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LdaCorpus

bixverse_methods::methods::lda

Struct LdaCorpus 

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pub struct LdaCorpus<F: BixverseFloat> { /* private fields */ }
Expand description

A corpus held in both orientations, with counts cast to the solver’s float.

The E-step walks documents and the M-step walks terms, so keeping both layouts turns each into a contiguous scan. Cast once here rather than per touch, since the solver revisits every non-zero on every iteration.

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impl<F: BixverseFloat + BixverseNumeric> LdaCorpus<F>

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pub fn new<T, U>( matrix: &CompressedSparseData2<T, U>, ) -> Result<Self, MethodsErrors>
where T: BixverseNumeric + ToPrimitive, U: BixverseNumeric,

Build a corpus from a documents x terms sparse matrix.

Accepts either orientation of compressed storage and re-expresses it, but the logical shape must already be documents x terms. A caller holding terms x documents wants CompressedSparseData2::transpose_and_convert first.

§Params
  • matrix - Documents x terms counts. Negative entries are rejected.
§Returns

The LdaCorpus, or an error if the matrix is empty or holds a negative or non-finite count.

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