GM-RKB:2005 AdvancesInWSD

• (Mihalcea & Petersen, 2005) => Rada Mihalcea, Ted Pedersen. (2005). "Advances in Word Sense Disambiguation." Tutorial at ACL 2005.

Subject Headings: Word Sense Disambiguation, Word Sense Discrimination.

Quotes

Task Definition

• Word sense disambiguation is the problem of selecting a sense for a word from a set of predefined possibilities.
  • Sense Inventory usually comes from a dictionary or thesaurus.
  • Knowledge intensive methods, supervised learning, and (sometimes) bootstrapping approaches
• Word sense discrimination is the problem of dividing the usages of a word into different meanings, without regard to any particular existing sense inventory.
  • Unsupervised techniques

Unsupervised Word Sense Discrimination

• A class of methods that cluster words based on similarity of context
• Strong Contextual Hypothesis
  • (Miller and Charles, 1991): Words with similar meanings tend to occur in similar contexts
  • (Firth, 1957): “You shall know a word by the company it keeps.” …words that keep the same company tend to have similar meanings
• Only use the information available in raw text, do not use outside knowledge sources or manual annotations
• No knowledge of existing sense inventories, so clusters are not labeled with senses

References

	Author	volume	Date Value	title	type	journal	titleUrl	doi	note	year
2005 AdvancesInWSD	Rada Mihalcea Ted Pedersen			Advances in Word Sense Disambiguation.			http://www.d.umn.edu/~tpederse/Tutorials/ADVANCES-IN-WSD-ACL-2005.ppt