LAMSAS in the Netherlands


Fieldworker effect

Our methods are very sensitive to variations in the way the data was recorded.

A clustering below (map left) shows an almost exact division according to fieldworkers (map right): two clusters for Guy Lowman, two clusters for Raven McDavid, one for the remaining fieldworkers. (This last single cluster does not indicate agreement between data from the remaining fieldworkers.)

grouping:      fieldworker + worksheet + community: 570 locations
                   (two locations merged because of identical coordinates)
map (left):    clustering into five groups, using Ward's Method
data:          raw phonetic strings, no lexical variants
method:        Levenshtein