大约有 19,000 项符合查询结果(耗时:0.0283秒) [XML]

https://stackoverflow.com/ques... 

Is there a rule-of-thumb for how to divide a dataset into training and validation sets?

...ed for the validation set should be inversely proportional to the square root of the number of free adjustable parameters. In their conclusion they specify a formula: Validation set (v) to training set (t) size ratio, v/t, scales like ln(N/h-max), where N is the number of families of rec...
https://stackoverflow.com/ques... 

How to remove the hash from window.location (URL) with JavaScript without page refresh?

...rds @vahanpwns note, to use . instead of /. Using / changes the url to the root path. – Isaac Gregson Jun 26 '15 at 7:05 5 ...
https://stackoverflow.com/ques... 

Adding days to $Date in PHP

I have a date returned as part of a mySQL query in the form 2010-09-17 9 Answers 9 ...
https://stackoverflow.com/ques... 

What are namespaces?

...oller.php which is in the path: app/Http/Controllers from the project’s root directory There is also another controller class named: Controller.php, but this one is in the path: vendor/laravel/framework/src/Illuminate/Routing from the project’s root directory You don’t need to look at the s...
https://stackoverflow.com/ques... 

Lightweight SQL editor for Eclipse [closed]

...ditor. Search for 'toad' in eclipse market place. It has very good Oracle, MySQL and PostgreSQL support. Take a look at Installation instructions and screenshots. Alternatively, there is DBeaver (very good in my experience and support almost all DB's) which is built on eclipse platform and availab...
https://stackoverflow.com/ques... 

How do I create a comma-separated list from an array in PHP?

...a in the array before making it into a string; For example, addslashes, or mysql_real_escape_string. – Naphtali Gilead Aug 21 '15 at 15:48 add a comment  | ...
https://stackoverflow.com/ques... 

How does C compute sin() and other math functions?

...hev polynomials are used for most transcendentals but not all. e.g. Square root is faster to use a double iteration of Newton raphson method using a lookup table first. Again, that book "Computer Approximations" will tell you that. If you plan on implmementing these functions, I'd recommend to anyo...
https://stackoverflow.com/ques... 

DESTDIR and PREFIX of make

...ersion installed already and not want to disturb it, or he may not even be root. So he uses ./configure --prefix=/usr so the program will expect to be installed in /usr when it runs, then make install DESTDIR=debian/tmp to actually create the directory structure. make install prefix=*** ...
https://stackoverflow.com/ques... 

What does java:comp/env/ do?

...ione.zcu.cz/java/docs/jndi-1.2/tutorial/beyond/misc/policy.html At the root context of the namespace is a binding with the name "comp", which is bound to a subtree reserved for component-related bindings. The name "comp" is short for component. There are no other bindings at the root...
https://stackoverflow.com/ques... 

What is the difference between “expose” and “publish” in Docker?

...expose bash Inside the container, I launch a few instances of mini-httpd: root@fb8f7dd1322d:/# mini_httpd -p 80 root@fb8f7dd1322d:/# mini_httpd -p 8080 root@fb8f7dd1322d:/# mini_httpd -p 8090 I am then able to use curl from the host or other containers to fetch the home page of mini-httpd. Furthe...