大约有 40,000 项符合查询结果（耗时：0.0750秒） [XML]
Why must a nonlinear activation function be used in a backpropagation neural network? [closed]
...
Higher order functions can be approximated with linear activation functions using multiple hidden layers. The universal approximation theorem is specific to MLPs with only one hidden layer.
– eski
...
What XML parser should I use in C++? [closed]
... requires you to do a lot of explicit memory allocation of string names in order to build its DOM. It does provide a kind of string buffer, but that still requires a lot of explicit work on your end. It's certainly functional, but it's a pain to use.
It uses the MIT licence. It is a header-only libr...
How can I pair socks from a pile efficiently?
...was doing a naive search — picking one sock and "iterating" the pile in order to find its pair. This requires iterating over n/2 * n/4 = n 2 /8 socks on average.
...
Mock functions in Go
...erstand your second sentence. TDD drives better code. Your code changes in order to be testable (because testable code is necessarily modular with well-thought-out interfaces), but the primary purpose is to have better code--having automated tests is just an awesome secondary benefit. If your concer...
Creating an empty file in C#
...that File.WriteAllText(string, string) uses "UTF-8 encoding without a Byte-Order Mark (BOM)". If you still see one, that would be a bug in WriteAllText or its documentation worth reporting.
– Heinzi
Mar 7 '17 at 14:09
...
JAX-RS — How to return JSON and HTTP status code together?
...
In that case, we use the created method of the Response builder class in order to set the status code to 201. We pass the entity object (user) to the response via the entity() method.
The result is that the HTTP code is 401 as we wanted, and the body of the response is the exact same JSON as we h...
Using custom std::set comparator
I am trying to change the default order of the items in a set of integers to be lexicographic instead of numeric, and I can't get the following to compile with g++:
...
Most efficient way to store thousand telephone numbers
...ups of 17 bits are the last five digits of each number stored in ascending order.
In total we're looking at 2128 bytes for the 1000 numbers, or 17.017 bits per 10-digit telephone number.
Search is O(log n) (binary search) and full enumeration is O(n).
...
Optimizing away a “while(1);” in C++0x
...
The relevant issue is that the compiler is allowed to reorder code whose side effects do not conflict. The surprising order of execution could occur even if the compiler produced non-terminating machine code for the infinite loop.
I believe this is the right approach. The langu...
Is gcc std::unordered_map implementation slow? If so - why?
...gure out, how much slower our concurrent hash map is compared with std::unordered_map .
3 Answers
...