大约有 10,000 项符合查询结果（耗时：0.0362秒） [XML]
Can someone give an example of cosine similarity, in a very simple, graphical way?
...counter2[k] for k in all_items]
return vector1, vector2
def cosim(v1, v2):
dot_product = sum(n1 * n2 for n1, n2 in zip(v1, v2) )
magnitude1 = math.sqrt(sum(n ** 2 for n in v1))
magnitude2 = math.sqrt(sum(n ** 2 for n in v2))
return dot_product / (magnitude1 * magnitude2)
l1 = ...
How to tell which commit a tag points to in Git?
...ev=7 --tags will show you something like the following:
f727215 refs/tags/v2.16.0
56072ac refs/tags/v2.17.0
b670805 refs/tags/v2.17.1
250ed01 refs/tags/v2.17.2
share
|
improve this answer
...
How to write WinForms code that auto-scales to system font and dpi settings?
...ionConfigurationSection>
<add key="DpiAwareness" value="PerMonitorV2" />
</System.Windows.Forms.ApplicationConfigurationSection>
This PerMonitorV2 is new since Windows 10 Creators Update:
DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2
Also known as Per Monitor v2. An advancemen...
What is __future__ in Python used for and how/when to use it, and how it works
...
Or is it like saying "Since this is python v2.7, use that different 'print' function that has also been added to python v2.7, after it was added in python 3. So my 'print' will no longer be statements (eg print "message" ) but functions (eg, print("message", options)....
Linux - Install redis-cli only
...s's answer, you can also install the Redis CLI by running
$ git clone -b v2.8.7 git@github.com:antirez/redis.git
$ make -C redis install redis-cli /usr/bin
This will build the Redis CLI and toss the binary into /usr/bin. To anyone who uses Docker, I've also built a Dockerfile that does this for ...
How can I brew link a specific version?
...: Aug 26 2014 15:14:01)
Copyright (c) 1997-2014 The PHP Group
Zend Engine v2.4.0, Copyright (c) 1998-2014 Zend Technologies
$ brew unlink php54
$ brew switch php55 5.5.16
$ php --version
PHP 5.5.16 (cli) (built: Sep 9 2014 14:27:18)
Copyright (c) 1997-2014 The PHP Group
Zend Engine v2.5.0, Cop...
Loop through all nested dictionary values?
...
def print_dict(v, prefix=''):
if isinstance(v, dict):
for k, v2 in v.items():
p2 = "{}['{}']".format(prefix, k)
print_dict(v2, p2)
elif isinstance(v, list):
for i, v2 in enumerate(v):
p2 = "{}[{}]".format(prefix, i)
print_dict...
How do I run only specific tests in Rspec?
...superbly documented here. See the --tag option section for details.
As of v2.6 this kind of tag can be expressed even more simply by including the configuration option treat_symbols_as_metadata_keys_with_true_values, which allows you to do:
describe "Awesome feature", :awesome do
where :awesome i...
What is copy-on-write?
...f):
return ValueProxy(self.subject)
v1 = ValueProxy(Value('foo'))
v2 = v1.clone() # shares the immutable Value object between the copies
assert v1.subject is v2.subject
v2.write('bar') # creates a new immutable Value object with the new state
assert v1.subject is not v2.subject
...
java: (String[])List.toArray() gives ClassCastException
... it can't determine what type of array to create.
use
toArray(new String[v2.size()]);
which allocates the right kind of array (String[] and of the right size)
share
|
improve this answer
...