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Version: 0.96

operators.candidates.extractor.EmptySpanExtractor

class operators.candidates.extractor.EmptySpanExtractor(field, col_suffix=None)

A SpanExtractor that yields a single empty span from (0,0) for each row

This can be used to create a candidate set with a one-to-one mapping with documents, which can serve as a starting point for labeling GT manually.