aksnzhy commented on a change in pull request #13392: add csr sample op
URL: https://github.com/apache/incubator-mxnet/pull/13392#discussion_r236920554
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File path: src/operator/contrib/dgl_graph.cc
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@@ -35,6 +35,833 @@
namespace mxnet {
namespace op {
+typedef int64_t dgl_id_t;
+
+////////////////////////////// Graph Sampling ///////////////////////////////
+
+unsigned int seed = 123;
+
+/*
+ * This is used for BFS traversal
+ */
+struct ver_node {
+ dgl_id_t vertex_id;
+ int level;
+};
+
+/*
+ * ArrayHeap is used to sample elements from vector
+ */
+class ArrayHeap {
+ public:
+ // ctor & dctor
Review comment:
it means constructor and de-constructor .. It's my personal habit..
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