In order to let computers to work for us, they must understand data: not just the grammar and the syntax, but the real meaning of things.

KEES (Knowledge Exchange Engine Service) proposes some specifications to describe a domain knowledge in order to make it tradeable and shareable.

KEES allows to formalize and license:

• how to collect the right data,
• how much you can trust in your data,
• what new information you can deduct from the collected data,
• how to answer specific questions using data

A.I. and humans can use these know hows to reuse and enrich existing knowledge. KEES is a Semantic Web Application.