resample.hpp

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// toolboxes/stats/include/nk/stats/resample/resample.hpp
//
// Random sampling and resampling utilities.
 
#pragma once
 
#include <memory_resource>
#include <nk/value/span.hpp>
#include <nk/value/value.hpp>
 
namespace nk {

 namespace ops { class RngContext; } }
 
namespace nk::stats {

Value randsample(::nk::ops::RngContext &rng, int N, int K, bool with_replacement, const Value &weights,
                 std::pmr::memory_resource *mr = nullptr);

Value datasample(::nk::ops::RngContext &rng, const Value &X, int K, int dim, bool with_replacement,
                 const Value &weights, std::pmr::memory_resource *mr = nullptr);
 
// NOTE: bootstrp / jackknife are not exposed as Engine-free C++ cores — they
// must invoke a user statistic via the engine, so the logic lives inline in
// their register half (bundle/.../resample/resample_reg.cpp).

Value combnk(int N, int K,
             std::pmr::memory_resource *mr = nullptr);

Value combnk(Span<const double> v, int K,
             std::pmr::memory_resource *mr = nullptr);
 

} // namespace nk::stats