1. 02 Sep, 2021 1 commit
  2. 30 Jul, 2020 1 commit
  3. 28 Mar, 2020 1 commit
  4. 02 Mar, 2020 1 commit
    • Minjie Wang's avatar
      [Feature] Improve sampling speed; Better pickle/unpickle; other fixes (#1299) · 5dd35580
      Minjie Wang authored
      * 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
      5dd35580
  5. 09 Feb, 2020 1 commit
    • xiang song(charlie.song)'s avatar
      [Optimization][KG] Several optimizations on DGL-KG (#1233) · ffe58983
      xiang song(charlie.song) authored
      * Several optimizations on DGL-KG:
      1. Sorted positive edges for sampling which can reduce random
         memory access during positive sampling
      2. Asynchronous node embedding update
      3. Balanced Relation Partition that gives balanced number of
         edges in each partition. When there is no cross partition
         relation, relation embedding can be pin into GPU memory
      4. tunable neg_sample_size instead of fixed neg_sample_size
      
      * Fix test
      
      * Fix test and eval.py
      
      * Now TransR is OK
      
      * Fix single GPU with mix_cpu_gpu
      
      * Add app tests
      
      * Fix test script
      
      * fix mxnet
      
      * Fix sample
      
      * Add docstrings
      
      * Fix
      
      * Default value for num_workers
      
      * Upd
      
      * upd
      ffe58983
  6. 31 Jan, 2020 1 commit
    • Quan (Andy) Gan's avatar
      [Feature] Random Walk for 0.5 (#1209) · a9dabcc7
      Quan (Andy) Gan authored
      * trying to refactor IndexSelect
      
      * partial implementation
      
      * add index select and assign for floats as well
      
      * move to random choice source
      
      * more updates
      
      * fixes
      
      * fixes
      
      * more fixes
      
      * adding python impl
      
      * fixes
      
      * unit test
      
      * lint
      
      * lint x2
      
      * lint x3
      
      * update metapath2vec
      
      * debugging performance
      
      * still debugging for performance
      
      * tuning
      
      * switching to succvec
      
      * redo
      
      * revert non-uniform sampler to use vector
      
      * still not fast
      
      * why does this crash with OpenMP???
      
      * because there was a data race!!!
      
      * add documentations and remove assign op
      
      * lint
      
      * lint x2
      
      * lol what have i done
      
      * lint x3
      
      * fix and disable gpu testing
      
      * bugfix
      
      * generic random walk
      
      * reorg the random walk source code
      
      * Update randomwalks.h
      
      * Update randomwalks_cpu.cc
      
      * rename file
      
      * move internal function to anonymous ns
      
      * reorg & docstrings
      
      * constant restart probability
      
      * docstring fix
      
      * more commit
      
      * random walk with restart, tested
      
      * some fixes
      
      * switch to using NDArray for choice
      
      * massive fix & docstring
      
      * lint x?
      
      * lint x??
      
      * fix
      
      * export symbols
      
      * skip gpu test
      
      * addresses comments
      
      * replaces another VecToIdArray
      
      * add randomwalks.h to include
      
      * replace void * with template
      a9dabcc7
  7. 05 Jan, 2020 1 commit
    • Da Zheng's avatar
      [KG] PBG's way of constructing negative edges (#1159) · 1022d5d6
      Da Zheng authored
      * attach positive.
      
      * add neg_deg_sample.
      
      * add comment.
      
      * add neg_deg_sample for eval.
      
      * change the edge sampler.
      
      * rename edge sampler in KG.
      
      * allow specifying chunk size and negative sample size separately.
      
      * fix bugs in KG.
      
      * add check in sampler.
      
      * add more checks.
      
      * fix
      
      * add comment.
      
      * add comments.
      1022d5d6
  8. 31 Dec, 2019 2 commits
  9. 27 Dec, 2019 1 commit
  10. 24 Dec, 2019 1 commit
    • xiang song(charlie.song)'s avatar
      [Feature Improvement]Edge Sampler w and w/o replacement (#1116) · 41f8a162
      xiang song(charlie.song) authored
      
      
      * Add weight based edge sampler
      
      * Can run, edge weight work.
      TODO: test node weight
      
      * Fix node weight sample
      
      * Fix y
      
      * Update doc
      
      * Fix syntex
      
      * Fix
      
      * Fix GPU test for sampler
      
      * Fix test
      
      * Fix
      
      * Refactor EdgeSampler to act as class object not function that it
      can record its own private states.
      
