data_corpus_MPexamples: Manifesto Project example manifestos and gold-standard segmentation

Description

Two datasets derived from Appendix 2 of Klingemann et al. (2006), which provides worked examples of the Manifesto Project quasi-sentence coding scheme.

data_corpus_MPexamples is a two-document corpus containing the full source texts of the Liberal-SDP Alliance 1983 UK election manifesto and the New Zealand National Party 1972 election manifesto, reconstructed by joining the quasi-sentences from the gold-standard annotation.

data_corpus_MPexamplesseg is the corresponding gold-standard segmented corpus, produced by converting the Manifesto Project's human-coded quasi-sentences via as_qlm_coded() with qlm_segment = TRUE. It is marked as a gold standard (is_gold = TRUE) and can be passed directly to qlm_compare() alongside output from qlm_segment() to compute Krippendorff's alpha for unitizing.

Usage

data_corpus_MPexamples
data_corpus_MPexamplesseg

Arguments

Format

data_corpus_MPexamples: A corpus with 2 documents and the following document-level variables:

country: Character. Country of origin: "UK" or "NZ".
party: Character. Party name: "Liberal-SDP Alliance" or "National Party".
year: Integer. Election year: 1983 or 1972.

data_corpus_MPexamplesseg: A segmented corpus with 178 quasi-sentences (107 Liberal-SDP, 71 NZ National Party) and the following document-level variables:

docid: Character. Source document identifier ("Liberal_SDP_1983" or "NZ_NP_1972").
segid: Integer. Quasi-sentence index within the source document.
char_start: Integer. Start character position in the source text.
char_end: Integer. End character position in the source text.
manifesto: Character. Manifesto Project manifesto label ("Liberal-SDP 1983" or "NP 1972").
country: Character. Country of origin: "UK" or "NZ".
per: Integer. Manifesto Project policy category code.

An object of class corpus (inherits from character) of length 178.

References

Klingemann, H. D., Volkens, A., Bara, J., Budge, I., & McDonald, M. D. (2006). Mapping Policy Preferences II: Estimates for Parties, Electors, and Governments in Eastern Europe, European Union, and OECD 1990--2003. Oxford University Press.

Examples

Run this code

if (requireNamespace("quanteda", quietly = TRUE)) {
  # Inspect the source texts
  summary(data_corpus_MPexamples)

  # Subset to one manifesto
  quanteda::corpus_subset(data_corpus_MPexamples, country == "NZ")

  # Gold-standard segmentation for the NZ manifesto
  quanteda::corpus_subset(data_corpus_MPexamplesseg,
                          quanteda::docvars(data_corpus_MPexamplesseg,
                                           "docid") == "NZ_NP_1972")
}