[FEA] Support Time Filtering in Hop 0 During Temporal Sampling #5263
Description
Currently, hop 0 vertices are allowed to select any edge during sampling. However, this conflicts with the PyG API, especially when performing edge-based sampling, since the API allows for overrides in hop 0. Without support for hop 0 filtering, the accuracy of edge-based sampling in cuGraph-PyG will probably worse than the accuracy in native PyG.
Supporting this involves the following changes to the API:
- Allow specifying a "time override" for each seed in hop 0
- When a time override is specified, use those times as the constraints for edge selection in hop 0. After hop 0, the overrides should be ignored.