      * clean
      
      * Fix
      
      * Fix
      
      * Fix run bug on kg app
      
      * update
      
      * update test
      
      * test
      
      * Simply python API and fix some C code
      
      * Fix
      
      * Fix
      
      * Fix syntex
      
      * Fix
      
      * Update API description
      
      * add replacement for edge sampler
      
      * Now edge sampler support replacement and no-replacement
      
      * Fix
      
      * Fix
      
      * change kg/app to use edge sampler with replacement config
      
      * Update replacement algo
      
      * Fix syntax
      
      * Update
      
      * Update
      Co-authored-by: default avatarDa Zheng <zhengda1936@gmail.com>
      41f8a162
  11. 16 Dec, 2019 1 commit
    • xiang song(charlie.song)'s avatar
      [Feature] No-Uniform Edge Sampler (#1087) · 632a9af8
      xiang song(charlie.song) authored
      * Add weight based edge sampler
      
      * Can run, edge weight work.
      TODO: test node weight
      
      * Fix node weight sample
      
      * Fix y
      
      * Update doc
      
      * Fix syntex
      
      * Fix
      
      * Fix GPU test for sampler
      
      * Fix test
      
      * Fix
      
      * Refactor EdgeSampler to act as class object not function that it
      can record its own private states.
      
      * clean
      
      * Fix
      
      * Fix
      
      * Fix run bug on kg app
      
      * update
      
      * update test
      
      * test
      
      * Simply python API and fix some C code
      
      * Fix
      
      * Fix
      
      * Fix syntex
      
      * Fix
      
      * Update API description
      632a9af8
  12. 03 Oct, 2019 1 commit
  13. 02 Oct, 2019 1 commit
  14. 01 Oct, 2019 1 commit
  15. 26 Sep, 2019 1 commit
    • Da Zheng's avatar
      Improve edge sampler (#881) · 1db697ec
      Da Zheng authored
      * optimizer for sampling all negative edges.
      
      * allow to disable checking false negative.
      
      * fix lint.
      
      * fix docstring.
      
      * fix for comment.
      
      * add comments.
      1db697ec
  16. 23 Sep, 2019 1 commit
  17. 11 Sep, 2019 1 commit
    • Da Zheng's avatar
      [Feature] add PBG's negative edge sampling. (#836) · 4297e6d6
      Da Zheng authored
      * PBG negative edge sampler.
      
      * add a positive edge to make it regular, handle last batch.
      
      * exclude all positive edges in the parent graph.
      
      * just uniformly sample negative nodes.
      
      * fix lint.
      
      * shuffle one-side nodes of positive edges.
      
      * just uniformly sample negative nodes.
      
      * change the data type.
      
      * address comment.
      
      * remove commented code.
      4297e6d6
  18. 23 Aug, 2019 1 commit
    • Quan (Andy) Gan's avatar
      [Hetero][RFC] Heterogeneous graph Python interfaces & Message Passing (#752) · 52d4535b
      Quan (Andy) Gan authored
      * moving heterograph index to another file
      
      * node view
      
      * python interfaces
      
      * heterograph init
      
      * bug fixes
      
      * docstring for readonly
      
      * more docstring
      
      * unit tests & lint
      
      * oops
      
      * oops x2
      
      * removed node/edge addition
      
      * addressed comments
      
      * lint
      
      * rw on frames with one node/edge type
      
      * homograph with underlying heterograph demo
      
      * view is not necessary
      
      * bugfix
      
      * replace
      
      * scheduler, builtins not working yet
      
      * moving bipartite.h to header
      
      * moving back bipartite to bipartite.h
      
      * oops
      
      * asbits and copyto for bipartite
      
      * tested update_all and send_and_recv
      
      * lightweight node & edge type retrieval
      
      * oops
      
      * sorry
      
      * removing obsolete code
      
      * oops
      
      * lint
      
      * various bug fixes & more tests
      
      * UDF tests
      
      * multiple type number_of_nodes and number_of_edges
      
      * docstring fixes
      
      * more tests
      
      * going for dict in initialization
      
      * lint
      
      * updated api as per discussions
      
      * lint
      
      * bug
      
      * bugfix
      
      * moving back bipartite impl to cc
      
      * note on views
      
      * fix
      52d4535b
  19. 22 Aug, 2019 1 commit
    • Da Zheng's avatar
      [Feature] Add edge sampling for link prediction (#780) · 66971c1a
      Da Zheng authored
      * add edge sampler.
      
