GitLab

* improve speed

* fix bugs

* upd reg test

* improve performance of sample_neighbors

* some more improve

* test script

* benchmarks

* multi process

* update more tests

* WIP

* adding two API for state saving

* add create from state

* upd test

* missing file

* wip: pickle/unpickle

* more c apis

* find the problem of empty data array

* add null array; pickling speed is bad

* still bad perf

* still bad perf

* wip

* fix the pickle speed test; now everything looks good

* minor fix

* bugfix

* some lint fix

* address comments

* more fix

* fix lint

* add utest for random.choice

* add utest for dgl.rand_graph

* fix cpp utests

* try fix ci

* fix bug in TF backend

* upd choice docstring

* address comments

* upd

* try fix compile

* add comment

* WIP: working on random choices

* light slice

* basic CPU impl

* add python binding; fix CreateFromCOO and CreateFromCSR returning unitgraph

* simple test case works

* fix bug in slicing probability array

* fix bug in getting the correct relation graph

* fix bug in creating placeholder graph

* enable omp

* add cpp test

* sample topk

* add in|out_subgraph

* try fix lint; passed all unittests

* fix lint

* fix msvc compile; add sorted flag and constructors

* fix msvc

* coosort

* COOSort; CSRRowWiseSampling; CSRRowWiseTopk

* WIP: remove DType in CSR and COO; Restrict data array to be IdArray

* fix all CSR ops for missing data array

* compiled

* passed tests

* lint

* test sampling out edge

* test different per-relation fanout/k values

* fix bug in random choice

* finished cpptest

* fix compile

* Add induced edges

* add check

* fixed bug in sampling on hypersparse graph; add tests

* add ascending flag

* in|out_subgraph returns subgraph and induced eid

* address comments

* lint

* fix