Tansa maintains a complete, continuous log of system, usage, and can present this data in several ways.
This allows Tansa's customers to monitor their system's performance over time and see exactly which improvements have been made to their textual output.
Your Tansa Statistics web pages will show you which errors are made, and which of them are corrected. Recurring problems and style issues are highlighted so that you can deal with them.
Tansa Metrics lets you analyze the output from the system and makes it possible to fine-tune your custom dictionaries for the best possible results.