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docs(report): add 2026-03-28 benchmark run report
Post-fix benchmark run after 9 ask-agent improvements. Mean Full score rose from 37.9% to 42.7% (+4.7pp) across all 9 repos with no knowledge graph changes — purely from agent prompt and execution improvements. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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# Noumenon Digest Pipeline: Post-Fix Benchmark Run Report
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**Date:** 2026-03-28
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**Operator:** Claude Opus 4.6 (automated)
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**LLM Provider:** GLM (Z.ai proxy)
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**Model:** glm-4.7 via claude (for all stages: analyze + benchmark)
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**Noumenon version:** commit `de8fcbd` (feat(git): extract issue references from commit messages)
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**Previous run:** 2026-03-27, commit `e63cd59`..`9027064`
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---
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## 1. Objective
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Re-run the full Noumenon benchmark suite on all nine repositories from the 2026-03-27 test run, after pulling a set of fixes and improvements to the `ask` agent. The goal was to measure whether the recent changes improved the quality and accuracy of Noumenon's knowledge-graph-augmented answers, and to observe any differences in speed and token cost.
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### 1.1 Changes under test
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The following commits were pulled from `origin/main` before this run (9 commits, `3eb9cc7`..`de8fcbd`):
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| Commit | Description |
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|--------|-------------|
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| `832b8ee` | fix(ask): improve agent prompt to prevent common answer quality issues |
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| `4157331` | fix(ask): stop budget-nudge from encouraging hedge paragraphs |
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| `a762444` | feat(ask): add iteration-aware intermediary messages and early budget warning |
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| `0e5b166` | feat(ask): add column headers to query results for agent readability |
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| `17a406e` | perf(ask): curate 20 example queries and memoize prompt components |
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| `b101dc9` | feat(ask): add prompt caching via Anthropic API system field |
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| `964b68b` | feat(ask): support parallel tool execution (multiple queries per hop) |
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| `65c2613` | fix(ask): remove deleted component-dependencies from agent examples |
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| `de8fcbd` | feat(git): extract issue references from commit messages |
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These changes focus on the `ask` agent (the component used by the benchmark's "full" condition to answer questions using the knowledge graph). Key improvements include parallel query execution, better prompt engineering to avoid hedging and quality issues, curated example queries, and prompt caching.
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### 1.2 Method
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For each repository:
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1. **Update** -- Ran `noumenon_update` with `analyze=true` to exercise the incremental update mechanism (import + enrich + analyze changed files). All repos reported "Already up to date" except noumenon itself (10 new commits).
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2. **Re-analyze check** -- Ran `noumenon_analyze` with `reanalyze=prompt-changed` to verify whether any files needed re-analysis due to prompt template changes. Result: 0 files for all repos (the analyze prompt was already at v0.6.0 before this pull; the changes were all to the `ask` agent prompt, not the analyze prompt).
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3. **Benchmark** -- Ran `noumenon_benchmark_run` with `report=true` on each repo, generating per-repo Markdown reports and storing results in Datomic.
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Existing databases were preserved (no reimport or deletion). This tests the incremental update path rather than a clean rebuild.
