starmen1265
321b097492
- Create 13-04-SUMMARY.md with execution details - Update STATE.md with position and performance metrics - Update ROADMAP.md with plan progress (1/7 complete) - Mark TITLE-01, TITLE-02, TITLE-03 requirements complete Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
102 lines
3.1 KiB
Markdown
102 lines
3.1 KiB
Markdown
---
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phase: 13-llm
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plan: 04
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subsystem: llm
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tags: [pydantic, llm, semantic-segmentation, title-generation]
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# Dependency graph
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requires: []
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provides:
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- VideoSegment.title 字段和验证器
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- SEGMENTATION_PROMPT 标题生成指令
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- 标题生成测试套件
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affects: [13-06, 13-07]
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# Tech tracking
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tech-stack:
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added: []
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patterns: [pydantic-field-validator, optional-string-validation]
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key-files:
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created:
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- kb_workflow/srt/semantic_engine.py
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- tests/test_semantic_engine.py
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modified: []
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key-decisions:
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- "标题验证：使用 Pydantic @field_validator 验证标题长度不超过 15 字"
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- "标题生成：LLM 自主判断是否需要标题，Prompt 中给出明确指导"
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- "标题格式：简洁描述型（5-15字），如「机器学习概述」"
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patterns-established:
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- "Pattern 1: Pydantic @field_validator 用于字段级别验证"
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- "Pattern 2: Optional[str] 字段允许 null 值"
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requirements-completed: [TITLE-01, TITLE-02, TITLE-03]
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# Metrics
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duration: 15min
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completed: 2026-03-22
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---
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# Phase 13: Plan 04 - 主题标题生成 Summary
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**使用 Pydantic @field_validator 实现 VideoSegment.title 字段验证（不超过 15 字），Prompt 中添加标题生成指令让 LLM 自主判断是否需要标题**
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## Performance
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- **Duration:** 15 min
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- **Started:** 2026-03-21T16:22:59Z
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- **Completed:** 2026-03-21T16:37:00Z
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- **Tasks:** 1
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- **Files modified:** 2
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## Accomplishments
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- VideoSegment.title 字段定义为 Optional[str]，支持有标题和无标题分段
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- @field_validator 验证标题长度不超过 15 字，超过时抛出 ValueError
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- SEGMENTATION_PROMPT 包含标题生成指令（第 6 点和输出格式说明）
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- 测试验证标题生成、标题省略、标题长度验证
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## Task Commits
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Each task was committed atomically:
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1. **Task 1: 实现标题生成功能** - `8c2b3e0` (feat)
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**Plan metadata:** (pending final commit)
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## Files Created/Modified
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- `kb_workflow/srt/semantic_engine.py` - 语义分段引擎模块，包含 VideoSegment 和 SegmentationResult Pydantic 模型，标题长度验证器
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- `tests/test_semantic_engine.py` - 测试套件，包含标题生成和验证测试
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## Decisions Made
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- 标题验证：使用 Pydantic @field_validator 在字段级别验证标题长度
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- 标题生成策略：LLM 自主判断，Prompt 中明确"主题/章节类型生成标题，论点/观点类型不加标题"
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- 标题长度限制：不超过 15 字，验证器中提供清晰的错误消息
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## Deviations from Plan
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None - plan executed exactly as written.
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## Issues Encountered
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- **测试数据问题**：创建 15 字测试字符串时遇到汉字计数问题，通过使用简单数字汉字解决（"一二三四五六七八九十十一二十三"）
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- **start_index 约束**：现有 VideoSegment 模型中 start_index 有 `ge=1` 约束，测试中需要使用 start_index=1 而非 0
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## User Setup Required
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None - no external service configuration required.
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## Next Phase Readiness
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- 标题生成功能已完成，可被后续计划使用
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- Pydantic 模型和验证器已建立，可扩展用于其他字段验证
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- 测试框架已就绪，可添加更多测试场景
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---
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*Phase: 13-llm, Plan: 04*
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*Completed: 2026-03-22*
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