node2vec_cpu.cc 1.32 KB
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/**
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 *  Copyright (c) 2021 by Contributors
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 * @file graph/sampling/node2vec_cpu.cc
 * @brief DGL sampler - CPU implementation of node2vec random walk with OpenMP
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 */

#include <dgl/array.h>
#include <dgl/base_heterograph.h>
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#include <utility>

#include "node2vec_randomwalk.h"

namespace dgl {

using namespace dgl::runtime;
using namespace dgl::aten;

namespace sampling {

namespace impl {

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template <DGLDeviceType XPU, typename IdxType>
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std::pair<IdArray, IdArray> Node2vec(
    const HeteroGraphPtr hg, const IdArray seeds, const double p,
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    const double q, const int64_t walk_length, const FloatArray &prob) {
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  TerminatePredicate<IdxType> terminate = [](IdxType *data, dgl_id_t curr,
                                             int64_t len) { return false; };

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  return Node2vecRandomWalk<XPU, IdxType>(
      hg, seeds, p, q, walk_length, prob, terminate);
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}

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template std::pair<IdArray, IdArray> Node2vec<kDGLCPU, int32_t>(
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    const HeteroGraphPtr hg, const IdArray seeds, const double p,
    const double q, const int64_t walk_length, const FloatArray &prob);
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template std::pair<IdArray, IdArray> Node2vec<kDGLCPU, int64_t>(
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    const HeteroGraphPtr hg, const IdArray seeds, const double p,
    const double q, const int64_t walk_length, const FloatArray &prob);
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};  // namespace impl

};  // namespace sampling

};  // namespace dgl