Expose most important reason codes in Py/R & MOJO

[exalate-issue-sync]

A lot of user like shapley so they can see the top n (+bottom n) reason codes and the actual value of that column - eg.: age increased prediction by x amount and their age was 40 [~accountid:557058:f0137791-c6cb-47bd-bcce-fc81ad4cfefa]

This should be available in Py/R, input frame output frame* and also in MOJO on a per-row basis.

*See screenshot for proposed output structure.

[exalate-issue-sync]

Adam Valenta commented: I adjusted current interface

{code:python}model.predict_contributions(data){code}

to accept top_n, top_bottom_n and abs_val (compare as absolute values). R and MOJOs are similar. Old behaviour (top_n=0, top_bottom_n=0 and abs_val=False) is untouched.

{code:python}:param top_n: Return only #top_n highest contributions + bias.
:param top_bottom_n: Return only #top_bottom_n lowest contributions + bias
If top_n and top_bottom_n are defined together then return array of #top_n + #top_bottom_n + bias
:param abs_val: True to compare absolute values of contributions{code}

---

{noformat}pros_gbm.predict_contributions(prostate,top_n=2){noformat}

||top_feature_1||top_value_1||top_feature_2||top_value_2||BiasTerm||
|VOL|0.176247|RACE|0.0313198|-0.625094|

---

{noformat}pros_gbm.predict_contributions(prostate,top_bottom_n=2){noformat}

||bottom_top_feature_1||bottom_top_value_1||bottom_top_feature_2||bottom_top_value_2||BiasTerm||
|PSA|-0.664325|GLEASON|-0.438402|-0.625094|

---

{code:python}pros_gbm.predict_contributions(prostate,top_n=2, top_bottom_n=2){code}

||top_feature_1||top_value_1||top_feature_2||top_value_2||bottom_top_feature_1||bottom_top_value_1||bottom_top_feature_2||bottom_top_value_2||BiasTerm||
|VOL|0.176247|RACE|0.0313198|PSA|-0.664325|GLEASON|-0.438402|-0.625094|

---

For all values user can use setup top_n=-1 or top_bottom_n=-1.

{noformat}pros_gbm.predict_contributions(prostate,top_n=-1){noformat}

||top_feature_1||top_value_1||top_feature_2||top_value_2||top_feature_3||top_value_3||top_feature_4||top_value_4||top_feature_5||top_value_5||top_feature_6||top_value_6||top_feature_7||top_value_7||BiasTerm||
|VOL|0.176247|RACE|0.0313198|DCAPS|-0.0169935|DPROS|-0.0204504|AGE|-0.370221|GLEASON|-0.438402|PSA|-0.664325|-0.625094|

[h2o-ops]

JIRA Issue Migration Info

Jira Issue: PUBDEV-7937
Assignee: Adam Valenta
Reporter: Michal Kurka
State: Resolved
Fix Version: 3.34.0.1
Attachments: Available (Count: 1)
Development PRs: Available

Linked PRs from JIRA

#5493
#5494
#5504
#5508
#5582
#5233

Attachments From Jira

Attachment Name: image (10).png
Attached By: Michal Kurka
File Link:https://h2o-3-jira-github-migration.s3.amazonaws.com/PUBDEV-7937/image (10).png