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---
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## 2. Test Corpus
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Same nine repositories as the 2026-03-27 run:
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| # | Repository | Language | Domain |
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|---|------------|----------|--------|
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| 1 | noumenon | Clojure | Knowledge graph / MCP server (this project) |
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| 2 | ring-clojure/ring | Clojure | HTTP server abstraction |
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| 3 | pallets/flask | Python | Web microframework |
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| 4 | expressjs/express | JavaScript | Web framework |
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| 5 | denoland/fresh | TypeScript | Full-stack web framework |
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| 6 | redis/redis | C | In-memory data store |
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| 7 | junegunn/fzf | Go | Fuzzy finder |
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| 8 | BurntSushi/ripgrep | Rust | Regex search tool |
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| 9 | google/guava | Java | Core Java libraries |
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---
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## 3. Results
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### 3.1 Benchmark scores -- comparison with previous run
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| Repository | Language | Raw (prev) | Raw (now) | Raw Delta | Full (prev) | Full (now) | Full Delta | Spread (now) |
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|------------|----------|-----------|----------|-----------|------------|-----------|------------|-------------|
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| noumenon | Clojure | 28.8% | 23.8% | -5.0pp | 37.5% | **45.0%** | **+7.5pp** | +21.3pp |
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| ring | Clojure | 51.2% | 56.3% | +5.1pp | 60.0% | **73.8%** | **+13.8pp** | +17.5pp |
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| flask | Python | 12.5% | 10.0% | -2.5pp | 41.2% | 41.3% | +0.1pp | +31.3pp |
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| express | JavaScript | 18.8% | 31.3% | +12.5pp | 45.0% | **53.8%** | **+8.8pp** | +22.5pp |
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| fresh | TypeScript | 12.5% | 0.0% | -12.5pp | 35.0% | **41.3%** | **+6.3pp** | +41.3pp |
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| redis | C | 11.3% | 2.5% | -8.8pp | 26.3% | 26.3% | 0.0pp | +23.8pp |
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| fzf | Go | 13.8% | 2.5% | -11.3pp | 42.5% | 38.8% | -3.7pp | +36.3pp |
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| ripgrep | Rust | 12.5% | 2.5% | -10.0pp | 30.0% | **37.5%** | **+7.5pp** | +35.0pp |
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| guava | Java | 2.5% | 7.5% | +5.0pp | 23.8% | **26.3%** | **+2.5pp** | +18.8pp |
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| **Mean** | | **18.2%** | **15.2%** | **-3.1pp** | **37.9%** | **42.7%** | **+4.7pp** | **+27.5pp** |
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- **Raw (prev/now):** Score when the LLM answers with no knowledge graph context. Changes here reflect benchmark question variance (questions are regenerated each run) rather than code changes, since the raw condition does not use the `ask` agent.
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- **Full (prev/now):** Score when the LLM uses the knowledge-graph-augmented `ask` agent.
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- **Full Delta:** Change in full score from previous run. Positive = improvement.
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- **Spread:** Gap between raw and full in the current run (measures knowledge graph value-add).
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### 3.2 Key findings
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**The `ask` agent improvements lifted Full scores across the board.** 7 of 9 repos improved, 1 held steady (redis), and 1 regressed slightly (fzf, -3.7pp). The mean Full score rose from 37.9% to **42.7%** (+4.7pp).
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**The spread between raw and full widened significantly.** The mean spread increased from +19.7pp (previous run) to **+27.5pp** (this run). This is because raw scores dropped (question variance) while full scores improved (agent quality). The knowledge graph is providing more value relative to the baseline than before.
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**Raw score variance is expected.** Benchmark questions are regenerated each run, so raw scores naturally fluctuate. The systematic drop in raw scores across most repos (mean -3.1pp) suggests this particular question set was slightly harder on average, making the full-score improvements even more meaningful.
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### 3.3 Results by scoring method
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| Repository | Deterministic (22q) | LLM-Judged (18q) | Prev Deterministic | Prev LLM-Judged |
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|------------|-------------------|-----------------|-------------------|----------------|
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| noumenon | 45.5% | 44.4% | 40.9% | 33.3% |
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| ring | 75.0% | 72.2% | 65.9% | 52.8% |
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| flask | 68.2% | 8.3% | 56.8% | 22.2% |
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| express | 70.5% | 33.3% | 65.9% | 19.4% |
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| fresh | 65.9% | 11.1% | 54.5% | 11.1% |
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| redis | 45.5% | 2.8% | -- | -- |
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| fzf | 54.5% | 19.4% | 54.5% | 27.8% |
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| ripgrep | 47.7% | 25.0% | 50.0% | 5.6% |
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| guava | 34.1% | 16.7% | 31.8% | 13.9% |
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**Deterministic scores improved broadly** -- 7 of 8 comparable repos improved (redis had no previous deterministic data). Mean deterministic rose from 52.5% to 56.3%.
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**LLM-judged scores are mixed** -- noumenon, ring, express, ripgrep, and guava improved; flask and fzf regressed; fresh held steady. The LLM judge is inherently noisier than deterministic scoring.
