keras-team/keras · error · ValueError

Invalid `ord` argument for matrix norm. Received: ord={self.

Error message

Invalid `ord` argument for matrix norm. Received: ord={self.ord}

What it means

Error "Invalid `ord` argument for matrix norm. Received: ord={self.ord}" thrown in keras-team/keras.

Source

Thrown at keras/src/ops/linalg.py:324

            axis = self.axis
        num_axes = len(axis)
        if num_axes == 1 and isinstance(self.ord, str):
            raise ValueError(
                "Invalid `ord` argument for vector norm. "
                f"Received: ord={self.ord}"
            )
        elif num_axes == 2 and self.ord not in (
            None,
            "fro",
            "nuc",
            float("inf"),
            float("-inf"),
            1,
            -1,
            2,
            -2,
        ):
            raise ValueError(
                "Invalid `ord` argument for matrix norm. "
                f"Received: ord={self.ord}"
            )
        return KerasTensor(
            reduce_shape(x.shape, axis=self.axis, keepdims=self.keepdims),
            dtype=output_dtype,
        )

    def call(self, x):
        x = backend.convert_to_tensor(x)
        return backend.linalg.norm(
            x, ord=self.ord, axis=self.axis, keepdims=self.keepdims
        )


@keras_export(["keras.ops.norm", "keras.ops.linalg.norm"])
def norm(x, ord=None, axis=None, keepdims=False):
    """Matrix or vector norm.

View on GitHub (pinned to 7a34a03db6)

When it happens

Trigger: Thrown at keras/src/ops/linalg.py:324 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of keras-team/keras@7a34a03db6 (2026-08-25). Data as JSON: /api/errors/1fd8a0e7ad17c4eb. Report an issue: GitHub.