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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
...L(Cassandra, HBase, MongoDB)。
注：NoSQL的实现在mahout-integration-0.8.jar中。
数据格式支持2种：
GenericDataModel: 用户ID，物品ID，用户对物品的打分(UserID,ItemID,PreferenceValue)
GenericBooleanPrefDataModel: 用户ID，物品ID (UserID,ItemID)，这种方式表...
Entity Framework Code First - Advantages and disadvantages of Fluent Api vs Data Annotations [closed
...tity Framework code-first, a lot of the database model is can be extracted from the code. Fluent API and/or Attributes can be used to fine tune the model.
...
Javascript Array of Functions
...hen you want to execute a given function in the array:
array_of_functions[0]('a string');
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How do I get the object if it exists, or None if it does not exist?
...
From django docs
get() raises a DoesNotExist exception if an object is not found for the given parameters. This exception is also an attribute of the model class. The DoesNotExist exception inherits from django.core.exce...
When is it appropriate to use C# partial classes?
...nting interfaces in C#, and keeping the interface members clearly seperate from the class-members: stackoverflow.com/questions/3601901/why-use-partial-classes/…
– STW
Aug 30 '10 at 21:14
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Ruby 'require' error: cannot load such file
...ur files to a different directory, or just want to start your Ruby process from a different directory, you'll have to rethink all of those require statements.
Using require to access files that are on the load path is a fine thing and Ruby gems do it all the time. But you shouldn't start the argum...
OpenSSH升级后不能登录的问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...g/?release=$releasever&arch=$basearch&repo=centosplus
gpgcheck=1
enabled=0
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-6
#contrib - packages by Centos Users
[contrib]
name=CentOS-$releasever - Contrib - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyu...
Custom domain for GitHub project pages
...c are not clear or linear.
Step 1: Enable GitHub pages in GitHub settings
From your repo, click on the tab
Scroll down to the GitHub Pages section. You have two options:
Choosing master branch will treat /README.md as your web index.html. Choosing master branch /docs folder will treat /docs/REA...
How does SSL really work?
...ing (#2 above).
But what if an adversary could modify packets sent to and from the server, and what if that adversary modified the certificate you were presented with and inserted their own public key or changed any other important details? If that happened, the adversary could intercept and modify...
How do I get the 'clear' command in Cygwin?
... the screen is really useful for quickly making sure the output you get is from where you think it is from.
– DrCord
Sep 10 '13 at 22:07
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