Conferences ; Sampling; Language corpus; Sprachkorpus; Datensammlung; Data collection; Textkorpus (method.) ; Text corpus (method.) ; Corpus linguistics ; Automatische Lexikographie; Computer lexicography; Linguistic data processing (lexicography) ; Language statistics ; Needs assessment (method.) ; Validity (method.) ; Evaluation criterion (method.) ; Sprachdokumentation; Language documentation; Documentation (method.) ; German