      * add test and run.
      
      * add negative sampling.
      
      * remap the edge subgraph vid.
      
      * negative graph excludes edges of positive edgs.
      
      * remove print.
      
      * avoid sampling NodeFlow when expand_factor or num_hops is 0.
      
      * fix a bug when excluding nodes in negative graph.
      
      * support multigraph.
      
      * exclude positive edges.
      
      * fix memory leak.
      
      * return subgraph object directly.
      
      * fix many problems.
      
      * add comments.
      
      * address comments
      66971c1a
  20. 07 Aug, 2019 1 commit
    • Quan (Andy) Gan's avatar
      [NodeFlow] Non-uniform neighbor sampling (#711) · 16061925
      Quan (Andy) Gan authored
      * nonuniform sampler
      
      * unit test
      
      * test on out neighbors
      
      * error checks
      
      * lint
      
      * fix
      
      * clarification
      
      * use macro switcher
      
      * use empty array for uniform sampling
      
      * oops
      
      * Revert "oops"
      
      This reverts commit a11f9ae707aaeb67fb5921c887a17d3711d5b04a.
      
      * Revert "use empty array for uniform sampling"
      
      This reverts commit 8526ce4cade89f2c1b09a08aca8830375ebafb31.
      
      * re-reverting
      
      * use a method
      16061925
  21. 31 Jul, 2019 1 commit
    • Quan (Andy) Gan's avatar
      [Refactor] C random number generator (#729) · e9e587b6
      Quan (Andy) Gan authored
      * rng refactor
      
      * fix bugs
      
      * unit test
      
      * remove setsize
      
      * lint
      
      * fix test
      
      * use explicit instantiation instead of inlining
      
      * stricter test
      
      * use tvm solution
      
      * moved python interface to dgl.random
      
      * lint
      
      * address comments
      
      * make getthreadid an inline function
      e9e587b6
  22. 23 Jul, 2019 1 commit
    • Minjie Wang's avatar
      [Refactor] Use object system for all CAPIs (#716) · 67dc1197
      Minjie Wang authored
      * WIP: using object system for graph
      
      * c++ side refactoring done; compiled
      
      * remove stale apis
      
      * fix bug in DGLGraphCreate; passed test_graph.py
      
      * fix bug in python modify; passed utest for pytorch/cpu
      
      * fix lint
      
      * address comments
      67dc1197
  23. 17 Jul, 2019 1 commit
    • Minjie Wang's avatar
      [Refactor] Separating graph and sparse matrix operations (#699) · b0d9e7aa
      Minjie Wang authored
      * WIP: array refactoring
      
      * WIP: implementation
      
      * wip
      
      * most csr part
      
      * WIP: on coo
      
      * WIP: coo
      
      * finish refactoring immutable graph
      
      * compiled
      
      * fix undefined ndarray copy bug; add COOToCSR when coo has no data array
      
      * fix bug in COOToCSR
      
      * fix bug in CSR constructor
      
      * fix bug in in_edges(vid)
      
      * fix OutEdges bug
      
      * pass test_graph
      
      * pass test_graph
      
      * fix bug in CSR constructor
      
      * fix bug in CSR constructor
      
      * fix bug in CSR constructor
      
      * fix stupid bug
      
      * pass gpu test
      
      * remove debug printout
      
      * fix lint
      
      * rm biparate grpah
      
      * fix lint
      
      * address comments
      
      * fix bug in Clone
      
      * cpp utests
      b0d9e7aa
  24. 11 Jun, 2019 1 commit
  25. 08 Jun, 2019 1 commit
  26. 07 Jun, 2019 1 commit
  27. 21 May, 2019 1 commit
    • Minjie Wang's avatar
      [Refactor] Immutable graph index (#543) · 605b5185
      Minjie Wang authored
      * WIP
      
