Inverted index and pointing

- [[document]]   [[observation]]

• The document is a location, and the observation vector is created by the observations at that location.
  • One specific example of an observation is the appearance of the word
  • One specific example of a location is the document ID
  • inverted index
  • Mapping observations to locations
  • Change the observation being generated from a location to a function that generates a location from an observation in the opposite direction.
  • Feel like making $P(X|Y)$ from $P(Y|X)$ see Bayes’ theorem.
• A function that returns a location for some input is [pointing at
• Document ID is discrete

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