set top_k to 5 in SAS to be consistent

[ClaMnc]

-The change refers to the top_k value of the retriever in the Advanced Evaluation Metrics in the Tutorial5_Evaluation.py.

The actual value is set to 1 which is both suboptimal and inconsistent with all the previous utilized values of top_k for the retriever (equal to 5). Trying the script with other values leads to better SAS results. For example, setting it to 5 (to be consistent with the previous values) results in 0.528 compared to 0.443 using top_k = 1.

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[Timoeller]

Thanks for the change. This configuration really does not make much sense here.

Since we have two Tutorial versions (python script and jupyter notebook) could you also change the other one, please?

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[Timoeller]

LG

[julian-risch]

@ClaMnc congratulations to your first small PR in Haystack! 🎉 Looking forward to more contributions from you!
Small note on that: If you mention closes #2549 in the description of your pull request, it will automatically close the issue once the pull request is merged. Otherwise one of our team members might try to understand and solve the issue when you already have a pull request open. 🙂 Thank you @ZanSara for illustrating that here. 😉
@Timoeller please also not forget to add a label before merging a PR. Thank you!