Heterogeneous Data
Combining data of different types (text, image, sensor) or from multiple domains, which poses integration and governance challenges.
Definition
Multimodal and multi-source datasets require harmonization of formats, schemas, and quality controls. Governance must define unified metadata standards, ensure consistent preprocessing (normalization, encoding), and manage lineage across pipelines. Addressing semantic mismatches and missing-value patterns is critical to maintain data integrity and fairness when training multimodal AI systems.
Real-World Example
An autonomous-vehicle project fuses LIDAR point clouds, camera images, and GPS streams. A data-governance team builds a multimodal schema registry, enforces timestamp synchronization rules, and tracks provenance so that any detection errors can be traced back to the exact sensor data version and preprocessing steps.
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