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How do I determine k when using k-means clustering?
...X | C) - (p / 2) * log n
where L(X | C) is the log-likelihood of the dataset X according to model C, p is the number of parameters in the model C, and n is the number of points in the dataset.
See "X-means: extending K-means with efficient estimation of the number of clusters" by Dan Pelleg and An...
Android Studio Stuck at Gradle Download on create new project
...er option that you could possibly try is that if you look into File --> Settings, there is an option for Gradle location. You could go to the Gradle download site, download a local distribution of Gradle and point the Gradle location to that local directory.
...
Python - Create a list with initial capacity
...rs are a good idea, true. i was wanting a general way to do it besides the setting in-place. i guess the difference is minor, thoguh.
– Claudiu
Nov 23 '08 at 0:57
add a commen...
In Functional Programming, what is a functor?
...more elements of type a), the Maybe type (zero or one elements of type a), sets of elements of type a, arrays of elements of type a, all kinds of search trees containing values of type a, and lots of others you can think of.
The other property that T has to satisfy is that if you have a function of ...
'printf' vs. 'cout' in C++
... state and actual values. I never saw a language where something like std::setfill would be a type (other than C++, of course). printf clearly separates arguments and actual type. I really would prefer to maintain the printf version of it (even if it looks kind of cryptic) compared to iostream versi...
Integer to hex string in C++
...is produces the exact amount of digits needed to represent it. You may use setfill and setw this to circumvent the problem:
stream << std::setfill ('0') << std::setw(sizeof(your_type)*2)
<< std::hex << your_int;
So finally, I'd suggest such a function:
template<...
Callback functions in C++
... that is fired, each time the users presses a button on his keyboard and a set of functions that control your game behaviour.
With callbacks you can (re)decide at runtime which action will be taken.
void player_jump();
void player_crouch();
class game_core
{
std::array<void(*)(), total_num_...
How to delete an SMS from the inbox in Android programmatically?
... further on.
In your AndroidManifest.xml file, make sure to have priority set to highest:
<receiver android:name=".receiver.SMSReceiver" android:enabled="true">
<intent-filter android:priority="1000">
<action android:name="android.provider.Telephony.SMS_RECEIVED" />
...
What is __stdcall?
...n used for the function. This tells the compiler the rules that apply for setting up the stack, pushing arguments and getting a return value.
There are a number of other calling conventions, __cdecl, __thiscall, __fastcall and the wonderfully named __declspec(naked). __stdcall is the standard cal...
Is there a C# type for representing an integer Range?
...gt;Minimum value of the range.</summary>
public T Minimum { get; set; }
/// <summary>Maximum value of the range.</summary>
public T Maximum { get; set; }
/// <summary>Presents the Range in readable format.</summary>
/// <returns>String repres...