CAHLR/pyBKT

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• The pure Python version runs each expectation step about 550 times slower than C++

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  CAHLR/pyBKT#84 · Opened Oct 9, 2026

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• `convert_data` scans every row once per skill and takes most of `Model.fit`'s time

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  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  CAHLR/pyBKT#83 · Opened Oct 9, 2026

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• `predict` never matches skills whose names contain regex characters, and `fit` skips them in a list of names

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  Difficulty 2/5 1-3 hours Newbie friendliness 82/100

  CAHLR/pyBKT#82 · Opened Oct 9, 2026

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• `fit` ignores rows with a missing `user_id`, and `predict` gives them values that aren't probabilities

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  Difficulty 3/5 1-2 days Newbie friendliness 55/100

  CAHLR/pyBKT#81 · Opened Oct 9, 2026

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• `Roster.update_state` with an array of responses and one `multilearn` class reads past the end of `resources`

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  Difficulty 3/5 1-2 days Newbie friendliness 50/100

  CAHLR/pyBKT#78 · Opened Oct 9, 2026

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• The C++ version reads 64-bit `data` as 32-bit, so `Roster` and `crossvalidate(folds=<column name>)` give wrong results

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  Difficulty 3/5 1-2 days Newbie friendliness 62/100

  CAHLR/pyBKT#77 · Opened Oct 9, 2026

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• Expose constant-time incremental `update` API for production deployments

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  Difficulty 5/5 Over a week Newbie friendliness 35/100

  CAHLR/pyBKT#57 · 1 reaction · Opened Nov 3, 2025

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• Feature Request: Support for Incremental / Online Updates in pyBKT

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  Difficulty 5/5 Over a week Newbie friendliness 25/100

  CAHLR/pyBKT#55 · Opened Oct 4, 2025

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• random.randint(0, 1e8), function does not accept 1e8 as it is a float

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  Difficulty 1/5 Under an hour Newbie friendliness 45/100

  CAHLR/pyBKT#54 · 1 comment · Opened Jul 6, 2025

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• ModuleNotFoundError : No module named 'pyBKT'

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  Difficulty 3/5 1-2 days Newbie friendliness 20/100

  CAHLR/pyBKT#53 · Opened Jun 20, 2025

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• How can I save the fitted model?

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  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  CAHLR/pyBKT#52 · 1 comment · Opened Feb 2, 2025

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• Error when using a model trained with multigs=True with the Roster class

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  CAHLR/pyBKT#50 · 2 comments · Opened Apr 29, 2024

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• Issue Running Tutorial

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  Difficulty 3/5 1-2 days Newbie friendliness 35/100

  CAHLR/pyBKT#49 · 2 comments · 1 reaction · Opened Feb 19, 2024

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• Split train test data at sequence level

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  CAHLR/pyBKT#47 · 1 comment · Opened Sep 26, 2023

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• Issues with evaluating multilearn models using fit-evaluate or crossvalidation

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  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  CAHLR/pyBKT#45 · 1 comment · 1 reaction · Opened Aug 30, 2023

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• Optional SQUAREM acceleration and beta priors for fitting

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  Difficulty 5/5 Over a week Newbie friendliness 15/100

  CAHLR/pyBKT#85 · 2 comments · Opened Oct 9, 2026

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• An unstable sort reorders responses that share an `order_id`, so the same data can give different fits

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  Difficulty 2/5 1-3 hours Newbie friendliness 85/100

  CAHLR/pyBKT#80 · Opened Oct 9, 2026

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• C++ E-step returns the log-likelihood as an integer, so fitting stops early

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  Difficulty 2/5 1-3 hours Newbie friendliness 78/100

  CAHLR/pyBKT#79 · Opened Oct 9, 2026

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• Publishing compiled wheels, and making scikit-learn optional

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  Difficulty 4/5 3-5 days Newbie friendliness 22/100

  CAHLR/pyBKT#65 · 2 comments · 3 reactions · Opened Oct 8, 2026

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