Title (deu)

Comparing Lexical Usage in Political Discourse across Diachronic Corpora


Andreas Baumann


Most diachronic studies on either lexico-semantic change or political language usage are based on individual or structurally similar
corpora. In this paper, we explore ways of studying the stability (and changeability) of lexical usage in political discourse across two
corpora which are substantially different in structure and size. We present a case study focusing on lexical items associated with political
parties in two diachronic corpora of Austrian German, namely a diachronic media corpus (AMC) and a corpus of parliamentary records
(ParlAT), and measure the cross-temporal stability of lexical usage over a period of 20 years. We conduct three sets of comparative
analyses investigating a) the stability of sets of lexical items associated with the three major political parties over time, b) lexical
similarity between parties, and c) the similarity between the lexical choices in parliamentary speeches by members of the parties
vis-`a-vis the media’s reporting on the parties. We employ time series modeling using generalized additive models (GAMs) to compare
the lexical similarities and differences between parties within and across corpora. The results show that changes observed in these
measures can be meaningfully related to political events during that time.

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