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From Darshan Sonagara <darshan.sonag...@gmail.com>
Subject Re: Question Regarding Entropy calculation in Mahout
Date Tue, 22 Apr 2014 18:20:28 GMT
waiting for the replay sir .


On Tue, Apr 22, 2014 at 7:13 PM, Darshan Sonagara <
darshan.sonagara@gmail.com> wrote:

> Thnks for the Replay sir,
>
> actually i am doing clustering for gathering similar king of document in
> same cluster as much as possible.
> i can see from output file by cluster dump by observing top term.
> i also figure out that by varying Distance Measure Technique. it differs.
> but i want some mathematical prof that it is better then other technique.
> so for that i need to calculate Entropy and pureness of cluster.
> but i am not able to find any command in mahout which can give me entropy
> as a result.
> i found Entropy.java under mahout common math statistic package. but i
> don't what should i give it as input so that i can find entropy or other
> parameter. so i can find how much cluster is good or bed.
>
>
>
> On Tue, Apr 22, 2014 at 7:01 PM, Ted Dunning <ted.dunning@gmail.com>wrote:
>
>> On Tue, Apr 22, 2014 at 12:11 AM, Darshan Sonagara <
>> darshan.sonagara@gmail.com> wrote:
>>
>> > But the problem is that i want check that whether my clustering is good
>> or
>> > bad. so for that i need to calculate Entropy Value. I am not having any
>> > idea how to calculate entropy in mahout or by other technique.
>> > by finding entropy i can have good conclusion.
>> > so please can anyone help me with these.
>> >
>>
>> Actually, the way to tell whether your clustering is good is to see if it
>> works for its intended use.
>>
>> What do you want to use clustering for?
>>
>
>
>
> --
>
> *Regards From:*
>
> *Darshan  Sonagara*
> *Collaborative Platform lead,** SSN Team | Gujarat Section.*
>
> *Vice-Chairperson | **GCET IEEE SB.*
>
> (: +*91* 9408002452
>
>
>
>  : Darshan Sonagara<http://www.linkedin.com/pub/darshan-sonagara/64/11a/b54>
>   : Darshan Sonagara <http://www.facebook.com/darshansonagara>
>
>


-- 

*Regards From:*

*Darshan  Sonagara*
*Collaborative Platform lead,** SSN Team | Gujarat Section.*

*Vice-Chairperson | **GCET IEEE SB.*

(: +*91* 9408002452



 : Darshan Sonagara<http://www.linkedin.com/pub/darshan-sonagara/64/11a/b54>
  : Darshan Sonagara <http://www.facebook.com/darshansonagara>

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