These are (kind of) dyadic, but mostly state-level data, used internally for doing stuff with the UCDP armed conflict data
ucdp_acdA data frame with 5652 observations on the following 15 variables.
conflict_ida conflict identifier, not to be confused with an episode identifier (which I don't think UCDP offers)
yeara numeric vector for the year
gwno_athe Gleditsch-Ward state code for the state on side A of the armed conflict
gwno_a_2ndthe Gleditsch-Ward state code for the state that actively supported side A of the armed conflict with the use of troops
gwno_bthe Gleditsch-Ward state code for the actor on side B of the armed conflict
gwno_b_2ndthe Gleditsch-Ward state code for the state that actively supported side B of the armed conflict with the use of troops
incompatibilitya character vector for the main conflict issue ("territory", "government", "both")
intensity_levela numeric vector for the intensity level in the calendar year (1 = minor (25-999 deaths), 2 = war (>1,000 deaths))
type_of_conflicta character vector for the type of conflict ("extrasystemic", "interstate", "intrastate", "II"). "II" is a simple abbreviation of "internationalized intrastate"
start_datea date of the first battle-related death in the conflict, not to be confused with the first battle-related death of the episode
start_precthe level of precision for start_date
start_date2a date of the first battle-related death in the episode, not to be confused with the first battle-related death of the conflict
start_prec2the level of precision for start_date2
ep_enda dummy variable for whether the conflict episode ended in the calendar year of observation
ep_end_datethe episode end date, if applicable
The data-raw directory on the project's Github will show how I processed
the multiple strings for when there are multiple states on a given side.
Gleditsch, Nils Petter; Peter Wallensteen, Mikael Eriksson, Margareta Sollenberg, and Havard Strand. 2002. "Armed Conflict 1946–2001: A New Dataset." Journal of Peace Research 39(5): 615–637.
Davies, Shawn, Therése PEttersson, Margareta Sollenberg, and Magnus Öberg. 2025. "Organized violence 1989–2024, and the challenges of identifying civilian victims." Journal of Peace Research 62(4): 1223--1240.