Abstract
Entity linking (EL) on tabular data often produces many ambiguous cell annotations that are costly to review. We present KOALA-UI, a lightweight web interface for inspecting and refining EL results on spreadsheets and CSV-like tables. KOALA-UI provides table navigation, cell-level candidate panels, color-coded scores, simple filtering, and in-place edits with export. To enable reuse across backends, KOALA-UI consumes a compact JSON schema and responses compatible with the W3C Entity Reconciliation specification, allowing integration with potentially any EL backend. We illustrate KOALA-UI with the Crocodile EL framework and demonstrate a human-in-the-loop (HITL) workflow. In addition, we report a preliminary user study, a real business use case, and a validation of pipeline execution through TAO–a workflow engine, where Crocodile was integrated as a module.