Sentiment Lexica from Paired Comparisons
Christoph Dalitz, Katrin E. Bednarek · 2016
The method of paired comparison is an established method in psychology for assigning ranks or inherent score values to different stimuli. This article describes how this method can be used for building a sentiment lexicon and for extending the lexicon with arbitrary new words. An initial lexicon with n=200 German words is created from a two-fold all-pair comparison experiment with ten different test persons. A cross-validation experiment suggests that only two-fold log_2(n)+8=16 comparisons are necessary to estimate the score of a new, yet unknown word. We make the new lexicon available and compare it with the corpus-based lexica SentiWS and SenticNet.