{"record":{"id":"0bf2575012aca6b5","repo":"keras-team/keras","slug":"sparse-true-cannot-be-used-with-backend-backend","errorCode":null,"errorMessage":"`sparse=True` cannot be used with backend {backend.backend()}","messagePattern":"`sparse=True` cannot be used with backend (.+?)","errorType":"validation","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"keras/src/layers/preprocessing/discretization.py","lineNumber":102,"sourceCode":"    >>> layer(input)\n    array([[0, 2, 3, 2],\n           [1, 3, 3, 1]])\n    \"\"\"\n\n    def __init__(\n        self,\n        bin_boundaries=None,\n        num_bins=None,\n        epsilon=0.01,\n        output_mode=\"int\",\n        sparse=False,\n        dtype=None,\n        name=None,\n    ):\n        super().__init__(name=name, dtype=dtype)\n\n        if sparse and not backend.SUPPORTS_SPARSE_TENSORS:\n            raise ValueError(\n                f\"`sparse=True` cannot be used with backend {backend.backend()}\"\n            )\n        if sparse and output_mode == \"int\":\n            raise ValueError(\n                \"`sparse=True` may only be used if `output_mode` is \"\n                \"`'one_hot'`, `'multi_hot'`, or `'count'`. \"\n                f\"Received: sparse={sparse} and \"\n                f\"output_mode={output_mode}\"\n            )\n\n        argument_validation.validate_string_arg(\n            output_mode,\n            allowable_strings=(\n                \"int\",\n                \"one_hot\",\n                \"multi_hot\",\n                \"count\",\n            ),","sourceCodeStart":84,"sourceCodeEnd":120,"githubUrl":"https://github.com/keras-team/keras/blob/7a34a03db60bf60042242d6a556fc3be119046a5/keras/src/layers/preprocessing/discretization.py#L84-L120","documentation":"Error \"`sparse=True` cannot be used with backend {backend.backend()}\" thrown in keras-team/keras.","triggerScenarios":"Thrown at keras/src/layers/preprocessing/discretization.py:102 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"7a34a03db60bf60042242d6a556fc3be119046a5","analyzedAt":"2026-08-25T21:25:25.994Z","schemaVersion":2},"datasetVersion":"2026-08-26T02:17:13.382Z"}