Re: SystemML query

[arijit chakraborty]

Hi,

I've an issue regarding finding and removing the duplicate in a column/ row of 
a matrix. I'm tried this method:

duplicate_matrix = matrix("1 2 3 3 3 4 5 6", rows = 8, cols = 1)

dup_ind = matrix(1,rows = nrow(duplicate_matrix),cols = 1)
a = nrow(dup_ind)
b = nrow(duplicate_matrix)
                                                #Clumsy Unique. Can we check 
with the systemml guy?
for(i in 2:nrow(duplicate_matrix)){
    if(as.scalar(duplicate_matrix[i,]) == as.scalar(duplicate_matrix[i-1,]) ){
    dup_ind[i,] = 0
  }
}


My question is, is there any better way of doing it? In systemML, we don't have 
method to find/remove/ count duplicate values.

Thank you!
Arijit


________________________________
From: Niketan Pansare <npan...@us.ibm.com>
Sent: Friday, April 14, 2017 9:14 PM
To: arijit chakraborty
Cc: Matthias Boehm1; Berthold Reinwald
Subject: Re: SystemML query

Thanks Arijit. I appreciate your feedback. I will convey your concerns to other 
committers and urge them to be active on stackoverflow too. If you have already 
posted questions on stackoverflow, please send me the links and I will do my 
best to answer them :)

On Apr 14, 2017, at 6:50 AM, arijit chakraborty 
<ak...@hotmail.com<mailto:ak...@hotmail.com>> wrote:

Thanks a lot Niketan! I didn’t expect you to reply my question. Actually I was 
not sure if I can post question in that forum. And hardly people reply on 
systemML in stackoverflow.

But from now on I’ll surely post my questions there. I’ve few more questions.

Thanks a lot again!

Regards,
Arijit

Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10

From: Niketan Pansare<mailto:npan...@us.ibm.com>
Sent: Thursday, April 13, 2017 11:01 PM
To: arijit chakraborty<mailto:ak...@hotmail.com>
Subject: Re: SystemML query


Hi Arijit,

I am happy to help, however I would recommend to post question (along with 
answer) on our mailing list 
dev@systemml.incubator.apache.org<mailto:dev@systemml.incubator.apache.org> as 
your question may help others as well :)

X = matrix(1, rows = 1, cols = 100)
J = matrix("10 20 25 26 28 31 50 67 79", rows=1, cols=9)
J = t(J) # Make J a column vector
I = matrix(1, rows=nrow(J), cols=1)
V = matrix(10, rows=nrow(J), cols=1)
output = table(I, J, V)

Thanks,

Niketan Pansare
IBM Almaden Research Center
E-mail: npansar At us.ibm.com<http://us.ibm.com>
http://researcher.watson.ibm.com/researcher/view.php?person=us-npansar

<graycol.gif>arijit chakraborty ---04/13/2017 09:20:38 AM---Hi Niketan, Hope 
you are keeping well!

From: arijit chakraborty <ak...@hotmail.com<mailto:ak...@hotmail.com>>
To: Niketan Pansare/Almaden/IBM@IBMUS
Date: 04/13/2017 09:20 AM
Subject: SystemML query
<EC07C6C8E03748A1B86D1B5DBC6B46FD.png>



Hi Niketan,

Hope you are keeping well!

I got stuck in a systemML coding problem and don't know where to approach. So 
mailing you. I know this is not fair, and will not repeat in future.

My question is the following:

I've a matrix of 1 row and 100 columns, matrix(1, rows = 1, cols = 100). I've 
another column matrix of form matrix("10 20 25 26 28 31 50 67 79", rows = 1, 
cols = 9). I want to add some value say 10, to 100 column matrix using the 
values of second matrix position indicator. Rest of the columns' values remain 
the same

How to do it here?

Thanks a lot! Regards,
Arijit