Zero-shot text classification lets you label text without task-specific training data by reframing classification as a natural language reasoning task. Using the facebook/bart-large-mnli model via Hugging Face's pipeline API, you can classify text into candidate labels, enable multi-label predictions, and tune hypothesis templates to improve accuracy. The approach works because MNLI-trained models evaluate whether a label statement is entailed by the input text, making label wording and hypothesis phrasing critical to performance.
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