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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
... 定义数据模型接口
neighborhood: 定义近邻算法的接口
recommender: 定义推荐算法的接口
similarity: 定义相似度算法的接口
transforms: 定义数据转换的接口
hadoop: 基于hadoop的分步式算法的实现类
impl: 单机内存算法实现类
从上面的pa...
What is the easiest way to duplicate an activerecord record?
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To get a copy, use the clone (or dup for rails 3.1+) method:
# rails < 3.1
new_record = old_record.clone
#rails >= 3.1
new_record = old_record.dup
Then you can change whichever fields you want.
ActiveRecord overrides the built-in Object#clone to give you a new (not s...
RESTful Services - WSDL Equivalent
I have been reading about REST and SOAP, and understand why implementing REST can be beneficial over using a SOAP protocol. However, I still don't understand why there isn't the "WSDL" equivalent in the REST world. I have seen posts saying there is "no need" for the WSDL or that it would be redund...
JavaScript: filter() for Objects
... feed him for a day, teach him how to bake and you'll feed him for a lifetime (or something, I'm danish, I don't know the correct English sayings ;)
– Martin Jespersen
Feb 21 '11 at 22:52
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How would you compare jQuery objects?
...g to figure out how to compare two jQuery objects, to see if the parent element is the body of a page.
4 Answers
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Very slow compile times on Visual Studio 2005
We are getting very slow compile times, which can take upwards of 20+ minutes on dual core 2GHz, 2G Ram machines.
34 Answ...
How can I copy & paste, or duplicate, an existing project?
...w job" and then select "Copy existing job" at the bottom. Then enter the name of the job you want to copy into the text field.
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How can I remove duplicate rows?
...fficient than NOT EXISTS sqlinthewild.co.za/index.php/2010/03/23/… The same site also compares NOT IN vs NOT EXISTS. sqlinthewild.co.za/index.php/2010/02/18/not-exists-vs-not-in Out of the 3 I think NOT EXISTS performs best. All three will generate a plan with a self join though that can be avoide...
How can I generate a self-signed certificate with SubjectAltName using OpenSSL? [closed]
...trying to generate a self-signed certificate with OpenSSL with SubjectAltName in it.While I am generating the csr for the certificate, my guess is I have to use v3 extensions of OpenSSL x509.
I am using :
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efficient way to implement paging
Should I use LINQ's Skip() and Take() method for paging, or implement my own paging with a SQL query?
10 Answers
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