HBrain: A Knowledge Graph System Simulating Human Semantic Memory Networks with Large Models

HBrain is a knowledge graph system based on large language models, simulating the working mechanism of the human brain's semantic memory network. It can automatically extract entities and relationships from documents to build structured knowledge graphs and provide intelligent question-answering capabilities. It aims to solve the problems of traditional knowledge graph construction relying on manual annotation, high cost, and difficulty in scaling, exploring a new direction of using large models' cognitive abilities to simulate human memory mechanisms.

The human brain's memory system is a complex and sophisticated network structure. When reading or learning, it automatically extracts key concepts, establishes connections to form a semantic memory network, and efficiently supports association and reasoning. Traditional knowledge graph construction relies on a lot of manual annotation and rule definition, which is costly and difficult to scale. The core idea of the HBrain project is: Can we use the powerful understanding ability of large language models to automatically simulate the process of the human brain constructing semantic memory?

HBrain adopts a three-layer architecture:

1. Document Understanding Layer: Deeply parse input documents, use large models' context understanding ability to identify core concepts, entities and their attributes, focusing on semantic understanding rather than pattern matching;
2. Relationship Extraction Layer: Analyze semantic connections in documents, automatically infer explicit (e.g., "A is the founder of B") and implicit (contextual inference) logical relationships;
3. Graph Construction and Storage Layer: Organize extracted entities and relationships into structured knowledge graphs, use graph databases for storage, supporting efficient graph traversal, querying, and associative reasoning.

HBrain's key technical features include:

• Semantic-level understanding: Different from traditional grammar-level knowledge graphs, it uses large models to capture the deep meaning and subtle differences of concepts;
• Dynamic knowledge update: Supports incremental updates, intelligently judges the relationship between new knowledge and existing knowledge, performs merging, updating or conflict detection, and maintains the consistency and timeliness of the graph;
• Intelligent question-answering capability: Provides natural language question-answering based on the knowledge graph, supporting simple factual queries and complex multi-hop reasoning questions.

HBrain's application scenarios and value:

• Enterprise knowledge management: Automatically build enterprise knowledge bases, convert scattered documents into structured knowledge networks, and improve employees' knowledge retrieval efficiency;
• Academic research assistance: Help researchers sort out core concepts and theoretical contexts of literature, and discover domain knowledge structures and development trends;
• Intelligent customer service and dialogue systems: Support more intelligent dialogue systems and provide accurate and coherent knowledge-based answers.

Technical challenges in implementing HBrain:

1. Entity disambiguation: The same concept may have different meanings in different contexts, requiring accurate identification and distinction;
2. Relationship extraction accuracy: Relationships in documents are often implicit, requiring the model to have strong reasoning capabilities;
3. Knowledge graph quality control: Automatically constructed graphs have errors and redundancies, requiring effective quality assessment and cleaning mechanisms.

HBrain future development directions:

• Multimodal knowledge fusion: Integrate multiple modal knowledge such as text, images, and audio;
• Temporal knowledge modeling: Introduce the time dimension to support temporal reasoning and trend analysis;
• Personalized knowledge services: Provide customized services based on users' knowledge backgrounds and interests.

HBrain demonstrates the great potential of large language models in the field of knowledge engineering. By simulating the semantic memory mechanism of the human brain, it provides a more intelligent and automated knowledge graph construction solution. This is not only a technological progress but also a beneficial exploration of human cognitive mechanisms.