Using the same clustering algorithm over this feature set, @ X achieves a clustering accuracy (as measured via cluster purity) of 70.2%, compared to 71.96% for Almuhareb and Poesio.
when @ X is used to harvest a further set of attribute nouns for X, via web queries of the form "the P * of X " (where P ∈ @X), then @ X augmented with this additional set of attributes (like hands for surgeon) produces a larger space of 7,183 features.