2026 / AI / Software

Nomad — Research-Mapping Web App

A Next.js app that turns an engineering query into a structured starting map: papers, researchers, topic clusters, a reading roadmap, and source-linked project directions.

Result: Turns a broad literature query into a ranked research map with a knowledge graph, roadmap, and quality report; 88 tests pass across 9 suites, with 2 of 5 topic fixtures frozen.

Nomad turns a broad literature query into a smaller starting map—papers to read, recent work to watch, researchers, topic clusters, a reading roadmap, and project directions linked back to source records. OpenAlex is the primary source; the app runs without an OpenAI key using deterministic keyword, metadata, and citation signals. Citation-based ranks are reading-order signals, not predictions of research value.

Category
AI / Software
Timeline
2026
Status
Complete
Tools
Next.js / TypeScript / OpenAlex API / Vitest

Problem

What the build needed to solve

My contribution

Built the query-variant retrieval, OpenAlex normalization/deduplication/filtering, ranking and clustering, the classic map and v2 explorer (graph, mind map, trend radar, quality report), and the deterministic test and fixture suite.

A single query to a scholarly database returns a noisy, partial slice of a field. A useful starting map needs multi-query coverage, de-duplicated candidates, transparent ranking, and honest limits—without pretending citation counts predict future impact.

Constraints

Design boundaries

Run without an OpenAI key using deterministic signals; embeddings optional.

Deduplicate and normalize OpenAlex records before ranking.

Keep ranking signals as reading-order cues, not impact predictions.

Make evaluation repeatable with frozen OpenAlex fixtures.

Build log

Design evolution

Iterations, issues, and fixes documented as a compact notebook timeline.

Multi-query retrieval

One query under-covers a field.

Generate query variants, then normalize, deduplicate, and filter the OpenAlex results.

Broader candidate coverage before ranking.

Transparent ranking

Opaque or impact-implying ranks mislead the reader.

Rank on keyword, metadata, and citation signals as explicit reading-order cues, with optional embeddings.

A source-linked map, graph, roadmap, and quality report.

Repeatable evaluation

Live OpenAlex changes make results non-reproducible.

Froze OpenAlex captures as fixtures behind an 88-test suite across 9 files.

2 of 5 audit-topic fixtures active; keyed precision/recall evaluation still pending.

Nomad retrieval pipeline architecture schematic
Retrieval pipeline: query variants, OpenAlex works and authors, normalize/deduplicate/filter, rank and cluster, research map and quality report (architecture schematic, not a product screenshot).

Testing

Results

Tests

88 passing

Test suites

9

Topic fixtures

2 of 5

Primary source

OpenAlex

Views

Map + explorer

Keyed eval

Pending

The automated suite covers deduplication, relevance diagnostics, scoring, project-idea constraints, roadmap, trend, and clustering across 9 files and 88 tests, using two frozen OpenAlex captures.

Precision, recall, and ranking quality across mechanical-engineering fields are explicitly not yet evaluated; the keyed relevance run is the next measurement.

Scope note: Deterministic components are tested with frozen fixtures. A keyed relevance evaluation—precision at fixed result counts and ranking versus an OpenAlex baseline—has not been run yet, and citation ranks are reading-order signals, not impact predictions.

Reflection

Engineering lessons

  • Coverage is won in retrieval (query variants plus deduplication), not only in ranking.
  • Frozen fixtures make ranking checks repeatable without live-API drift.
  • A shipped app still needs a real relevance evaluation before claiming ranking quality.

Links

Files and references