Module polars_arrow::legacy::kernels::take_agg

kernels that combine take and aggregations.

Functions

• online_variance
  Numerical stable online variance aggregation See: Welford, B. P. (1962). “Note on a method for calculating corrected sums of squares and products”. Technometrics. 4 (3): 419–420. doi:10.2307/1266577. JSTOR 1266577. and: Ling, Robert F. (1974). “Comparison of Several Algorithms for Computing Sample Means and Variances”. Journal of the American Statistical Association. 69 (348): 859–866. doi:10.2307/2286154. JSTOR 2286154.
• take_agg_bin_iter_unchecked^⚠
  Take kernel for single chunk and an iterator as index.
• take_agg_bin_iter_unchecked_no_null^⚠
  Take kernel for single chunk and an iterator as index.
• take_agg_no_null_primitive_iter_unchecked^⚠
  Take kernel for single chunk without nulls and an iterator as index.
• take_agg_primitive_iter_unchecked^⚠
  Take kernel for single chunk and an iterator as index.
• take_agg_primitive_iter_unchecked_count_nulls^⚠
  Take kernel for single chunk and an iterator as index.
• take_max_bool_iter_unchecked_no_nulls^⚠
  Take kernel for single chunk and an iterator as index.
• take_max_bool_iter_unchecked_nulls^⚠
  Take kernel for single chunk and an iterator as index.
• take_min_bool_iter_unchecked_no_nulls^⚠
  Take kernel for single chunk and an iterator as index.
• take_min_bool_iter_unchecked_nulls^⚠
  Take kernel for single chunk and an iterator as index.
• take_var_no_null_primitive_iter_unchecked^⚠
  Take kernel for single chunk and an iterator as index.
• take_var_nulls_primitive_iter_unchecked^⚠
  Take kernel for single chunk and an iterator as index.