Graph Neural Network-Based Intelligent Investment Matching System: Technical Practice Connecting Entrepreneurs and Investors

This article analyzes the Investor-Recommender project, an intelligent matching system for startups and investors built using GraphSAGE and GATv2 graph neural network technologies, covering end-to-end implementation from data preprocessing and model training to a full-stack web application. The project adopts a modular design, including multi-model architectures (GraphSAGE hybrid model, GATv2 single model, VC/angel investor dual model), and is productized via Django+React, aiming to solve the problems of low efficiency and limited coverage in traditional investment matching.

In the startup ecosystem, traditional investment matching relies on personal connections and exhibitions, which are low in efficiency and limited in coverage. With the maturity of Graph Neural Network (GNN) technology, its ability to effectively capture relationships between nodes provides a new solution for intelligent investment matching—automatically identifying potential matching relationships between startups and investors through algorithms.

The project relies on Crunchbase data (e.g., organizations.csv, investors.csv, investments.csv, etc.). The preprocessing process includes: 1. Relationship matrix construction (investor-startup interactions, co-investment relationships, etc.); 2. Text feature extraction (converting company/investor descriptions into vectors using pre-trained models); 3. Feature engineering refinement (building investor preference profiles and startup feature files).

GraphSAGE learns node embeddings by sampling and aggregating neighbor node features. Implementation steps: 1. Graph structure construction (converted into a format usable by PyTorch Geometric); 2. KNN similarity calculation (cosine similarity based on text embeddings); 3. Model training (supports standard mode and Optuna hyperparameter optimization); 4. Inference application.

GATv2 introduces an attention mechanism to dynamically assign neighbor weights and supports multi-head attention. The dual-model architecture (VC/angel investor) is designed for the decision logic differences between the two types of entities: VCs focus on market size, financial indicators, etc.; angel investors focus on founder vision, technological innovation, etc. Both are trained independently and can perform joint inference.

The backend uses Django to provide RESTful APIs (supporting company file management, real-time recommendations, etc.); the frontend uses React to build an interactive interface (including company information entry, personalized recommendation lists, matching degree visualization, etc.). Deployment requires configuring environment variables, and the frontend and backend are seamlessly integrated.

Application Value: It is valuable for entrepreneurs (quickly finding investors), investors (discovering high-quality projects), and platforms (value-added services). Limitations: Dependence on Crunchbase data authorization, cold start issues, and mainly covering the U.S. market. Improvement Directions: Multi-source data fusion, time-series modeling, enhanced interpretability, and A/B testing framework.

Investor-Recommender is a complete engineering solution that demonstrates the application of GNN technology in business scenarios. It provides practical experience for developers and indicates the trend of intelligent financing ecosystems for the industry. In the future, it can integrate multi-modal signals to provide more precise and interpretable matching services.