# \#library
**URL:** https://forum.crunchdao.com/tag/library/7.md
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## [Question: Is the full cloud X\_test distribution representative of the reduced test sample?](https://forum.crunchdao.com/t/question-is-the-full-cloud-x-test-distribution-representative-of-the-reduced-test-sample/1201)
**Author:** [@random-donglin](https://forum.crunchdao.com/u/random-donglin)\
**Replies:** 1\
**Last updated:** [August 22, 2026, 2:41pm UTC](https://forum.crunchdao.com/t/question-is-the-full-cloud-x-test-distribution-representative-of-the-reduced-test-sample/1201 "2026-08-22T14:41:45Z")
I ran into something during a local data audit that I think is worth clarifying with the competition team. In the training data, there is a very small extreme-severity tail: roughly 0.5% of the sequences have extremely …
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## [Module error Please explain](https://forum.crunchdao.com/t/module-error-please-explain/1036)
**Author:** [@mr-sairaj-nanda](https://forum.crunchdao.com/u/mr-sairaj-nanda)\
**Replies:** 3\
**Last updated:** [September 18, 2025, 7:59pm UTC](https://forum.crunchdao.com/t/module-error-please-explain/1036 "2025-09-18T19:59:28Z")
@enzo In submission terminal logs “NameError: name ‘pycatch22’ is not defined” I am getting this error though i am doing pip install can you please explain what could be the possible issues.
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## [Query regarding keras/tensorflow NN models](https://forum.crunchdao.com/t/query-regarding-keras-tensorflow-nn-models/1043)
**Author:** [@mr-sairaj-nanda](https://forum.crunchdao.com/u/mr-sairaj-nanda)\
**Replies:** 1\
**Last updated:** [September 26, 2025, 2:17pm UTC](https://forum.crunchdao.com/t/query-regarding-keras-tensorflow-nn-models/1043 "2025-09-26T14:17:43Z")
Hi @enzo I am planning to use Keras/tensorflow NN models is there any specific approach to use them ?