Journal
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume 112, Issue 35, Pages 10837-10844Publisher
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1512221112
Keywords
State of the Union; text analysis; networks; natural language processing; American history
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Funding
- Interdisciplinary Center for Theory and Empirics at Columbia University
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This study reveals that the entry into World War I in 1917 indexed the decisive transition to the modern period in American political consciousness, ushering in new objects of political discourse, a more rapid pace of change of those objects, and a fundamental reframing of the main tasks of governance. We develop a strategy for identifying meaningful categories in textual corpora that span long historic durees, where terms, concepts, and language use changes. Our approach is able to account for the fluidity of discursive categories over time, and to analyze their continuity by identifying the discursive stream as the object of interest.
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