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From Darshan Sonagara <darshan.sonag...@gmail.com>
Subject Re: Question Regarding Entropy calculation in Mahout
Date Wed, 23 Apr 2014 19:21:11 GMT
sir please reply me as soon as possible
thanks in advance.


On Tue, Apr 22, 2014 at 11:50 PM, Darshan Sonagara <
darshan.sonagara@gmail.com> wrote:

> 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>
>
>


-- 

*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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