A Wordnet from the Ground Up

5.4. What Next? 181The derivational relations are an important part of the whole network. Instancesof derivational relations are often the only way of describing the meaning of adjectivalLUs. For future applications of plWordNet it is necessary to develop a more finegrainedsemantic description of derivationally motivated links.Much effort went into research on the various methods of automatic extraction oflexico-semantic relations and on the construction of the WNW system. A wordnetof a similar size, perhaps larger, might be constructed at the same cost without thesupport of automatic tools. The technology which we created, however, is ready to use;it opens interesting possibilities for further improvements and extensions. The latestversion of WNW (Section 4.5.4) was used consistently for several months. That effortbrought about a significant increase in the number of lemmas, LUs and instances oflexico-semantic relations. WNW also helps find inconsistencies and missing elementsin the plWordNet structure.A final point: much of the previous work on wordnet development has focussed onEnglish, a language which typologically differs significantly from Polish. No researchsimilar to our appears to have been published for other Slavic language. The lack ofapplicable comparable experience added to the workload.5.4 What Next?It has been not so much the project deadline as the depletion of funds that has promptedus to announce the completion of plWordNet, version 1.0. Our plans go much further,naturally. We perceive the construction of plWordNet as a continuous process. Its endcannot be easily predicted, given the amount of work – not to mention the fact thata complete wordnet is a moving target.We will gradually and systematically add new LUs to plWordNet using the WordNetWeaver system. The system of relations among verbs will be further developed. It isan open question whether to expand it inside plWordNet, for example by describingsubcategorisation frames and semantic selectional preferences in association with nounsin plWordNet, or to combine it with some other resource oriented toward the descriptionof verbs.We must begin to align plWordNet with other wordnets – PWN, GermaNet orBalkaNet are likely counterparts. We will also work toward making plWordNet a part ofthe Global WordNet Grid (Fellbaum and Vossen, 2007). Sometimes flying, sometimeswalking, but always steadily moving towards a large wordnet for Polish: this is ourplan. The pace, as expected, depends on funding.Other than the obvious goal of “growing” plWordNet, we see two directions offuture work: