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从源代码剖析Mahout推荐引擎 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...工具集
推荐算法工具集
创建自己的推荐引擎构造器
1. Mahout推荐引擎概况
Mahout的推荐引擎，要从org.apache.mahout.cf.taste包说起。
packages的说明：
common: 公共类包括，异常，数据刷新接口，权重常量
eval: 定义构造器接口，...
FAT32系统中长文件名的存储 - C/C++ - 清泛网 - 专注C/C++及内核技术
...统会自动加上对应的短文件名，其一般有的原则：
(1)、取长文件名的前6个字符加上"~1"形成短文件名，扩展名不变。
(2)、如果已存在这个文件名，则符号"~"后的数字递增，直到5。
(3)、如果文件名中"~"后面的数字达到...
How do I add a submodule to a sub-directory?
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451
You go into ~/.janus and run:
git submodule add <git@github ...> snipmate-snippets/snippe...
Java SafeVarargs annotation, does a standard or best practice exist?
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1) There are many examples on the Internet and on StackOverflow about the particular issue with generics and varargs. Basically, it's when you have a variable number of arguments of a type-parameter type:
<T> void foo(...
Include intermediary (through model) in responses in Django Rest Framework
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141
How about.....
On your MemberSerializer, define a field on it like:
groups = MembershipSeria...
What should I do if the current ASP.NET session is null?
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158
Yes, the Session object might be null, but only in certain circumstances, which you will only ...
Fast way of finding lines in one file that are not in another?
...lines in each file. I am trying to find a fast way of finding lines in file1 that are not present in file2.
11 Answers
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Efficient way to rotate a list in python
... dedicated rotate() method.
from collections import deque
items = deque([1, 2])
items.append(3) # deque == [1, 2, 3]
items.rotate(1) # The deque is now: [3, 1, 2]
items.rotate(-1) # Returns deque to original state: [1, 2, 3]
item = items.popleft() # deque == [2, 3]
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Algorithm to detect intersection of two rectangles?
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18 Answers
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