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RootMeanSquaredError metric is missing from keras core.metrics

RootMeanSquaredError metric is missing from keras core.metrics: a task in MiMo-V2.6-RL-oss: Agentic RL Environments (MiMo RL release). RootMeanSquaredError metric is missing from keras core.metrics I'm porting a regression model from tf.keras to keras core and one of the metrics I use during…

The task

RootMeanSquaredError metric is missing from keras_core.metrics I'm porting a regression model from tf.keras to keras_core and one of the metrics I use during training is RMSE. With tf.keras this is just: The equivalent in keras_core doesn't work: it fails because…

Part of XiaomiMiMo/MiMo-V2.6-RL-oss.