      * header
      
      * WIP .cc
      
      * WIP
      
      * transpose
      
      * wip
      
      * immutable graph .h and .cc
      
      * WIP: nodeflow.cc
      
      * compile
      
      * remove all tmp dl managed ctx; they caused refcount issue
      
      * one simple test
      
      * WIP: testing
      
      * test_graph
      
      * fix graph index
      
      * fix bug in sampler; pass pytorch utest
      
      * WIP on mxnet
      
      * fix lint
      
      * fix mxnet unittest w/ unfortunate workaround
      
      * fix msvc
      
      * fix lint
      
      * SliceRows and test_nodeflow
      
      * resolve reviews
      
      * resolve reviews
      
      * try fix win ci
      
      * try fix win ci
      
      * poke win ci again
      
      * poke
      
      * lazy multigraph flag; stackoverflow error
      
      * revert node subgraph test
      
      * lazy object
      
      * try fix win build
      
      * try fix win build
      
      * poke ci
      
      * fix build script
      
      * fix compile
      
      * add a todo
      
      * fix reviews
      
      * fix compile
      605b5185
  28. 08 Apr, 2019 1 commit
    • Da Zheng's avatar
      [Feature] Create shared memory graph store. (#468) · bfdd1eaa
      Da Zheng authored
      * accelerate gcn_ns.
      
      * add timing.
      
      * run infer with whole graph.
      
      * distributed gcn_ns.
      
      * reconstruct gcn_ns.
      
      * minor fix.
      
      * change graphsage_cv for numa.
      
      * fix #OMP threads.
      
      * accelerate graphsage_cv.
      
      * fix a weird bug.
      
      * add profiler in graphsage_cv.
      
      * accelerate graphsage_cv.
      
      manually aggregate neighbors' embeddings with pull.
      
      * load csr directly in gcn_ns_sc.
      
      * parallel sort for graph index.
      
      * Revert "parallel sort for graph index."
      
      This reverts commit 86fe2c7117fe5e56b0d481b39849c258b166945b.
      
      * run gcn_ns_sc on GPUs.
      
      * acc gcn_cv_sc.
      
      * change gcn_cv for numa.
      
      * fix gcn_cv to use numa and gpu.
      
      * improve graphsage_cv to use numa and gpu.
      
      * improve gcn_ns.
      
      * improve graphsage_cv.
      
      * init shared memory graph store.
      
      * fix.
      
      * enable init ndata.
      
      * improve tests.
      
      * add bidirectional communication.
      
      * link to rt.
      
      * fix compilation error.
      
      * fix shared memory init.
      
      * use MessageQueue for inter-process communication.
      
      * reconstruct immutable graph csr.
      
      * fix gcn.
      
      * load csr to shared memory.
      
      * fix minor bugs.
      
      * add comments.
      
      * refactor SharedMemory.
      
      * fix bugs in ImmutableGraph.
      
      * create CSR graph from shared memory.
      
      * add more test for loading a csr graph.
      
      * terminate graph store properly.
      
      * allow initializing ndata in the graph store server.
      
      * use RPC for inter-process communication.
      
      * a script for loading a graph.
      
      * allow customizing port.
      
      * list all ndata and edata.
      
      * support dtype.
      
      * reorganize SharedMemoryGraphStore.
      
      * fix ndata shape.
      
      * reconstruct gcn_ns.
      
      * print info.
      
      * set omp in gcn_ns.
      
      * reset sampling examples.
      
      * fix lint.
      
      * fix lint.
      
      * reset gcn.
      
      * disable shared memory in windows.
      
      * fix.
      
      * fix.
      
      * reset changes.
      
      * revert nodeflow changes.
      
      * fix cmake.
      
      * fix test.
      
      * fix test.
      
      * fix test.
      
      * fix test.
      
      * add comments.
      
      * fix test.
      
      * move vector out.
      
      * fix lint.
      
      * fix lint.
      
      * move SharedMemory.
      
      * update cmake.
      
      * update comment.
      
      * fix comments.
      
      * Revert "update cmake."
      
      This reverts commit 592445e37077f70a6e3f2e5245f9a3d086b04f3b.
      
      * update cmake.
      
      * add comments.
      
      * rename.
      
      * change the comment.
      
      * fix a bug.
      
      * rename.
      
      * add comments.
      
      * add comments.
      
      * add init_edata.
      
      * rewrite memory alloc.
      
      * move vector to CSR.
      
      * fix.
      
      * init data.
      
      * Revert "init data."
      
      This reverts commit 2b217b9553911b7dd84a9f1d9b68430b5aa18e23.
      
      * init data.
      
