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tech.v3.libs.smile.data

Bindings to the smile DataFrame system.

column->smile-column

(column->smile-column col)

Convert a dataset column to a smile vector.

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dataset->smile-dataframe

(dataset->smile-dataframe ds)

Convert a dataset to a smile dataframe.

This operation may clone columns if they aren't backed by java heap arrays. See tech.v3.dataset/ensure-array-backed.

It is important to note that smile supports a subset of the functionality in tech.v3.dataset. One difference is smile columns have string column names and have no missing set.

Returns a smile.data.DataFrame

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smile-column->column

(smile-column->column smile-vec {:keys [unify-strings?], :or {unify-strings? true}})(smile-column->column smile-vec)

Convert a smile column into a tmd column. Note that missing sets are not supported by smile.

Options:

  • :unify-strings - defaults to true - Use per-column string tables to reduce the memory overead of the Smile dataframe.
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smile-dataframe->dataset

(smile-dataframe->dataset df options)(smile-dataframe->dataset df)

Convert a smile datarame into a dataset.

Options:

  • :unify-strings - defaults to true - Use per-column string tables to reduce the memory overead of the Smile dataframe.
  • :key-fn - Use a key-fn to convert the smile column names.
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