Useful Resources

This table provides a comparison of services offered by 13 annotation agencies. In addition to rates and service features, you can compare information regarding the annotation workers' quality level and checking system.

If you're thinking about choosing an annotation vendor, here's some basic information you should know beforehand.

For those dealing with edge cases (exceptional scenarios) in annotation, we offer an approach to handle these case.

For those facing rework or quality issues in annotation. It provides useful insights and best practices for improving your annotation approach.