The parameters of the likelihood model assume invalid values during training.
貢獻者指南
技術棧
pythonpytorch
領域
machine learningdata
議題類型
bug
難度面向新貢獻者的預計實作難度,1 表示很小改動,5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
1-3 hours
活動狀態議題目前的可參與程度:新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
needs investigation
前置要求
Basic understanding of probabilistic modelsFamiliarity with PyTorch
新手友善度1-100 的估計分數,表示該議題對首次貢獻者的友善程度。
20
研究方向
Investigate the NegativeBinomialLikelihood class in the darts codebase, likely in darts/models/likelihood.py or similar. The issue states that parameters assume invalid values during training, so check for parameter constraints (e.g., variance greater than mean) and ensure proper initialization or clamping. Look at the training loop for any gradient issues or unbounded parameter updates. Since there are no comments or PRs, a good starting point is to reproduce the error with a minimal example and trace the parameter values.