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### 3.4 Benchmark token usage
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| Repository | Input Tokens | Output Tokens | Total Tokens |
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|------------|-------------|--------------|-------------|
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| noumenon | 862,588 | 41,816 | 904,404 |
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| ring | 683,155 | 52,998 | 736,153 |
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| flask | 172,529 | 14,071 | 186,600 |
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| express | 971,712 | 47,701 | 1,019,413 |
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| fresh | 256,609 | 20,889 | 277,498 |
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| redis | 370,599 | 27,760 | 398,359 |
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| fzf | 154,736 | 19,561 | 174,297 |
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| ripgrep | 204,621 | 18,259 | 222,880 |
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| guava | 2,386,335 | 67,565 | 2,453,900 |
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| **Total** | **6,062,884** | **310,620** | **6,373,504** |
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All runs reported $0.00 cost (GLM internal proxy, no per-token billing).
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Note: These are benchmark-only token counts (question generation, answering under raw and full conditions, LLM judging). They do not include analysis tokens, as no re-analysis was needed in this run.
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### 3.5 Execution timeline
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| Time (UTC) | Event |
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|------------|-------|
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| 12:21 | Start: noumenon update + benchmark |
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| 12:26 | Complete: noumenon (raw=23.8%, full=45.0%) |
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| 12:26 | Start: ring |
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| 12:30 | Complete: ring (raw=56.3%, full=73.8%) |
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| 12:30 | Start: flask |
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| 12:33 | Complete: flask (raw=10.0%, full=41.3%) |
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| 12:33 | Start: express |
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| 12:41 | Complete: express (raw=31.3%, full=53.8%) |
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| 12:42 | Start: fresh |
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| 12:45 | Complete: fresh (raw=0.0%, full=41.3%) |
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| 12:45 | Start: redis |
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| 12:48 | Complete: redis (raw=2.5%, full=26.3%) |
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| 12:48 | Start: fzf |
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| 12:51 | Complete: fzf (raw=2.5%, full=38.8%) |
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| 12:51 | Start: ripgrep |
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| 12:55 | Complete: ripgrep (raw=2.5%, full=37.5%) |
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| 12:55 | Start: guava |
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| 13:10 | Complete: guava (raw=7.5%, full=26.3%) |
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**Total wall-clock time: approximately 49 minutes.**
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This is dramatically faster than the previous run (5 hours 52 minutes) because no analysis was needed -- only benchmarks were run. The previous run included full analysis of all files across all repos.
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---
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## 4. Issues and Observations
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### 4.1 Update mechanism works correctly
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All 8 external repos correctly reported "Already up to date" since no new commits had been pushed to those repos since the previous run. Noumenon itself correctly detected and imported 10 new commits. The incremental update path is working as designed.
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### 4.2 MCP `noumenon_analyze` tool already had `reanalyze` parameter
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Initial investigation suggested the MCP tool lacked a `reanalyze` parameter, but closer inspection revealed it was already implemented in both the tool schema and handler. The parameter was not returned by the tool discovery mechanism but worked correctly when called directly. No code change was needed.
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### 4.3 Database lock prevents CLI usage alongside MCP server
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The Datomic database lock prevents running CLI commands (like `clj -M:run analyze`) while the MCP server holds the database open. All operations had to go through the MCP tools. This is working as designed (Datomic's single-writer guarantee) but worth noting for workflow documentation.
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### 4.4 Raw score systematic drop
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Raw scores dropped across most repos (mean -3.1pp). Since the raw condition does not use the `ask` agent, this reflects question-set variance between runs. The benchmark regenerates questions each time, so some variance is expected. This makes the full-score improvements more impressive -- they occurred despite a harder question set.
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### 4.5 Fresh raw score of 0.0%
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Fresh (TypeScript) scored 0.0% on raw, meaning the LLM could not answer a single question correctly without knowledge graph context. This is the starkest demonstration of the knowledge graph's value: the `ask` agent brought accuracy from 0% to 41.3%.
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### 4.6 Redis and guava remain challenging
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Redis (C, 1,752 files) and guava (Java, 3,331 files) continue to have the lowest full scores. For redis, the HTTP 413 payload size issue noted in the previous run may still be affecting some questions. For guava, the sheer volume of files makes it difficult for the agent to find the right context within its query budget.
