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Convert transformers scalar string output to list of strings for batch inference #8546

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merged 2 commits into from
May 30, 2023

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#xxx

What changes are proposed in this pull request?

Changes the output of transformers models that previously would return str to return List[str] with a single element to support batch inference processing.

How is this patch tested?

  • Existing unit/integration tests
  • New unit/integration tests
  • Manual tests (describe details, including test results, below)

Does this PR change the documentation?

  • No. You can skip the rest of this section.
  • Yes. Make sure the changed pages / sections render correctly in the documentation preview.

Release Notes

Is this a user-facing change?

  • No. You can skip the rest of this section.
  • Yes. Give a description of this change to be included in the release notes for MLflow users.

Changes the output of transformers models that previously would return str to return List[str] with a single element to support batch inference processing.

What component(s), interfaces, languages, and integrations does this PR affect?

Components

  • area/artifacts: Artifact stores and artifact logging
  • area/build: Build and test infrastructure for MLflow
  • area/docs: MLflow documentation pages
  • area/examples: Example code
  • area/model-registry: Model Registry service, APIs, and the fluent client calls for Model Registry
  • area/models: MLmodel format, model serialization/deserialization, flavors
  • area/recipes: Recipes, Recipe APIs, Recipe configs, Recipe Templates
  • area/projects: MLproject format, project running backends
  • area/scoring: MLflow Model server, model deployment tools, Spark UDFs
  • area/server-infra: MLflow Tracking server backend
  • area/tracking: Tracking Service, tracking client APIs, autologging

Interface

  • area/uiux: Front-end, user experience, plotting, JavaScript, JavaScript dev server
  • area/docker: Docker use across MLflow's components, such as MLflow Projects and MLflow Models
  • area/sqlalchemy: Use of SQLAlchemy in the Tracking Service or Model Registry
  • area/windows: Windows support

Language

  • language/r: R APIs and clients
  • language/java: Java APIs and clients
  • language/new: Proposals for new client languages

Integrations

  • integrations/azure: Azure and Azure ML integrations
  • integrations/sagemaker: SageMaker integrations
  • integrations/databricks: Databricks integrations

How should the PR be classified in the release notes? Choose one:

  • rn/breaking-change - The PR will be mentioned in the "Breaking Changes" section
  • rn/none - No description will be included. The PR will be mentioned only by the PR number in the "Small Bugfixes and Documentation Updates" section
  • rn/feature - A new user-facing feature worth mentioning in the release notes
  • rn/bug-fix - A user-facing bug fix worth mentioning in the release notes
  • rn/documentation - A user-facing documentation change worth mentioning in the release notes

Signed-off-by: Ben Wilson <benjamin.wilson@databricks.com>
Comment on lines -2527 to -2531
"inputs": '[{"name": "sequences", "type": "string"}, {"name": '
'"candidate_labels", "type": "string"}, {"name": '
'"hypothesis_template", "type": "string"}]',
"outputs": '[{"name": "sequence", "type": "string"}, {"name": "labels", '
'"type": "string"}, {"name": "scores", "type": "double"}]',
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To confirm, this is all just no-op formatting, right? No fundamental reason for this particular key ordering?

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correct. I'm going to file a follow-up PR next week to convert all of these to dicts instead of JSON encoded dicts to minimize the chances of arbitrary ordering creating issues in these tests as well.

@@ -2528,7 +2528,7 @@ to formats that are compatible with json serialization and casting to Pandas Dat
types that can be loaded as ``pyfunc``.

In the current version, text-based large language
models are supported for use with ``pyfunc``, while computer vision, audio, multi-modal, timeseries,
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Shall we move audio next to text-based? large language models for text and audio processing are supported...

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ah good catch. Updated!

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LGTM! Thanks @BenWilson2 !

@github-actions github-actions bot added area/models MLmodel format, model serialization/deserialization, flavors rn/bug-fix Mention under Bug Fixes in Changelogs. labels May 26, 2023
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mlflow-automation commented May 26, 2023

Documentation preview for b55838f will be available here when this CircleCI job completes successfully.

More info

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LGTM after addressing @dbczumar 's comments :)

Signed-off-by: Ben Wilson <benjamin.wilson@databricks.com>
@BenWilson2 BenWilson2 merged commit 6168589 into mlflow:master May 30, 2023
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@BenWilson2 BenWilson2 deleted the adjust-str-return-type branch May 30, 2023 13:12
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4 participants