2020
DOI: 10.1177/1354068820974609
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Comparing computational and non-computational methods in party position estimation: Finland, 2003–2019

Abstract: It is often claimed that computational methods for examining textual data give good enough party position estimates at a fraction of the costs of many non-computational methods. However, the conclusive testing of these claims is still far from fully accomplished. We compare the performance of two computational methods, Wordscores and Wordfish, and four non-computational methods in estimating the political positions of parties in two dimensions, a left-right dimension and a progressive-conservative dimension. O… Show more

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Cited by 4 publications
(7 citation statements)
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References 40 publications
(81 reference statements)
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“…Wordscores was developed in political science to infer ideologies from manifestoes. In a recent study of political parties’ positions, this programme was found to outperform another computational tool, Wordfish, which correlated less closely with non-computational methods and required a very large amount of data for calibration (Koljonen et al, 2022).…”
Section: Methodsmentioning
confidence: 99%
“…Wordscores was developed in political science to infer ideologies from manifestoes. In a recent study of political parties’ positions, this programme was found to outperform another computational tool, Wordfish, which correlated less closely with non-computational methods and required a very large amount of data for calibration (Koljonen et al, 2022).…”
Section: Methodsmentioning
confidence: 99%
“…They are widely considered a convenient and sufficiently valid source of revealed party positions (Ruedin and Morales, 2019). Manifestos can be analysed either manually or through automated approaches, which is ultimately a choice between reliability and validity (Koljonen et al, 2020). In this case, I opted for a manual coder approach since the task carried out here is oriented toward uncovering meanings and interpreting arguments.…”
Section: Research Design Data and Methodsmentioning
confidence: 99%
“…There is a long research tradition in political science that focuses on estimating policy or ideological positions of political parties from political texts on a common scale (e.g., Koljonen et al, 2020;Lowe et al, 2011). This line of research on is typically focused on the spatial positions of the political parties on a left-right dimension or a liberal-conservative dimension, the assumption being that "a set of party positions, whether a cross-section or a time series, can be located on some (continuously defined) metric scale" (Lowe et al, 2011, p. 125).…”
mentioning
confidence: 99%
“…The most used data source on the policy positions of different political actors, cross-sectionally and longitudinally, is text (Lowe et al, 2011). Policy positions are latent variables that cannot be directly observed from texts (Koljonen et al, 2020).…”
mentioning
confidence: 99%
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