WSD


  1. Without consulting a dictionary, enumerate word senses for the noun web. Use either a flat organization or a hierarchy, as you feel most appropriate.

  2. Consult any English dictionary other than WordNet, and consult WordNet. Compare and contrast the different characterizations of the senses for web. Include specific reference to how different resources (including your answer to the previous question) treat homonymy and polysemy.

  3. In Manning and Schuetze section Section 7.3.4, the constraint known as "one sense per discourse" (Yarowsky 1995) is stated as: "The sense of a target word is highly consistent within any given document". (You knew that already from having read the chapter, though, right??) Do exercise 7.9, which asks you to explore the validity of that constraint, particularly with regard to different types of ambiguity such as homonymy versus polysemy. Instead of constructing examples, I encourage you to do Web searching and find examples.

Possibly of interest, but not required

  • Ted Pedersen has released a variety of WSD software packages, if you want to play around with some WSD algorithms.