Merge pull request !1055 from jiangjinsheng/vm_floor

Merge pull request !1060 from fary86/fix_assign_target_not_parameter

Merge pull request !1034 from SanjayChan/dropout

Merge pull request !1076 from JesseKLee/btree

Merge pull request !1044 from jinyaohui/clean_pylint_test

Merge pull request !1071 from guozhijian/update_modele_ge

Merge pull request !1054 from yangzhenzhang/add-slice-shape-for-param-info

Merge pull request !953 from fary86/add_submodule_id_for_log_interface

Merge pull request !1063 from guozhijian/revert-merge-713-master

Merge pull request !1057 from chenweifeng/matmul

Merge pull request !1046 from wandongdong/master

Merge pull request !1048 from panyifeng/index_to_switch_case

Merge pull request !1040 from zhangdengcheng/master

Merge pull request !996 from Xiaoda/supporting-virtualdataset-has-three-inputs

Merge pull request !370 from chenweifeng/unsorted_segment_sum

Merge pull request !994 from chenweifeng/broadcast_unequal_dims

Merge pull request !1021 from chenweifeng/broadcast_grad

Merge pull request !1029 from chenweifeng/lstm_ops_check

Merge pull request !948 from chenweifeng/logsoftmax

Merge pull request !991 from chenfei_mindspore/reuse-parameter-by-python-parameter

Merge pull request !1052 from zhangzheng/simple

Merge pull request !713 from 李鸿章/summary_record

Fixed the bug that mean aggregator argument can not pass to base class and add attention head for GAT

Merge pull request !1051 from yao_yf/auto_parallel_reshape_reconstruct

Merge pull request !864 from sunsuodong/cpu_op_register

Merge pull request !1028 from Chong/memctl