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CS583, UIC

CS583, UIC

But before we go further

Let us discuss Opinion Words or Phrases (also called polar words, opinion bearing words, etc). E.g.,

Positive: beautiful, wonderful, good, amazing,

Negative: bad, poor, terrible, cost someone an arm and a leg (idiom).

They are instrumental for opinion mining (obviously)

Three main ways to compile such a list:

Manual approach: not a bad idea, only an one-time effort

Corpus-based approaches

Dictionary-based approaches

Important to note:

Some opinion words are context independent (e.g., good).

Some are context dependent (e.g., long).

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