# Data Reuploading Classifier

**URL:** <https://discuss.pennylane.ai/t/data-reuploading-classifier/899>\
**Category:** PennyLane Feedback\
**Created:** [March 7, 2021, 2:14am UTC](https://discuss.pennylane.ai/t/data-reuploading-classifier/899 "2021-03-07T02:14:24Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![andynader](https://avatars.discourse-cdn.com/v4/letter/a/e9c0ed/32.png) [@andynader](https://discuss.pennylane.ai/u/andynader)\
**Post date:** [March 7, 2021, 2:14am UTC](https://discuss.pennylane.ai/t/data-reuploading-classifier/899/1 "2021-03-07T02:14:24Z")

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Hi! I have a small, maybe nitpicky comment about the data re-uploading classifier demo page. If we have a 30% probability of being in the |0\> state and a 70% probability of being in the |1\> state, the associated state quantum state vector isn’t [0.3,0.7] as this isn’t a normalized vector. You would have to take the square root.

Just thought that I would mention this typo since some people might get the wrong idea.

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**Author:** ![josh](https://yyz2.discourse-cdn.com/flex012/user_avatar/discuss.pennylane.ai/josh/32/100_2.png) [@josh](https://discuss.pennylane.ai/u/josh)\
**Post date:** [March 8, 2021, 4:54am UTC](https://discuss.pennylane.ai/t/data-reuploading-classifier/899/2 "2021-03-08T04:54:41Z")

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Hi @andynader, thanks for catching this! This is indeed incorrect.

I’ve made a PR to fix this here: [https://github.com/PennyLaneAI/qml/pull/227](https://github.com/PennyLaneAI/qml/pull/227)

If you spot anything else, feel free to open a GitHub issue directly on the [https://github.com/PennyLaneAI/qml](https://github.com/PennyLaneAI/qml) repository — this is the source code for the demo website, and the team will be able to move quickly and get it fixed.

Alternatively, feel free to open a PR as well — contributions are always welcomed!