Issues

• Bug Report: RobustScaler.transform_one() causes Rust panic (unwrap() on None) after learn_one() receives a NaN value

  online-ml/river#2057 · Filter by author RugvedBane opened on Oct 14, 2026
  1

• rules.AMRules can overwrite a rule, because rules are keyed by their memory address

  online-ml/river#2052 · Filter by author FBruzzesi opened on Oct 8, 2026

• MultivariateGaussian.cdf returns different results depending on dictionary key order

  online-ml/river#2049 · Filter by author RoopakBRK opened on Oct 8, 2026
  2

• Umbrella: bugs found while auditing river.stream

  online-ml/river#2048 · Filter by author FBruzzesi opened on Oct 7, 2026
  3

• stream.iter_array crashes or silently misaligns rows for several supported inputs

  online-ml/river#2046 · Filter by author FBruzzesi opened on Oct 7, 2026
  1

• Precision, Recall, F1/FBeta, Jaccard and MCC ignore the predictions when pos_val is not True/1

  online-ml/river#2032 · Filter by author shaurya416 opened on Sep 28, 2026
  4

• Calibrated forecast features beat StandardScaler pipelines on river's own datasets — evidence, a companion package, and a PR offer

  Needs researchingNew feature
  online-ml/river#1946 · Filter by author microprediction opened on Jul 9, 2026
  2

• Strict typing all modules

  Code quality
  online-ml/river#1944 · Filter by author mugulmd opened on Jul 6, 2026
  20

• Implement Bayesian logistic regression

  Needs researchingNew feature
  online-ml/river#1917 · Filter by author MaxHalford opened on Jun 24, 2026
  4

• Drift module roadmap: broaden detector coverage + build an evaluation harness (6-month focus)

  Enhancement
  online-ml/river#1914 · Filter by author MaxHalford opened on Jun 23, 2026
  20

• Explore: move linear_model mini-batch learning into Rust (true per-sample SGD)

  EnhancementNeeds researching
  online-ml/river#1912 · Filter by author MaxHalford opened on Jun 23, 2026

• FSRS

  Needs researchingNew feature
  online-ml/river#1840 · Filter by author MaxHalford opened on Apr 27, 2026
  1

• Make AMF estimators drift resilient

  EnhancementNeeds researching
  online-ml/river#1826 · Filter by author MaxHalford opened on Apr 15, 2026
  4

• Run River on MicroPython

  Needs researching
  online-ml/river#1811 · Filter by author MaxHalford opened on Apr 14, 2026

• Feature Request: Online Limited Memory BFGS

  New feature
  online-ml/river#1725 · Filter by author linjing-lab opened on Nov 13, 2025

• Feature request: Extremely Fast Hoeffding Adaptive Tree

  Enhancement
  Feature

  online-ml/river#1718 · Filter by author jsvobo opened on Nov 5, 2025

• Controlling the cleanup of DBStream

  Enhancement
  online-ml/river#1709 · Filter by author zhongmiaoretell opened on Sep 16, 2025
  5

• Quantile Regression Approaches

  Enhancement
  online-ml/river#1618 · Filter by author cdeterman opened on Sep 24, 2024
  1

• Global Split Criteria for Decision Trees

  Enhancement
  online-ml/river#1612 · Filter by author danielnowakassis opened on Sep 9, 2024

• Online AUC Maximization

  Needs researching
  online-ml/river#1475 · Filter by author MaxHalford opened on Dec 16, 2023

• Online Decision Making for Trading Wind Energy

  Needs researching
  online-ml/river#1434 · Filter by author MaxHalford opened on Nov 1, 2023
  2

• Professional-grade mypy conf

  Code quality
  online-ml/river#1430 · Filter by author MaxHalford opened on Nov 1, 2023
  5

• Conditional random fields

  New feature
  online-ml/river#1426 · Filter by author MaxHalford opened on Nov 1, 2023

• Nyström kernel method

  New feature
  online-ml/river#1425 · Filter by author MaxHalford opened on Nov 1, 2023

• Savitzky-Golay filter

  New feature
  online-ml/river#1424 · Filter by author MaxHalford opened on Nov 1, 2023
  1