A Wordnet from the Ground Up

46 Chapter 2. Building a Wordnet CoreRelationNo. instancesNouns Verbs Adjectives AllHypernymy 3966 315 134 4415Holonymy 938 0 0 938Meronymy 868 1 0 869Troponymy 0 0 0 0Antonymy 1035 147 1629 2811Conversion 27 62 2 91Relatedness 888 2378 1233 4499Pertainymy 1002 190 304 1496Fuzzynimy 389 41 425 855Table 2.5:Instances of lexico-semantic relations in the core plWordNetTable 2.3 completes the account of the polysemy of plWordNet. We show thedistribution of different numbers of senses among lemmas of different parts of speech.The core plWordNet includes mainly general LUs with vaguely specified meaning.That is why the ratio of large synsets is relatively high – see Table 2.4 – especiallytaking into account the assumed definition of synset.Table 2.5 rounds out the detailed picture of the core plWordNet. It shows thestatistics of instances of lexico-semantic relations. The numbers of holonymy andmeronymy pairs differ because we set the value of reversibility to “−” (see the definitionon page 26). So, inverse pairs are not created automatically: the linguist must makean explicit decision.The tables we show in this section form a snapshot of plWordNet at a very specialtime of switching from the purely manual work to the semi-automatic expansion ofplWordNet (based on the WordNet Weaver system, Section 4.5). Because all changesintroduced in the second phase were verified by the linguists, there is no substantial differencein quality and trustworthiness between the plWordNet elements created beforeand after that time. Nevertheless, a comparison of the data presented in this sectionand the data shown in Section 5.2 for the final expanded version of plWordNet, offeran interesting comparison of the two different wordnet construction methods.