06.08.2015 Views

A Wordnet from the Ground Up

A Wordnet from the Ground Up - School of Information Technology ...

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3.5. Sense Discovery by Clustering 99171 committee: {karanie punishing, leczenie treatment, prewencja prevention, profilaktykaprophylaxis, rozpoznawanie diagnosing, ujawnianie revealing, wykrywaniediscovering, zapobieganie preventing, zwalczanie fighting, ściganie pursuing,prosecuting} – a correct additional sense found196 committee: as aboveNext, two examples of committees and <strong>the</strong> generated word groups.• committee 57: {ciemność darkness, cisza silence, milczenie silence = not speaking}• LU group: {cisza, milczenie, ciemność, spokój quiet, bezruch immobility, samotnośćsolitude, pustka emptiness, mrok dimness, cichość silence (literary), zadumareverie, zapomnienie forgetting, nuda ennui, tajemnica secret, otchłań abyss,furkot whirr, skupienie concentration, cyngiel trigger, głusza wilderness, jasnośćbrilliance}• committee 69: {grota grotto, góra mountain, jaskinia cave, lodowiec glacier,masyw massif, rafa reef, skała rock, wzgórze hill}• LU group: {góra, skała, wzgórze, jaskinia, masyw, pagórek hillock, grota,wzniesienie elevation, skałka small rock, wydma dune, górka small mountain,płaskowyż plateau, podnóże foothill, lodowiec, wyspa island, wulkan volcano,pieczara cave, zbocze slope, ławica shoal}Finally, an example of a polysemous committee and <strong>the</strong> lemma group generated onthis basis. The group clearly consists of two separate parts: animals and zodiac signs.• committee 11: bestia beast, byk bull, lew lion, tygrys tiger• LU group: {lew, byk, tygrys, bestia, wodnik aquarius, koziorożec capricorn,niedźwiedź bear, smok dragon, skorpion scorpio, nosorożec rhinoceros, bliźniętwin, lampart leopard, bawół buffalo}The last examples clearly show <strong>the</strong> role of <strong>the</strong> committee in defining <strong>the</strong> mainsemantic axis of <strong>the</strong> LU group. Two general semantically different LUs in <strong>the</strong> samecommittee make it ambiguous between at least two senses. Such a committee resultsin inconsistent LU groups created <strong>from</strong> it. Thus <strong>the</strong> initial selection of committees iscrucial for <strong>the</strong> quality of <strong>the</strong> whole algorithm, and <strong>the</strong> quality of CBC depends directlyon <strong>the</strong> MSR applied.Although <strong>the</strong> experiments performed with CBC gave interesting and promisingresults, we achieved too low accuracy for using <strong>the</strong> output (i.e. <strong>the</strong> groups of words)

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