pq_size parameter setting about song HOT 2 OPEN

The graph construction runs with a single thread by default. If you would like to parallel it, feel free to call graph->add and data->add concurrently. Alternatively, you could construct graph with HNSW or any other library and plug the graph into it---since SONG mainly focuses on the searching part. We no longer maintain the ground truth files. You could compute it and enumerate the search budget for the query to get the curve.

from song.

Ok.

So how to plug the graph contructed by HNSW for SONG to use for later searching.

And, for graph data stored in bfsg.graph, does it stored in CSR format?

What kind of data layout it stored this graph actually?

from song.