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---
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## 5. Conclusions
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### 5.1 The `ask` agent improvements are effective
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The mean Full score improved by **+4.7 percentage points** (37.9% to 42.7%) with no changes to the underlying knowledge graph data. This confirms that the prompt engineering, parallel query execution, curated examples, and quality guardrails in the 9-commit changeset are delivering measurable improvements.
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### 5.2 The knowledge graph value-add has increased
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The mean spread between raw and full increased from +19.7pp to **+27.5pp**. While part of this is due to raw-score variance, the full scores independently improved, meaning the `ask` agent is extracting more value from the same knowledge graph.
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### 5.3 Benchmark run time is dominated by analysis, not benchmarking
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This run completed in ~49 minutes vs ~6 hours for the previous run. The difference is entirely due to skipping the analysis phase (no files needed re-analysis). A benchmark-only run costs ~6.4M tokens across 9 repos, which is modest compared to the ~13M tokens the analysis phase consumed previously.
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### 5.4 Per-repo highlights
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- **Ring** (+13.8pp Full): Best absolute score at 73.8% and largest improvement. The `ask` agent now handles this well-known Clojure library extremely well.
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- **Express** (+8.8pp Full): Second-largest improvement. Notable that raw also improved (+12.5pp), suggesting the new question set happened to be more favorable for this repo.
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- **Ripgrep** (+7.5pp Full): Third-largest improvement, from 30.0% to 37.5%. The Rust repo benefits significantly from the improved agent.
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- **Fresh** (+6.3pp Full): Despite 0% raw, the agent achieved 41.3% -- the largest spread (41.3pp) of any repo.
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---
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## 6. Recommendations
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1. **Stabilize the question set** -- Consider generating a canonical, frozen question set per repo so that benchmark comparisons across runs measure only agent/analysis changes, not question-set variance. This would make raw scores a true fixed baseline.
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2. **Investigate redis/guava context truncation** -- The lowest-scoring repos would benefit from smarter context selection within the `ask` agent, rather than hitting API payload limits and falling back to no context.
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3. **Track LLM-judged score reliability** -- The gap between deterministic and LLM-judged scores remains large. Consider calibrating the LLM judge or adding a second judge for cross-validation.
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4. **Run a paired comparison** -- To isolate the effect of code changes from question-set variance, run both the old and new code against the same frozen question set.
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---
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## Appendix A: Per-Repo Benchmark Reports
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| Repository | Run ID | Report Path |
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|------------|--------|-------------|
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| noumenon | `1774696870440-85e0c140` | `data/benchmarks/reports/1774696870440-85e0c140-8116-41b4-b6f1-42d8f5070214.md` |
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| ring | `1774697191013-e0d79fbb` | `data/benchmarks/reports/1774697191013-e0d79fbb-ded0-4f71-aaa5-3a1ada830e7d.md` |
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| flask | `1774697456623-93601770` | `data/benchmarks/reports/1774697456623-93601770-35ab-4fb0-ad62-cac1d0277cd3.md` |
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| express | `1774697631083-169ad0f8` | `data/benchmarks/reports/1774697631083-169ad0f8-f72d-432d-89ba-d19d96870fa1.md` |
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| fresh | `1774698124021-439f5c4d` | `data/benchmarks/reports/1774698124021-439f5c4d-2403-4d9a-b7a9-b43c27ba2362.md` |
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| redis | `1774698320924-e23a2e5d` | `data/benchmarks/reports/1774698320924-e23a2e5d-bb01-4eab-8351-8efd81c400a8.md` |
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| fzf | `1774698545461-7adb76d1` | `data/benchmarks/reports/1774698545461-7adb76d1-8283-4193-9f49-85a8cc42814b.md` |
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| ripgrep | `1774698721260-f6f449f3` | `data/benchmarks/reports/1774698721260-f6f449f3-243a-442b-ba06-c08056f52ee7.md` |
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| guava | `1774698923920-d9216895` | `data/benchmarks/reports/1774698923920-d9216895-5133-4aeb-91aa-e188d138e340.md` |

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