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How to calculate a logistic sigmoid function in Python?
...4]: 0.61253961344091512
If you are concerned about performances continue reading, otherwise just use expit.
Some benchmarking:
In [5]: def sigmoid(x):
....: return 1 / (1 + math.exp(-x))
....:
In [6]: %timeit -r 1 sigmoid(0.458)
1000000 loops, best of 1: 371 ns per loop
In [7]: %time...
Pythonic way to combine FOR loop and IF statement
... than implicit.
Simple is better than complex.
Flat is better than nested.
Readability counts.
The Pythonic way of getting the sorted intersection of two sets is:
>>> sorted(set(a).intersection(xyz))
[0, 4, 6, 7, 9]
Or those elements that are xyz but not in a:
>>> sorted(set(...
Sublime Text 3 how to change the font size of the file sidebar?
...3.2.1, a 4k display and a Mac. Tab titles and the sidebar are difficult to read with default ST3 settings. I used the menus Sublime Text -> Preferences -> Settings which opens two files: Preferences.sublime-settings--Default and Preferences.sublime-settings--User.
You can only edit the User f...
Why doesn't Git ignore my specified file?
...gitignore.
If that doesn’t work, then it’s likely that your file is already tracked by Git. You can confirm this through the output of git status. If the file is not listed in the “Untracked files” section, then it is already tracked by Git and it will ignore the rule from the .gitignore fi...
C++, variable declaration in 'if' expression
...
I think you already hinted at the issue. What should the compiler do with this code?
if (!((1 == 0) && (bool a = false))) {
// what is "a" initialized to?
The "&&" operator is a short-circuit logical AND. That mean...
Using TortoiseSVN via the command line
...
As a tip, if you already have Tortoise installed, there is no need to reinstall. You can simply open up the original installer .msi file, and instead of choosing "Uninstall" you can choose "Modify." It will just update your current Tortoise ins...
How to disable textarea resizing?
...f you have other tags you must use resize: none, for complete explanations read This Link.
For example, for a p tag you must set overflow property with a value that is not visible and then set resize, none, both, vertical, horizontal.
...
tinyxml XML解析库下载（tinyxml2.h 和 tinyxml2.cpp） - 源码下载 - 清泛...
... itself, and will apply normalization
and entity translation if actually read. Can also store (and memory
manage) a traditional char[]
*/
class StrPair
{
public:
enum {
NEEDS_ENTITY_PROCESSING = 0x01,
NEEDS_NEWLINE_NORMALIZATION = 0x02,
COLLAPSE_WHITESPACE ...
What's the difference between KeyDown and KeyPress in .NET?
...able unicode characters will also fire KeyPress events. I have an app that reads data inserted by a barcode reader into a textbox and the reader includes non-printable unicode characters.
– Jeff LaFay
Feb 7 '13 at 18:35
...
JavaScript hard refresh of current page
...am pretty sure this won't reload all external resources. You would have to read through all the a, link, script and img elements and append a random query string to the end of each external reference after the hard reload. Or, do that on the server.
– Doug Neiner
...