sample采样方法咨询

您好，我现在有个需求。就是根据节点的某种feature，采样相同feature的其他节点。默认的实现只包括根据节点的node_type采样相同类型的其他节点。如果想根据节点的feature来采样的话（比如根据node_sparse_feature），是否能提供下实现的思路呢？谢谢

The issue names no files, tests, or entry points; begin by locating Euler’s existing node_type-based sampling implementation and its feature representation. Define the desired feature-matching behavior and verify it with sampling tests, but the issue provides no acceptance criteria or test location.

Written by the indexing model from the issue text.