Glossary Library

Technical GlossaryNatural Language Processing

Text Deduplication

A process that removes identical or near-duplicate text samples from a dataset to improve training and evaluation quality.

Text deduplication is one of the quiet but high-impact quality steps in large-scale corpus preparation. Repeated copies of the same or almost identical text can create bias, memorization, and misleading evaluation. It is especially critical in LLM pretraining, retrieval indexing, and test-set hygiene.

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Generative AI

A class of AI systems capable of generating new content such as text, images, audio, video, or code.

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Duplicate Record

A repeated data record that represents the same real-world entity or event more than once.

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Outlier

An observation or value that deviates noticeably from the general pattern of the dataset.