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The specific limitations of JSON Schema? #104

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ckhfor opened this issue Nov 28, 2024 · 3 comments
Open

The specific limitations of JSON Schema? #104

ckhfor opened this issue Nov 28, 2024 · 3 comments

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@ckhfor
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ckhfor commented Nov 28, 2024

Good Job! Can you provide the specific limitations of JSON Schema? Like, additionalProperties,defs,min/max,patternProperties. Thanks.
@Ubospica
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Yes. We will update our doc to cover the supported and unsupported keywords soon.

@Ubospica Ubospica mentioned this issue Dec 7, 2024
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Ubospica added a commit that referenced this issue Dec 7, 2024
@Ubospica
[Feature] Allow unconstrained whitespace in JSON schema (#123)
7cc2814 
This PR supports allowing any whitespace by the grammar converted from JSON schema. 

Previously the json_schema_converter only allows strictly formatted JSON schema by specifying the indentation and separators. However, some model could tend to generate unformatted JSON schema. Forcing them to generate strictly formatted json may degrade the output quality, because these models will generate a dummy json following the format constraint. 

This PR provides an option `any_whitespace` in `Grammar.from_json_schema` and `GrammarCompiler.compile_json_schema`, default true, to allow any whitespace in the generated json, therefore allowing non-strictly formatted json output.

Note that this PR changes the behavior of these two functions that the converted grammar will by default allow any whitespace, unless a indentation is specifyed.

It also addresses #104.
@gryffindor-rr
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Yes. We will update our doc to cover the supported and unsupported keywords soon.

is the doc updated? i'd like to evaluate if xgrammar can meet my required json schema. Thanks!

@saattrupdan saattrupdan mentioned this issue Feb 13, 2025
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@Ubospica
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Hi @gryffindor-rr, thanks for asking that. We are recently working on a project aiming to enhance the completeness of json schema support. We expect almost all features (except some high-level features) will be supported in weeks. Feel free to raise issues if any feature in your json schema is not supported well!

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@Ubospica @ckhfor @gryffindor-rr