Issues

• [FAQ] Homework 2 (2026) Q4: Why does RMSE get worse as regularization r increases (best r = 0)?

  DataTalksClub/faq#446 · Filter by author ErickOtuomaAI opened on Oct 8, 2026

• [FAQ] : Homework 3 Q4 - DictVectorizer vs pd.get_dummies for one-hot encoding

  faq-proposal
  DataTalksClub/faq#444 · Filter by author yazdanparasthesam opened on Oct 7, 2026
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• [FAQ] Homework 2 (2026): My answer doesn't exactly match any option. Can I pick the closest one?

  faq-proposal
  DataTalksClub/faq#442 · Filter by author Mufado opened on Oct 7, 2026
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• [FAQ] HW4 Q6: Grafana alert fires but the webhook never reaches the incident responder on localhost:8001

  DataTalksClub/faq#441 · Filter by author ErickOtuomaAI opened on Oct 6, 2026

• [FAQ] HW4: provisioned Grafana alert rule stays Normal while 5xx are live — masked evaluator build error (reduce/threshold missing expression: input)

  faq-proposal
  DataTalksClub/faq#440 · Filter by author yazdanparasthesam opened on Oct 6, 2026
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• [FAQ] Why can't the headless Claude Code agent run uv, docker compose or curl on Windows even though they are in --allowedTools?

  faq-proposal
  DataTalksClub/faq#439 · Filter by author mrfmanuel opened on Oct 5, 2026

• [FAQ] Homework 2 Q3 - why do fill-with-0 and fill-with-mean look identical?

  faq-proposal
  DataTalksClub/faq#437 · Filter by author yazdanparasthesam opened on Oct 5, 2026

• [FAQ] Why do we combine the training and validation datasets before the final test?

  faq-proposal
  DataTalksClub/faq#436 · Filter by author AMIRABBASBF2027 opened on Oct 5, 2026
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• [FAQ] Why should missing-value mean be calculated only from the training data?

  faq-proposal
  DataTalksClub/faq#435 · Filter by author Nilo0far opened on Oct 5, 2026

• [FAQ] curl -i prompts for Uri in Windows PowerShell

  faq-proposal
  DataTalksClub/faq#433 · Filter by author ThAu-Tr opened on Oct 5, 2026
  1

• Why do my Homework 2 (2026) answers not match any option — my RMSE is ~0.46 instead of 0.236 or 22.10?

  DataTalksClub/faq#432 · Filter by author marcos-Nieves-24 opened on Oct 5, 2026

• [FAQ]

  faq-proposal
  DataTalksClub/faq#430 · Filter by author kunlemariam08 opened on Oct 5, 2026
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• Performance warning when encoding categorical values

  faq-proposal
  DataTalksClub/faq#428 · Filter by author huyyhoangtr-boop opened on Oct 5, 2026
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• Q6 FAQ — Why does my calculated RMSE not match the answer options?

  faq-proposal
  DataTalksClub/faq#426 · Filter by author PranayIngole7 opened on Oct 5, 2026
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• [FAQ] Module 2: LinAlgError: Singular matrix instead of huge weights in the 5.00000001 regularization example

  faq-proposal
  DataTalksClub/faq#424 · Filter by author andrew-chung-au opened on Oct 4, 2026
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• [FAQ] Module 1: Why can filling missing values change the median?

  DataTalksClub/faq#423 · Filter by author c-ibarra opened on Oct 3, 2026

• [FAQ] Grafana alert provisioned from YAML: label shows "{{ .http_route }}" instead of the route

  faq-proposal
  DataTalksClub/faq#422 · Filter by author Sanjomwa opened on Oct 3, 2026
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• FAQ: Homework 1 Q6 - why does the horsepower median change after fillna with the mode?

  faq-proposal
  DataTalksClub/faq#420 · Filter by author yazdanparasthesam opened on Oct 1, 2026
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• [FAQ] Module 4 Homework Q3: How do I find the request metric, its log and its trace in Grafana?

  faq-proposal
  DataTalksClub/faq#419 · Filter by author andrew-chung-au opened on Sep 30, 2026
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• [PostgreSQL connection in Kubernetes]

  faq-proposal
  DataTalksClub/faq#417 · Filter by author youssef-ham opened on Sep 24, 2026
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• [FAQ] HW3 with act: the postgres service is "healthy" but the API dies with "connection refused" on localhost:5432

  faq-proposal
  DataTalksClub/faq#415 · Filter by author yazdanparasthesam opened on Sep 24, 2026
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• [FAQ] Module 1: Why are there still missing values after I use the fillna() method?

  faq-proposal
  DataTalksClub/faq#413 · Filter by author andrew-chung-au opened on Sep 22, 2026
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• [FAQ] Agent Relay: Why Can’t I See My Completed Task in the Dashboard?

  faq-proposal
  DataTalksClub/faq#411 · Filter by author ThAu-Tr opened on Sep 21, 2026
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• [FAQ]

  faq-proposal
  DataTalksClub/faq#409 · Filter by author Sanjomwa opened on Sep 17, 2026
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• [FAQ]

  faq-proposal
  DataTalksClub/faq#407 · Filter by author chakirou18 opened on Sep 17, 2026
  2