972.txt

This complete matlab for neural network

发信人: iamgufeng (古风), 信区: DataMining
标  题: Re: 下一步该看些什么
发信站: 南京大学小百合站 (Tue Dec 18 17:18:10 2001), 站内信件

for different implementation and configuration, the session period is
variable.

ASP for example, the property of session.timeout declares the session
period. The default value is 20 minutes. When you open a new browser or 
access another application, a new session(represented by sessionid) will 
be created.

the session infomation(sessionid cookie) is included in each HTTP request
header,server checks it for different session. so if we can save these
session info we can sessionize correctly. If we ignore those unnecessary 
details, like what you said, the inactive period of a session is a good
choice.What's the "session" and "cookie" definition of most dm soft such 
as SAS mean?

roamingo,Which methods did you adopt frequently in your experiments, such as
 SWLMS?



【 在 roamingo (漫步鸥) 的大作中提到: 】
: I think it's better to use a configurable variable when you are writing
: a sessionizor.  Then, you can find some reasonable interval by yourself.
: For my experiments, 10 - 30 minites are all fine. (This is the inactive
: period of a session, not the total time span of it.) 
: For the second question, there are many, depending on what kind of patterns
: you are going to find. For example:
:  * Association: find those pages that tend to be accessed togeter.
:  * Sequenatial analysis: find the frequent path.
:  * Markov chain model: predict the next access, often used to do prefetch.
:  * Clustering (usually the categorial value oriented method, like ROCK 
:    mentioned in Han's textbook):
:    - session clustering
:    - page clustering
:  * And some combinations of the above.
: 【 在 hwe (xiaohui) 的大作中提到: 】
: : 好像是30分钟


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※ 修改:．iamgufeng 於 Dec 18 17:36:22 修改本文．[FROM: 210.83.133.26]
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