TorchServe Kserve v2 bert explain

[shrinath-suresh]

Signed-off-by: Shrinath Suresh shrinath@ideas2it.com

What this PR does / why we need it:

Adding explanations support for TorchServe-KServe Bert example

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

Type of changes
Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Feature/Issue validation/testing:

Please describe the tests that you ran to verify your changes and relevent result summary. Provide instructions so it can be reproduced.
Please also list any relevant details for your test configuration.

• Test A

• Test B

• Logs
  Infer:
  Request

curl -v -H "ContentType: application/json" http://localhost:8080/v2/models/BERTSeqClassification/infer -d @./bert_v2.json

Response

{"id": "d3b15cad-50a2-4eaf-80ce-8b0a428bd298", "model_name": "BERTSeqClassification", "model_version": "1.0", "outputs": [{"name": "predict", "shape": [], "datatype": "BYTES", "data": ["Not Accepted"]}]}

Explain:

Request:

curl -v -H "ContentType: application/json" http://localhost:8080/v2/models/BERTSeqClassification/explain -d @./bert_v2.json

Response:

{"id": "d3b15cad-50a2-4eaf-80ce-8b0a428bd298", "model_name": "BERTSeqClassification", "model_version": "1.0", "outputs": [{"name": "explain", "shape": [], "datatype": "BYTES", "data": [{"words": ["[CLS]", "bloomberg", "has", "decided", "to", "publish", "a", "new", "report", "on", "the", "global", "economy", ".", "[SEP]"], "importances": [0.0, -0.4357128270503739, -0.11062090381137636, 0.11323800050323735, 0.0543867521909499, -0.11364839498235829, 0.15214523057408708, -0.0013060334114742402, 0.057128507423076756, -0.02296412607620525, 0.19375434036101652, -0.12138246839088386, 0.20713364144644153, -0.8044258442597441, 0.0], "delta": -0.019047514470637128}]}]}

Special notes for your reviewer:

1. Please confirm that if this PR changes any image versions, then that's the sole change this PR makes.

Checklist:

• Have you added unit/e2e tests that prove your fix is effective or that this feature works?
• Has code been commented, particularly in hard-to-understand areas?
• Have you made corresponding changes to the documentation?

Release note:

[aws-kf-ci-bot]

Hi @shrinath-suresh. Thanks for your PR.

I'm waiting for a kserve member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[HamidShojanazeri]

Thanks @shrinath-suresh I could verify the handler changes locally.

[yuzisun]

/lgtm
/approve

[kserve-oss-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: shrinath-suresh, yuzisun

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