Beyond simple noise reduction, what is the primary technical challenge addressed by 'deduplication' during data preprocessing for an agent's knowledge base?

Beyond simple noise reduction, which handles exact duplicates or corrupted data, the primary technical challenge addressed by deduplication for an agent's knowledge base is identifying and reconciling semantically equivalent information that is represented differently. This means recognizing that distinct pieces of data, while not identical in their textual or structural form, convey the exact same underlying fact, concept, or entity. For instance, "New York City," "....