Overhaul availability testing and add expected language options #22
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I'm becoming more convinced this is correct. I will try to add those changes on this branch, first in the explainer, then the spec. |
These solve the problem discussed in webmachinelearning/prompt-api#29 and #16. They provide a mechanism for web developers to tell the browser to download additional material to support additional languages, and for web developers to get early errors if they know they will be trying to use a language that isn't supported. It also clearly separates input, context, and output languages, with a requirement on how the output language is produced by default (match the input). This removes the languageAvailable() API, folding it into createOptionsAvailable(). Further work might remove the AISummarizerCapabilities object altogether, since now it's mostly a wrapper around the single createOptionsAvailable() method.
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Add CoreOptions dictionaries with new tone|format|length enums. Add factory availability() methods and helpers with skeleton impls. Update and expand some test coverage. Update API shape to better match latest explainer updates: https://github.com/WICG/writing-assistance-apis webmachinelearning/writing-assistance-apis#22 TODO: Expand chrome/browser/ai/ai_[re]writer_unittest.cc coverage: - Add AIRewriterTest RewritePlainText and RewriteMarkdown. - Add AIWriterTest coverage for tone, format, length options. Bug: 380088820, 382596381, 382615217, 380239468 Test: Shape better matches explainer and naive impl WAI. Change-Id: I7e6c569adf30c6324038b7ee8738a4689c2b2838 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6071867 Reviewed-by: Brad Triebwasser <[email protected]> Auto-Submit: Mike Wasserman <[email protected]> Reviewed-by: Will Harris <[email protected]> Reviewed-by: Clark DuVall <[email protected]> Commit-Queue: Clark DuVall <[email protected]> Cr-Commit-Position: refs/heads/main@{#1396042}
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Remove the `ai.languageModel.capabilities()` method and its accompanying `AILanguageModelCapabilities` class. Instead, replace it with: * `ai.languageModel.availability(options)`, which takes the same options as `ai.languageModel.create()`, and returns the corresponding availability. * `ai.languageModel.params()`, which returns the default and max params (currently top-K and temperature). Additionally, add the `expectedInputLanguages` option to `create()` and `availability()`. The addition of this option to `create()` allows the web developer to signal the expected input languages ahead of time, allowing the downloading of additional material, or fast-failing if the additional material cannot be supported. The addition of this option to `availability()` replaces the `(await ai.languageModel.capabilities()).languageAvailable()` method. Closes #29; see especially #29 (comment). See also webmachinelearning/writing-assistance-apis#22 and webmachinelearning/translation-api#31.
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…tector Add an `expectedInputLanguages` option to language detector creation API. This allows the browser to download relevant material if necessary, or fail-fast if a language the web developer needs to support is not available. Then, remove the `capabilities()` methods and the accompanying `AI*Capabilities` classes. * For translator, the only useful capabilities API was `(await ai.translator.capabilities()).languagePairAvailable()`. We simplify this to `await ai.translator.availability()`. This design also avoids the complexity where we have to retrieve all the availability information for every combination of options during the call to `capabilities()`, for later sync access. Now we can just retrieve the relevant information during the call to `availability()`. Also, by unifying on using the same options for `create()` and `availability()`, we fix #24. * For language detector, the capabilities supplied both `(await ai.languageDetector.capabilities()).available` and `(await ai.languageDetector.capabilities()).languageAvailable()`. We simplify this into `await ai.languageDetector.availability()`, which can either take no arguments (emulating `available`) or take the same `{ expectedInputLanguages }` argument as `create()` (emulating `languageAvailable()`). See also webmachinelearning/writing-assistance-apis#22 and webmachinelearning/prompt-api#69.
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Per latest spec change, new `availability()` method will replace `capabilities()` method, which is planned to be removed after the heads-up to the OT users. webmachinelearning/writing-assistance-apis#22 NO_IFTTT=updated Bug: 390477782 Change-Id: I3ffa50209564a268bb5a611e2eb98dcb174b569e Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6197919 Commit-Queue: Daseul Lee <[email protected]> Reviewed-by: Mingyu Lei <[email protected]> Reviewed-by: Giovanni Ortuno Urquidi <[email protected]> Reviewed-by: Mike Wasserman <[email protected]> Reviewed-by: Takashi Toyoshima <[email protected]> Cr-Commit-Position: refs/heads/main@{#1416193}
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Add options for
expectedInputLanguages,expectedContextLanguages, andoutputLanguage. The former two are used for downloading additional material and early errors if the web developer's required input/context languages cannot be supported by the browser. The latter gives clarity about what to do given mixed-language inputs.Remove the
capabilities()method and the accompanyingAI*Capabilitiesclasses. The reasoning is as follows:Those classes had three APIs:
available,createOptionsAvailable(), andlanguageAvailable().languageAvailable()wasn't clear if it was talking about input, context, or output languages. Now that we have explicit options for those three, we could fold language availability testing intocreateOptionsAvailable(). But then, we can note that theavailableproperty is kind of useless, as just knowing that some possible combination of options/languages is supported is not helpful for any known use case. So, the only real functionality we care about is testing whether a given set of options tocreate()is supported.This was previously done via
(await ai.apiName.capabilities()).createOptionsAvailable(). We instead expose it viaawait ai.apiName.availability(). This name is a bit clearer, and this design also avoids the complexity where we have to retrieve all the availability information for every combination of options during the call tocapabilities(), for later sync access. Now we can just retrieve the relevant information during the call toavailability().This was previously discussed in webmachinelearning/prompt-api#29; see especially webmachinelearning/prompt-api#29 (comment). Closes #16.
See also webmachinelearning/prompt-api#69 and webmachinelearning/translation-api#31.
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