h2o.interaction doesn't output the desired outcomes

[exalate-issue-sync]

We have had some issues with running h2o.interaction() in R recently that it either produces incorrect results or runs into errors. I have spent quite some time looking into it but cannot figure out why. I have attached some reproducible examples below. Could you help me take a look what is happening here?

interaction term created has incorrect values -------------------------

df = data.frame(
v1 = c('Y', 'Y', 'Y', 'N', 'N'),
v2 = c('S', 'S', 'S', 'A', 'A'),
v3 = c('E1', 'E1', 'E1', 'B1', 'B1')
)
df.hex = as.h2o(df, 'dfhex')
interaction = h2o.interaction(
data = df.hex,
destination_frame = 'interaction',
factors = c('v2','v3', 'v1'),
pairwise = F,
max_factors = 1000,
min_occurrence = 1
)
combined = h2o.cbind(df.hex, interaction)
combined

As can be seen, the values of all three columns used in the interaction have changed.

v1 v2 v3 v2_v3_v1

1 Y S E1 S_E1_N

2 Y S E1 S_E1_N

3 Y S E1 S_E1_N

4 N A B1 S_E1_Y

5 N A B1 S_E1_Y

Error when creating interaction for data with more than 5 rows ---------

df = data.frame(
v1 = c('Y', 'Y', 'Y', 'N', 'N', 'Y'),
v2 = c('S', 'S', 'S', 'A', 'A', 'N'),
v3 = c('E1', 'E1', 'E1', 'B1', 'B1', 'B1')
)
df.hex = as.h2o(df, 'dfhex')

Error in creating interaction for data with more than 5 rows

h2o.interaction(
data = df.hex,
destination_frame = 'interaction',
factors = c('v2','v3', 'v1'),
pairwise = F,
max_factors = 1000,
min_occurrence = 1
)

ERROR MESSAGE BELOW:

java.lang.ArrayIndexOutOfBoundsException: 2

java.lang.ArrayIndexOutOfBoundsException: 2

at water.fvec.CreateInteractions.makeDomain(CreateInteractions.java:85)

at water.fvec.CreateInteractions.compute2(CreateInteractions.java:171)

at water.H2O$H2OCountedCompleter.compute(H2O.java:1557)

at jsr166y.CountedCompleter.exec(CountedCompleter.java:468)

at jsr166y.ForkJoinTask.doExec(ForkJoinTask.java:263)

at jsr166y.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:974)

at jsr166y.ForkJoinPool.runWorker(ForkJoinPool.java:1477)

at jsr166y.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:104)

Error: java.lang.ArrayIndexOutOfBoundsException: 2

But no errors if the order of the interaction is in this way

h2o.interaction(
data = df.hex,
destination_frame = 'interaction',
factors = c('v1','v2', 'v3'),
pairwise = F,
max_factors = 1000,
min_occurrence = 1
)

[exalate-issue-sync]

Arun Aryasomayajula commented: [~accountid:5db1981f654fb20d96acbd52] will take a look.

[exalate-issue-sync]

Arun Aryasomayajula commented: Hi [~accountid:5db1981f654fb20d96acbd52] any updates on this?

[exalate-issue-sync]

Zuzana Olajcová commented: Hi [~accountid:5fa438f822f3990076aa232d], I am able to reproduce the issue but I don’t have a fix yet and need to carefully analyse. Currently I am at vacation until 20th of July, after that I will continue with this JIRA.

[exalate-issue-sync]

Zuzana Olajcová commented: Resolved in 76b73de

[h2o-ops]

JIRA Issue Details

Jira Issue: PUBDEV-8218
Assignee: Zuzana Olajcová
Reporter: Arun Aryasomayajula
State: Resolved
Fix Version: 3.32.1.5
Attachments: N/A
Development PRs: Available

[h2o-ops]

Linked PRs from JIRA

#5581