Yuepeng Shi

Key information extraction from visually rich documents can produce schema-valid field values without showing which page region supports them or whether schema and cross-field constraints hold. VGA-KIE binds each field value, locatable evidence, verification state, failure reason and repair history into one field-level state, and releases a repaired result only after evidence is relinked and the same constraints are re-checked. In a paired comparison sharing one frozen candidate cache with LayTokenLLM-8B direct extraction, mean Field-F1 rose from 93.49 to 97.65, with 4,475 of 4,720 target fields released.

Key information extraction from visually rich documents can produce schema-valid field values without showing which page region supports them or whether schema and cross-field constraints hold. VGA-KIE binds each field value, locatable evidence, verification state, failure reason and repair history into one field-level state, and releases a repaired result only after evidence is relinked and the same constraints are re-checked. In a paired comparison sharing one frozen candidate cache with LayTokenLLM-8B direct extraction, mean Field-F1 rose from 93.49 to 97.65, with 4,475 of 4,720 target fields released.