We therefore use an existing multilingual lexical resource (Lefever, 2009) to develop a large, artificial parallel corpus containing semantically disambiguated polysemous words, and use it to calculate the maximum contribution that parallel corpora can make towards WPSD under ideal conditions, when all other processing steps are 100% accurate and therefore do not introduce any noise to the process.
the quality of proto-synsets is only as good as the quality of word alignment, not worse.