(sorting) 과정을 선형 스캔(linear scan)으로 변경하였습니다.
🎯 Why: sort(p_values) 후 [1L]로 가져오는 접근 방식은 전체 데이터를 $O(N \log N)$ 비용으로 정렬하여 불필요한 성능 저하를 유발합니다. 단순 최소값의 인덱스를 반환하는 which.min을 활용하면 $O(N)$의 시간 복잡도로 빠르게 처리할 수 있습니다.
📊 Impact: 반복적으로 수행되는 모델 평가 루틴에서 불필요한 정렬 오버헤드를 감소시켜 R 환경의 실행 속도 및 성능을 개선합니다.
🔬 Measurement: 패키지의 로컬 설치 및 testthat 테스트가 100% 정상 통과함을 확인했습니다.

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PR created automatically by Jules for task 16088346372224250161 started by @seonghobae

Summary by CodeRabbit

• 개선 사항
  • 적합도 p-value가 가장 작은 문항을 더 효율적으로 선택하도록 개선했습니다.
  • 관련 학습 문서의 가독성을 높이기 위해 줄바꿈과 일부 제목을 정리했습니다.
  • 최솟값·최댓값 탐색 방법에 대한 학습 내용을 추가했습니다.

[google-labs-jules]

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 99c08cd3-7df7-4fbf-b5f3-4f3230034df9

📥 Commits

Reviewing files that changed from the base of the PR and between 35e4498 and 2f98041.

📒 Files selected for processing (2)

• .jules/bolt.md
• R/surveyFA.R

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📝 Walkthrough

Walkthrough

select_bad_item()이 정렬 대신 which.min()을 사용합니다. .jules/bolt.md는 기존 최적화 학습 항목의 형식을 정리하고 which.min() 및 which.max() 사용법을 추가합니다.

Changes

최솟값 탐색 최적화

Layer / File(s)	Summary
최솟값 선택 로직 변경 R/surveyFA.R	select_bad_item()이 적합도 p-value를 정렬한 뒤 첫 항목을 선택하는 대신 which.min()으로 최솟값의 위치를 찾습니다.
최적화 학습 기록 정리 .jules/bolt.md	기존 학습 항목의 줄바꿈과 제목을 정리했습니다. sort() 대신 which.min() 또는 which.max()를 사용하는 항목을 추가했습니다.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Possibly related PRs

• ContextualWisdomLab/aFIPC#178: select_bad_item()의 정렬 기반 최솟값 선택을 which.min()으로 변경합니다.
• ContextualWisdomLab/aFIPC#181: 동일한 p-value 최솟값 탐색 최적화를 적용합니다.
• ContextualWisdomLab/aFIPC#200: select_bad_item()에서 which.min()을 사용하도록 변경합니다.

Suggested reviewers: copilot

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	제목은 전체 정렬을 제거하고 which.min()으로 최솟값 탐색 성능을 개선한 주요 변경 사항을 정확히 요약합니다.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch bolt/surveyFA-optimization-16088346372224250161

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[opencode-agent]

Pull request overview

OpenCode cannot approve yet because required coverage evidence did not pass.

Review outcome

1. HIGH .github/workflows/opencode-review.yml:1 - Coverage evidence did not prove required test/docstring evidence

• Problem: The required coverage-evidence job result was failure, so OpenCode cannot establish approval sufficiency for this head.

• Root cause: Automated approval is only valid when the same-head coverage-evidence job proves supported repository test suites passed and configured docstring gates passed or were advisory, or reports not applicable because no supported source files or package manifests exist. Missing, failed, skipped, unavailable, or unsupported-tooling test evidence is a blocker.

• Fix: Install or configure the repository test/docstring evidence tooling when source files or package manifests exist, rerun the current-head coverage-evidence job, and approve only after it reports success with required evidence or explicit no-source not-applicable evidence.

• Regression test: Keep the approval branch checking needs.coverage-evidence.result == success before posting APPROVE, and publish REQUEST_CHANGES when coverage-evidence blocker states such as cancelled, skipped, failed, unsupported-tooling, or below-100 evidence are present.

• Result: REQUEST_CHANGES

• Reason: coverage-evidence result was failure, so required test/docstring evidence was not proven for current head 2f980414f5c02da4120e6b94a04c707f599f0709.

• Head SHA: 2f980414f5c02da4120e6b94a04c707f599f0709

• Workflow run: 30854229434

• Workflow attempt: 1

Coverage evidence

Coverage Decision

• Result: FAIL
• Test evidence: not proven passing
• Docstring evidence: not proven passing when configured
• Failure count: 1

Changed-File Evidence Map

flowchart LR
  PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
  Evidence --> S1["Changed file (2 files)"]
  S1 --> I1["repository behavior"]
  I1 --> R1["Review risk: Changed file (2 files)"]
  R1 --> V1["required checks"]

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[opencode-agent]

OpenCode Review Overview

• Head SHA: 2f980414f5c02da4120e6b94a04c707f599f0709
• Workflow run: 30854229434
• Workflow attempt: 1
• Gate result: REQUEST_CHANGES (approval step)

Pull request overview

OpenCode cannot approve yet because required coverage evidence did not pass.

Review outcome

1. HIGH .github/workflows/opencode-review.yml:1 - Coverage evidence did not prove required test/docstring evidence

• Problem: The required coverage-evidence job result was failure, so OpenCode cannot establish approval sufficiency for this head.

• Root cause: Automated approval is only valid when the same-head coverage-evidence job proves supported repository test suites passed and configured docstring gates passed or were advisory, or reports not applicable because no supported source files or package manifests exist. Missing, failed, skipped, unavailable, or unsupported-tooling test evidence is a blocker.

• Fix: Install or configure the repository test/docstring evidence tooling when source files or package manifests exist, rerun the current-head coverage-evidence job, and approve only after it reports success with required evidence or explicit no-source not-applicable evidence.

• Regression test: Keep the approval branch checking needs.coverage-evidence.result == success before posting APPROVE, and publish REQUEST_CHANGES when coverage-evidence blocker states such as cancelled, skipped, failed, unsupported-tooling, or below-100 evidence are present.

• Result: REQUEST_CHANGES

• Reason: coverage-evidence result was failure, so required test/docstring evidence was not proven for current head 2f980414f5c02da4120e6b94a04c707f599f0709.

• Head SHA: 2f980414f5c02da4120e6b94a04c707f599f0709

• Workflow run: 30854229434

• Workflow attempt: 1

Coverage evidence

Coverage Decision

• Result: FAIL
• Test evidence: not proven passing
• Docstring evidence: not proven passing when configured
• Failure count: 1

Changed-File Evidence Map

flowchart LR
  PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
  Evidence --> S1["Changed file (2 files)"]
  S1 --> I1["repository behavior"]
  I1 --> R1["Review risk: Changed file (2 files)"]
  R1 --> V1["required checks"]

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