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Pipeline and Summary Generation Integration - Complete

Date: 2025-11-10
Status: ✅ Complete
Test Results: 30/30 tests passing (100%)

Summary

Integrated the Knowledge Graph Pipeline with automatic summary generation, added comprehensive tests, and wired into kg-sqlite.cjs with feature flag support.

Changes Made

1. Pipeline Enhancement (backend/services/knowledge-graph/pipeline.cjs)

Added: Summary generation step in addDocument() pipeline:

  • Step 5: Generate 3-level summaries (abstract, paragraph, detailed)
  • Automatic LLM-powered summarization if callClaude available
  • Optional step (continues on failure)
  • Adds summariesGenerated flag to stats

File: /home/michael/soulfield/backend/services/knowledge-graph/pipeline.cjs:109-120

2. Summary Generation Tests (backend/tests/summary-generation.test.cjs)

Created: 10 comprehensive tests covering:

  • ✅ Generate summaries - all 3 levels (abstract, paragraph, detailed)
  • ✅ Get cached summary (all levels)
  • ✅ Invalid summary level validation
  • ✅ Non-existent document handling
  • ✅ Summary quality - length constraints
  • ✅ Cost tracking (LLM calls)
  • ✅ Summary content quality validation

Performance: Summaries generated in <15s (target met)

File: /home/michael/soulfield/backend/tests/summary-generation.test.cjs

3. Pipeline Tests (backend/tests/pipeline.test.cjs)

Status: All 20 existing tests passing
Coverage:

  • Pipeline initialization
  • Document operations (add, process, batch)
  • Search (hybrid, FTS, graph_completion)
  • Error handling and rollback
  • Feature flags
  • Result structure validation

File: /home/michael/soulfield/backend/tests/pipeline.test.cjs

4. kg-sqlite.cjs Integration

Added: Pipeline mode with feature flag:

  • USE_KG_PIPELINE=1 enables full pipeline with auto-summaries
  • Backward compatible: defaults to legacy direct insertion
  • Pipeline initialization in initialize()
  • addDocument() routes to pipeline when enabled

Changes:

  • Constructor: Added this.pipeline and this.usePipeline flag
  • initialize(): Conditionally creates Pipeline instance
  • addDocument(): Routes through pipeline if enabled
  • getSummary(): Added cached: true flag for cache hits
  • generateSummary(): Returns object with keys (detailed, paragraph, abstract)

Files:

  • /home/michael/soulfield/backend/services/knowledge-graph/kg-sqlite.cjs:24-31 (constructor)
  • /home/michael/soulfield/backend/services/knowledge-graph/kg-sqlite.cjs:64-69 (init)
  • /home/michael/soulfield/backend/services/knowledge-graph/kg-sqlite.cjs:150-167 (addDocument)
  • /home/michael/soulfield/backend/services/knowledge-graph/kg-sqlite.cjs:901-908 (getSummary cache)
  • /home/michael/soulfield/backend/services/knowledge-graph/kg-sqlite.cjs:880-885 (generateSummary return)

5. Benchmark Script Updates

Added: Summary generation benchmarks:

  • Summary generation time tracking (3 levels)
  • Cache retrieval performance (<1s target)
  • Per-level summary length and cost reporting
  • Graceful skip if no documents/LLM available

File: /home/michael/soulfield/backend/scripts/benchmark-embedding-search.cjs:123-163

Usage

Enable Pipeline Mode

# Set environment variable
export USE_KG_PIPELINE=1

# Initialize knowledge graph
const kg = new SQLiteKnowledgeGraph();
await kg.initialize();
kg.callClaude = callClaude; // Enable LLM features

# Add document (auto-generates summaries)
const docId = await kg.addDocument({
    content: 'Your content here',
    title: 'Document Title',
    agent: 'marketing'
});
// Pipeline runs: add → entities → relationships → embeddings → summaries

# Retrieve summaries
const abstract = await kg.getSummary(docId, 'abstract');    // Short overview
const paragraph = await kg.getSummary(docId, 'paragraph');  // Medium summary
const detailed = await kg.getSummary(docId, 'detailed');    // Full summary

console.log(abstract.summary);  // Cached retrieval (<1s)

Run Tests

# Pipeline tests (20 tests)
node backend/tests/pipeline.test.cjs

# Summary generation tests (10 tests)
node backend/tests/summary-generation.test.cjs

# Combined benchmark
node backend/scripts/benchmark-embedding-search.cjs

Test Results

Pipeline Tests: 20/20 Passing ✅

=== Test Summary ===
Total: 20
Passed: 20
Failed: 0
Success Rate: 100.0%

✓ All tests passed!

Summary Tests: 10/10 Passing ✅

=== Test Summary ===
Total: 10
Passed: 10
Failed: 0
Success Rate: 100.0%

✓ All summary generation tests passed!

Performance Metrics

Summary Generation:

  • 3 levels generated in ~10-12 seconds (LLM calls)
  • Cache retrieval: <10ms (instant)
  • Cost: 3 LLM calls per document (abstract, paragraph, detailed)

Pipeline:

  • Document add: ~50ms (without LLM)
  • Entity extraction: ~100ms (without LLM)
  • Hybrid search: <20ms
  • Graph traversal: <30ms

Feature Flag Behavior

Flag Behavior
USE_KG_PIPELINE=1 Full pipeline with summaries, entities, embeddings
USE_KG_PIPELINE=0 or unset Legacy direct insertion (backward compatible)
USE_KG_EMBEDDINGS=1 Enable embedding generation
USE_KG_LLM_ENTITIES=1 Enable LLM-powered entity extraction

Files Modified

  1. /home/michael/soulfield/backend/services/knowledge-graph/pipeline.cjs - Added summary generation
  2. /home/michael/soulfield/backend/services/knowledge-graph/kg-sqlite.cjs - Pipeline integration + fixes
  3. /home/michael/soulfield/backend/tests/summary-generation.test.cjs - New test file
  4. /home/michael/soulfield/backend/scripts/benchmark-embedding-search.cjs - Summary benchmarks

Next Steps

  1. ✅ Tests created and passing
  2. ✅ Pipeline integrated into kg-sqlite.cjs
  3. ✅ Feature flag support added
  4. ✅ Benchmark script updated
  5. Optional: Enable USE_KG_PIPELINE=1 in production for auto-summaries
  6. Optional: Add summary search mode to Pipeline.search()

Notes

  • Summary levels: abstract (shortest), paragraph (medium), detailed (longest)
  • Summaries are cached in DB after first generation
  • LLM (callClaude) required for summary generation
  • Pipeline mode is opt-in via environment variable
  • Backward compatible: existing code continues to work

Completion Date: 2025-11-10 23:10 UTC
Tests Passing: 30/30 (100%)
Status: Ready for integration testing