2. The language understanding system of claim 1 , wherein the plurality of feature extractors are each located on different feature servers, and wherein the trained language understanding server is separate from the different feature servers.
2. The language understanding system of claim 1 , wherein the plurality of feature extractors are each located on different feature servers, and wherein the trained language understanding server is separate from the different feature servers. 4. The language understanding system of claim 2 , wherein the input features include domains, intents, and entities.