Link Analysis Board

An interactive link analysis and relationship visualization tool for investigators, analysts, and intelligence professionals. Build visual investigation boards to map entities, connections, and patterns — with optional AI-powered entity extraction from unstructured text.

Features

• Graph Visualization — Cytoscape.js-powered interactive canvas with force-directed layout, context menus, neighborhood highlighting, and zoom controls
• Entity Types — Person, Organization, Phone, Event — each with distinct shapes and colors
• Relationship Mapping — Financial, Personal, Professional, Criminal, Communication, Family edges with confidence levels and directional support
• AI Entity Extraction — Paste articles, case notes, or intelligence reports and let an LLM automatically extract entities and relationships into the graph
• Network Analysis — Degree, closeness, and betweenness centrality calculations with visual scaling
• Search & Filter — Full-text search across node labels
• Data Persistence — Auto-saves to localStorage; export/import as JSON or PNG
• Kumu Import — Supports importing graphs from Kumu JSON format
• Dark Theme — Purpose-built dark UI for extended analysis sessions

Tech Stack

• React 19 + Vite 7
• Cytoscape.js (fcose layout, cxtmenu)
• Tailwind CSS 4
• OpenAI-compatible API (Ollama, or any cloud provider)

Getting Started

Prerequisites

• Node.js 18+
• (Optional) Ollama for local AI extraction

Development

npm install
npm run dev

The dev server starts at http://localhost:5173 with a proxy to Ollama at localhost:11434.

Production Build

npm run build
npm run preview

Docker

docker build -t link-analysis .
docker run -p 80:80 -v link-analysis-uploads:/app/server/uploads link-analysis

AI Entity Extraction

The AI extraction feature sends pasted text to an OpenAI-compatible endpoint and parses the structured response into graph nodes and edges.

1. Click the AI extraction button
2. Paste unstructured text (up to 50,000 characters)
3. Review proposed entities and relationships
4. Accept or reject individual items before committing to the graph

AI Configuration

Configure via the settings panel in the extraction modal:

Setting	Default
Provider	Ollama
Endpoint	/ollama/v1/chat/completions
Model	gpt-oss:120b
Temperature	0.1
Max Tokens	8192

Supports any OpenAI-compatible API — set an API key for cloud providers.

Project Structure

src/
├── ai/                  # AI service, prompts, response parsing
├── components/
│   ├── ai/              # Extraction modal & settings panel
│   ├── canvas/          # Graph canvas & overlay controls
│   ├── panels/          # Node/edge detail views & edit forms
│   └── sidebar/         # Node/edge forms, lists, legend
├── hooks/               # Cytoscape, AI extraction, analysis hooks
├── constants.js         # Enums, color maps, defaults
├── storage.js           # localStorage, export/import
├── cytoscape-styles.js  # Graph visual styling
└── kumu-import.js       # Kumu format conversion

License

ISC