Inverted index and pointing
https://gyazo.com/48c68d1cfc69e044baaafc7bedd53621
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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