      * init new columns correctly.
      bfdd1eaa
  29. 29 Mar, 2019 2 commits
    • Chao Ma's avatar
      [RPC] add C++ RPC infrastructure and distributed sampler (#465) · 5d494c62
      Chao Ma authored
      * add C++ rpc infrastructure and distributed sampler
      
      * update
      
      * update lint
      
      * update lint
      
      * update lint
      
      * update
      
      * update
      
      * update
      
      * updare
      
      * update
      
      * update
      
      * update
      
      * update serialize and unittest
      
      * update serialize
      
      * lint
      
      * update
      
      * update
      
      * update
      
      * update
      
      * update
      
      * update
      
      * update unittest
      
      * put Finalize() to __del__
      
      * update unittest
      
      * update
      
      * delete buffer in Finalize
      
      * update unittest
      
      * update unittest
      
      * update unittest
      
      * update unittest
      
      * update
      
      * update
      
      * fix small bug
      
      * windows socket impl
      
      * update API
      
      * fix bug in serialize
      
      * fix bug in serialzie
      
      * set parent graph
      
      * update
      
      * update
      
      * update
      
      * update
      
      * update
      
      * update
      
      * fix lint
      
      * fix lint
      
      * fix
      
      * fix windows compilation error
      
      * fix windows error
      
      * change API to lower-case
      
      * update test
      
      * fix typo
      
      * update
      
      * add SamplerPool
      
      * add SamplerPool
      
      * update
      
      * update test
      
      * update
      
      * update
      
      * update
      
      * update
      
      * add example
      
      * update
      
      * update
      5d494c62
    • Quan (Andy) Gan's avatar
      [Model][Feature] PinSage & Random Walk with Restart (#453) · 6066fee9
      Quan (Andy) Gan authored
      * random walk traces generation
      
      * remove outdated comments
      
      * oops put in the wrong place
      
      * explicit inline
      
      * moving rand_r to util
      
      * pinsage-like model on movielens
      
      * the code runs now
      
      * support cuda
      
      * using readonly graph
      
      * moving random walk to public function
      
      * per-thread seed and openmp support
      
      * pinsage-like model on movielens
      
      * the code runs now
      
      * support cuda
      
      * using readonly graph
      
      * using C random walk
      
      * removing profile decorators
      
      * param initialization
      
      * no grad
      
      * leaky relu fixes everything
      
      * train and save
      
      * WIP
      
      * WIP
      
      * WIP
      
      * seems to work
      
      * evaluation output
      
      * swapping order of val/test and train
      
      * debug
      
      * hyperparam tuning
      
      * prior/training dataset split changes
      
      * random walk reorg
      
      * random walk with restart
      
      * signed comparison fix
      
      * migrating random walk to nodeflow
      
      * Revert "migrating random walk to nodeflow"
      
      This reverts commit f2565347cced7c912a58a529b257c033d9f375b7.
      
      * add README and remove dataset
      
      * new endpoint
      
      * lint
      
      * lint x2
      
      * oops forgot test
      
      * including bpr - better for baseline
      
      * addressing fixes
      
      * throwing random walks out from SamplerOp class
      
      * forgot to move RandomWalk; why did this even work?
      
      * removing legacy garbage
      
      * add todo
      
      * address comments
      
      * stupid bug fix
      
      * call ndarrayvector converter to handle traces
      6066fee9
  30. 05 Mar, 2019 2 commits
  31. 03 Mar, 2019 1 commit
    • GaiYu0's avatar
      [Feature]Uniform layer-wise sampler (#416) · fb4246e5
      GaiYu0 authored
      * migrate to node-flow
      
      * uniform layer sampler test cases
      
      * more test cases
      
      * documentations
      
      * fix lint errors
      
      * fix lint errors
      
      * fix lint errors
      
      * iota
      
      * add asnumpy
      
      * requested changes
      
      * fix indptr error
      
      * fix lint errors
      
      * requested changes & fix lint errors
      
      * fix lint errors
      
      * fix LayerSampler unit test
      fb4246e5
  32. 28 Feb, 2019 1 commit
    • Ziyue Huang's avatar
      [Model][MXNet] neighbor sampling & skip connection & control variate & graphsage (#322) · 7e30382e
      Ziyue Huang authored
      * neighbor sampling draft
      
      * val/test acc
      
      * control variate draft
      
      * control variate
      
      * update
      
      * fix new_history
      
      * maintain aggregated history while updating new history
      
      * preprocess the first layer, change push to pull
      
      * update
      
      * fix subg_degree
      
      * nodeflow
      
      * clear
      
      * readme
      
      * doc and unittest for self loop
      
      * address comments
      
      * rename
      
      * update
      
      * fix
      
      * Update node_flow.py
      
      * Update node_flow.py
      7e30382e
  33. 25 Feb, 2019 1 commit
    • Minjie Wang's avatar
      [WIP] [NN] Refactor NN package (#406) · 565f0c88
      Minjie Wang authored
      * refactor graph conv
      
