analysis-journal

/analysis-journal — Insight Journal Manager

Records the reasoning process behind an analysis design as a structured event journal. Each event captures a discrete reasoning step — observation, hypothesis, evidence, question, decision, reflection, conclusion, or branch.

Based on Narrative Scaffolding (Huang+ IUI 2026) and Sensemaking Loop (Pirolli & Card) frameworks.

When to Use

• During active analysis: recording what you observed, decided, or discovered
• When choosing an analysis method or package (e.g., "CausalImpact を使う")
• When a new question arises during investigation
• When branching to an alternative hypothesis

When NOT to Use

• Creating a new design from scratch (→ /analysis-design)
• Structured reflection and conclusion (→ /analysis-reflection)
• Registering data sources or knowledge (→ /catalog-register)

Workflow

Step 1: Identify Target Design

If $ARGUMENTS contains a design ID (e.g., "FP-H01"), use it directly. Otherwise, call list_analysis_designs(status="analyzing") and ask user to select.

Validate with get_analysis_design(design_id).

Step 2: Load or Initialize Journal

Read .insight/designs/{design_id}_journal.yaml using the Read tool.

• If exists: load and show summary (event count, last 3 events, open questions)
• If not exists: create with initial structure using the Write tool:

metadata:
  design_id: "{design_id}"
  created_at: "{now in ISO 8601 JST}"
  updated_at: "{now in ISO 8601 JST}"
events: []

Step 3: Record Events (Interactive Loop)

Listen to user input and classify into InsightType:

User says...	InsightType	Example content
データを見たら〜 / 〜が見えた / 〜に気づいた	observe	"2026年1月以降、売上が前年比15%低下"
〜だと思う / 仮説: / 〜が原因では	hypothesize	"価格改定（+8%）が売上低下の主因"
〜で確認した / データが示す / 〜のエビデンス	evidence	"回帰分析でp<0.01の有意な負の相関"
〜が気になる / 〜を調べたい / なぜ〜	question	"季節要因を除外できているか？"
〜を使う / 〜で分析する / 手法:	decide	"CausalImpact で因果効果を推定する"
振り返ると / 見直すと / 反省点	reflect	"初期の相関分析では交絡が未考慮だった"
結論: / まとめると / 〜と言える	conclude	"価格改定は売上低下の主因と確認"
別の仮説 / 分岐したい / fork	branch	→ Step 4 (Branch Workflow)

For each event, construct and append to the journal YAML:

- id: "{design_id}-E{nn:02d}"   # Sequential within journal
  type: "{insight_type}"
  content: "{user's description}"
  evidence_refs: []               # Ask: "関連するデータソースID or ナレッジIDはある？"
  parent_event_id: null           # Ask: "どのイベントから派生した？" (show recent events)
  metadata: {}                    # Type-specific (see Metadata Convention below)
  created_at: "{now in ISO 8601 JST}"

Update metadata.updated_at in journal file header.

Efficiency rule: Don't ask for evidence_refs and parent_event_id on every event. Ask only when the user's statement implies a connection. Default to empty/null.

Step 4: Branch Workflow

When user wants to branch to an alternative hypothesis:

1. Ask for: new title, new hypothesis_statement, optional hypothesis_background
2. Call MCP tool:

   create_analysis_design(
       title=new_title,
       hypothesis_statement=new_hypothesis,
       hypothesis_background=source.hypothesis_background,  # Inherit if not provided
       parent_id=source_design_id,
       theme_id=source.theme_id,
   )
   

3. Record branch event in source journal:

   - id: "{source_id}-E{nn}"
     type: branch
     content: "分岐: {new_design_id} — {new_title}"
     metadata:
       new_design_id: "{new_design_id}"
       reason: "{why branching}"
   

4. Initialize new journal with hypothesize event:

   metadata:
     design_id: "{new_design_id}"
     created_at: "{now}"
     updated_at: "{now}"
   events:
     - id: "{new_id}-E01"
       type: hypothesize
       content: "{new_hypothesis_statement}"
       metadata:
         forked_from: "{source_design_id}"
       created_at: "{now}"
   

