MCTD-KG: A Multi-Source Heterogeneous Knowledge Graph for Materials Science

MCTD-KG is a 1.4 MB knowledge graph in JSON format, created by Peize Li and last updated on May 25, 2026. It is designed for complex material question answering by integrating multiple heterogeneous data sources. The dataset is shared under a CC-BY-4.0 license on figshare.

Use Cases

• Train question-answering models based on integrated material knowledge.
• Benchmark information retrieval systems for heterogeneous scientific data.
• Develop knowledge graph reasoning applications for materials science.

Strengths

• The dataset is a structured knowledge graph, which suggests explicit relationships between entities.
• It is shared under a permissive CC-BY-4.0 license, facilitating reuse and distribution.

Limitations

• The dataset is small at 1.4 MB, which may limit the scope of knowledge covered.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

figshare

Freshness

Last updated 2026-05-25 08:55:04; freshness should be verified.