      * docs & tests
      
      * fix lint
      
      * fix lint
      
      * fix lint
      
      * fix lint script
      
      * fix lint
      
      * Update
      
      * Style fix
      
      * Fix style
      
      * Fix style
      
      * Fix gpu case
      
      * Fix for gpu case
      
      * Hotfix edgesoftmax docs
      
      * Handle repeated features
      
      * Add docstring
      
      * Set default arguments
      
      * Remove dropout from nn.conv
      
      * Fix
      
      * add util fn for renaming
      
      * revert gcn_spmv.py
      
      * mx folder
      
      * fix wierd bug
      
      * fix mx
      
      * fix lint
      565f0c88
  34. 20 Feb, 2019 3 commits
  35. 19 Feb, 2019 1 commit
    • Da Zheng's avatar
      [Feature] add NodeFlow API (#361) · f370e628
      Da Zheng authored
      * sample layer subgraphs.
      
      * fix.
      
      * fix.
      
      * add layered subgraph.
      
      * fix lint.
      
      * fix.
      
      * fix tutorial.
      
      * fix.
      
      * remove copy_to_parent.
      
      * add num_layers
      
      * move sampling code to sampler.cc
      
      * fix.
      
      * move subgraph construction out.
      
      * Revert "move subgraph construction out."
      
      This reverts commit 24b3d13b0d8ed5f91847ea75a7674ee8f7d45cff.
      
      * change to NodeFlow.
      
      * use NodeFlow in Python.
      
      * use NodeFlowIndex.
      
      * add node_mapping and edge_mapping.
      
      * remove unnecessary code in SSE tutorial.
      
      * Revert "remove unnecessary code in SSE tutorial."
      
      This reverts commit 093f0413d5fa2e63ca5f80c46c80a126a9fb720c.
      
      * fix tutorial.
      
      * move to node_flow.
      
      * update gcn cv updater.
      
      * import NodeFlow.
      
      * update.
      
      * add demo code for vanilla control variate sampler.
      
      * update.
      
      * update.
      
      * add neighbor sampling.
      
      * return flow offsets.
      
      * update node_flow.
      
      * add test.
      
      * fix sampler.
      
      * fix graph index.
      
      * fix a bug in sampler.
      
      * fix map_to_layer_nid and map_to_flow_eid.
      
      * fix apply_flow.
      
      * remove model code.
      
      * implement flow_compute.
      
      * fix a bug.
      
      * reverse the csr physically.
      
      * add mini-batch test.
      
      * add mini batch test.
      
      * update flow_compute.
      
      * add prop_flows
      
      * run on specific nodes.
      
      * test copy
      
      * fix a bug in creating frame in NodeFlow.
      
      * add init gcn_cv_updater.
      
      * fix a minor bug.
      
      * fix gcn_cv_updater.
      
      * fix a bug.
      
      * fix a bug in NodeFlow.
      
      * use new h in gcn_cv_updater.
      
      * add layer_in_degree and layer_out_degree.
      
      * fix gcn_cv_updater for gpu.
      
      * temp fix in NodeFlow for diff context.
      
      * allow enabling/disabling copy back.
      
      * add with-updater option.
      
      * fix a bug in computing degree.
      
      * add with-cv option.
      
      * rename and add comments.
      
      * fix lint complain.
      
      * fix lint.
      
      * avoid assert.
      
      * remove assert.
      
      * fix.
      
      * fix.
      
      * fix.
      
      * fix.
      
      * fix the methods in NodeFlow.
      
      * fix lint.
      
      * update SSE.
      
      * remove gcn_cv_updater.
      
      * correct comments for the schedulers.
      
      * update comment.
      
      * add map_to_nodeflow_nid
      
      * address comment.
      
      * remove duplicated test.
      
      * fix int.
      
      * fix comments.
      
      * fix lint
      
      * fix.
      
      * replace subgraph with NodeFlow.
      
      * move view.
      
      * address comments.
      
      * fix lint.
      
      * fix lint.
      
      * remove static_cast.
      
      * fix docstring.
      
      * fix comments.
      
      * break SampleSubgraph.
      
      * move neighbor sampling to sampler.cc
      
      * fix comments.
      
      * rename.
      
      * split neighbor_list.
      
      * address comments.
      
      * fix.
      
      * remove TODO.
      f370e628