5. Show: "分岐完了。{new_design_id} のジャーナルを開始した。/analysis-journal {new_design_id} で続けられる"

Step 5: Show Summary on Exit

When user is done recording, show:

── Journal Summary: {design_id} ──
Phase: {inferred_phase}
Events: {total} ({observe}obs / {hypothesize}hyp / {evidence}evi / {question}q / {decide}dec / {reflect}ref / {conclude}con)
Open questions: {count}
  - {question_content} ({event_id})
Branches: {list of child design IDs}
Latest decision: {method} ({package})

Next: /analysis-reflection {design_id} で振り返りと結論導出

InsightType Convention

type	When to use	metadata fields
observe	Raw data observation, pattern noticed	—
hypothesize	Hypothesis formed or refined	{forked_from?: design_id}
evidence	Evidence found from data analysis	{direction: "supports" | "contradicts"}
question	New question or uncertainty raised	{priority?: "high" | "medium" | "low"}
decide	Method, tool, or approach chosen	{method: str, package?: str, reason?: str}

methodology への昇格: decide イベントで記録した method/package は、analysis-design の methodology フィールドに昇格できる。update_analysis_design の methodology パラメータで {method, package, reason} を渡す。

| reflect | Meta-level thinking about the analysis | — | | conclude | Conclusion drawn from evidence | {resolves?: event_id} | | branch | Fork to alternative hypothesis | {new_design_id: str, reason?: str} |

Phase Inference (Derived, Not Stored)

The current phase is inferred from the latest event type:

Latest event type	Inferred phase
observe, hypothesize	Narrative Development
evidence, question, decide	Investigation
reflect	Reflection
conclude, branch	Integration

Journal File Location

.insight/designs/{design_id}_journal.yaml

This file is skill-managed data, not MCP-managed (see YAML Format Reference in analysis-design SKILL.md).

Sibling/Tree Queries (No MCP Required)

To find sibling hypotheses:

designs = list_analysis_designs(theme_id=target.theme_id)
siblings = [d for d in designs if d.parent_id == target.parent_id and d.id != target.id]

To build hypothesis tree:

designs = list_analysis_designs(theme_id=theme_id)
roots = [d for d in designs if d.parent_id is None]
# Recursively build children from parent_id references

Open Questions (Inquiry Board)

A question event is considered open if no conclude event references it via metadata.resolves. To list open questions:

questions = [e for e in events if e.type == "question"]
resolved_ids = {e.metadata.resolves for e in events if e.type == "conclude" and e.metadata.get("resolves")}
open_questions = [q for q in questions if q.id not in resolved_ids]

MCP Tool Reference (Existing Only)

Tool	Used for
get_analysis_design(design_id)	Load target design
list_analysis_designs(status?, theme_id?)	Find designs for tree/sibling queries
create_analysis_design(...)	Branch workflow (create child design)

Error Handling

Situation	Action
Design not found	Show error, suggest list_analysis_designs()
Journal file corrupted	Backup corrupt file, reinitialize
Event ID conflict	Re-scan existing IDs and use max+1

Chaining

From	To	When
/analysis-design	→ /analysis-journal	After design creation: "推論過程を記録するなら /analysis-journal {id}"
/analysis-journal	→ /analysis-reflection	Evidence gathered: "振り返りと結論は /analysis-reflection {id}"
/analysis-journal	→ /analysis-journal	After branch: "分岐先のジャーナル: /analysis-journal {new_id}"
/analysis-reflection	→ /analysis-journal	Need more evidence: "追加調査は /analysis-journal {id}"
/data-lineage	→ /analysis-journal	Lineage diagram generated: "リネージ結果を証拠として記録するなら /analysis-journal {id}"
/analysis-revision	→ /analysis-journal	Need to investigate before fixing: "調査してから修正するなら /analysis-journal {id}"

Language Rules

• Follow project CLAUDE.md language settings. Default to Japanese if no setting.
• Code, IDs, tool names, and YAML fields always stay in English.
• Journal content follows the user's language (usually Japanese).