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推荐系统算法初探 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...多口味偏小众的用户无法找到自己感兴趣的内容。 目的2. 降低信息过载 互联网时代信息量已然处于爆炸状态,若是将所有内容都放在网站首页上用户是无从阅读的,信息的利用率将会十分低下。因此我们需要推荐系统来帮助...
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How to create a drop shadow only on one side of an element?

Is there a way to drop the shadow only on the bottom?. I have a menu with 2 images next to each other. I don't want a right shadow because it overlaps the right image. I don't like to use images for this so is there a way to drop it only on the bottom like: ...
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How to cast int to enum in C++?

... 248 int i = 1; Test val = static_cast<Test>(i); ...
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How to remove elements from a generic list while iterating over it?

... 27 Answers 27 Active ...
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Best way to repeat a character in C#

... answered Jan 4 '09 at 22:00 Christian C. SalvadóChristian C. Salvadó 688k171171 gold badges886886 silver badges826826 bronze badges ...
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Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?

...ferent sizes, a pattern came up. Invariably, transposing a matrix of size 2^n is slower than transposing one of size 2^n+1 . For small values of n , the difference is not major. ...
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jQuery form serialize - empty string

... 216 You have to give the input element a name. E.g.: <form id="form1" action="/Home/Test1" met...
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How can I pass a member function where a free function is expected?

...ion(void (*fptr)(void*, int, int), void* context) { fptr(context, 17, 42); } void non_member(void*, int i0, int i1) { std::cout << "I don't need any context! i0=" << i0 << " i1=" << i1 << "\n"; } struct foo { void member(int i0, int i1) { std::cout...
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Django Rest Framework: Dynamically return subset of fields

... 124 You can override the serializer __init__ method and set the fields attribute dynamically, based...
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Which is more efficient, a for-each loop, or an iterator?

... 268 If you are just wandering over the collection to read all of the values, then there is no diff...