Clinical language processing requires a deep understanding of language technologies including language engineering, computational linguistics and conventional linguistics.
HLA have staff with expertise in all these disciplines. It is from this background that it has been able to build the most proficient language technology in the world.
HLA have the philosophy that the most accurate language processing arises from a wellspring of knowledge about the contexts of the material under analysis. Importantly, the technologists methods must recognise that that knowledge is ever growing and so must be captured into the ongoing processes.
This has lead HLA to develop the paradigm of Knowledge Discovery and Knowledge Reuse in a continuous process of integrating knowledge from the moment it is acquired into all subsequent processing.
A simple example is the case of spelling corrections that the moment they are acquired, they are integrated into the spelling corrector to not only represent the actual error, but other likely errors that could occur due to the first error. This is second-order learning of being ready for the consequences of immediately acquired knowledge.