Synthetic data for text embedders yields sparse, task-localized MTEB gains and cross-task trade-offs, not broad robust improvement.
In MTEB, every task is reformulated as an em- bedding task where the only requirement is that the model produces a vector (embedding) for each text input
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Understanding the Influence of Synthetic Data for Text Embedders
Synthetic data for text embedders yields sparse, task-localized MTEB gains and cross-task trade-offs, not broad robust improvement.