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numpy matrix vector multiplication [duplicate]
...t; b = a.T
>>> np.dot(a, b)
array([[35, 9, 10],
[ 9, 3, 4],
[10, 4, 6]])
>>> np.inner(a, b)
array([[29, 12, 19],
[ 7, 4, 5],
[ 8, 5, 6]])
Rarer options for edge cases
If you have tensors (arrays of dimension greater than or equal to one)...
Weird behavior with objects & console.log [duplicate]
...
answered May 2 '14 at 13:25
zzzzBovzzzzBov
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...
What does %>% mean in R [duplicate]
...dth Petal.Length Petal.Width Species
1 5.1 3.5 1.4 0.2 setosa
2 4.9 3.0 1.4 0.2 setosa
3 4.7 3.2 1.3 0.2 setosa
4 4.6 3.1 1.5 0.2 setosa
5 5.0 ...
Ora-00257 错误处理一列 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...查看权限
ll .bash_profile
-rw--rw--- 1 oracle oinstall 529 10鏈?24 20:18 /home/oracle/.bash_profile
有问题。修改权限
chmod 775 /home/oracle/.bash_profile
进入ORLACE
sqlplus /as sysdba
SQL> select * from v$log;
GROUP# THREAD# SEQUENCE# BYTES...
error LNK2019: 无法解析的外部符号_socket，该符号在函数 中被引用 - c++1...
...gt;NetClient.obj : error LNK2019: 无法解析的外部符号 _closesocket@4，该符号在函数 _main 中被引用
1>NetClient.obj : error LNK2019: 无法解析的外部符号 _inet_ntoa@4，该符号在函数 _main 中被引用
1>NetClient.obj : error LNK2019: 无法解析的外部符号 ...
HashSet vs. List performance
...
841
A lot of people are saying that once you get to the size where speed is actually a concern that...
How can I undo git reset --hard HEAD~1?
...d file1
1 files changed, 1 insertions(+), 0 deletions(-)
create mode 100644 file1
$ echo "added new file" > file2
$ git add file2
$ git commit -m 'added file2'
Created commit f6e5064: added file2
1 files changed, 1 insertions(+), 0 deletions(-)
create mode 100644 file2
$ git reset --hard HE...
How do I revert an SVN commit?
...
454
Both examples must work, but
svn merge -r UPREV:LOWREV . undo range
svn merge -c -REV . undo...
What is the LD_PRELOAD trick?
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427
If you set LD_PRELOAD to the path of a shared object, that file will be loaded before any othe...
C# elegant way to check if a property's property is null
... |
edited Sep 1 '19 at 8:43
GSerg
68.8k1616 gold badges133133 silver badges277277 bronze badges
answere...