Linguistically Annotated Learner Corpora: Aspects of a Layered Linguistic Encoding and Standardized Representation

Linguistically annotated corpora that are stored in standardized digital form can be a valuable source of empirical insight. They can help verify linguistic generalizations and support the formulation of new hypotheses. The linguistic annotation of such corpora often is crucial for their effective exploration from a linguistic perspective. The annotation essentially serves as an index to the linguistic classes and phenomena realized in the corpus (cf., e.g., Meurers 2005).