[jira] [Created] (SYSTEMML-1368) Better KM output

["Brendan Dwyer (JIRA)" <ji...@apache.org>]

Brendan Dwyer created SYSTEMML-1368:
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             Summary: Better KM output
                 Key: SYSTEMML-1368
                 URL: https://issues.apache.org/jira/browse/SYSTEMML-1368
             Project: SystemML
          Issue Type: Wish
          Components: Algorithms
            Reporter: Brendan Dwyer


As described on [KM.dml#L51|https://github.com/apache/incubator-systemml/blob/master/scripts/algorithms/KM.dml#L51] KM returns an matrix with 1 row and a number of columns equal to the number of inputs times 7.

Can we please change this so that each input has it's own row and we only return 7 columns total?

{quote}
OUTPUT: 
1- Matrix KM whose dimension depends on the number of groups (denoted by g) and strata (denoted by s) in the data: 
each collection of 7 consecutive columns in KM corresponds to a unique combination of groups and strata in the data with the following schema
	1. col: timestamp
	2. col: no. at risk
	3. col: no. of events
	4. col: Kaplan-Meier estimate of survivor function surv
	5. col: standard error of surv
	6. col: lower 100*(1-alpha)% confidence interval for surv
7. col: upper 100*(1-alpha)% confidence interval for surv
{quote}



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