课程背景与深度学习可复现性危机
随着我们从简单的自包含模型转向里程碑项目1所需的复杂多阶段架构，手动在电子表格或本地文件中追踪关键参数已完全不可持续。这种复杂的流程对开发完整性带来了严重风险。
1. 识别复现瓶颈
深度学习工作流本身由于众多变量（优化算法、数据子集、正则化技术、环境差异）的存在而具有高度变异性。若缺乏系统性追踪，复现特定历史结果——这对调试或改进已部署模型至关重要——往往变得不可能。
必须追踪什么？
超参数： All configuration settings must be recorded (e.g., Learning Rate, Batch Size, Optimizer choice, Activation function).
环境状态： Software dependencies, hardware used (GPU type, OS), and exact package versions must be fixed and recorded.
成果与结果： Pointers to the saved model weights, final metrics (Loss, Accuracy, F1 score), and training runtime must be stored.
The "Single Source of Truth" (SSOT)
Systematic experiment tracking establishes a central repository—a SSOT—where every choice made during model training is recorded automatically. This eliminates guesswork and ensures reliable auditability across all experimental runs.
终端bash — tracking-env
> 准备就绪。点击“运行概念追踪”以查看工作流程。
>
实验追踪实时
Simulate the run to visualize the trace data captured.
问题 1
深度学习可复现性危机的根本原因是什么？
问题 2
在 MLOps 的背景下，为什么系统化的实验追踪对生产至关重要？
问题 3
哪一个要素对于复现结果是必需的，但在手动追踪中却最常被忽略？
挑战：过渡期的追踪
为何向正式追踪的过渡是不可妥协的。
You are managing 5 developers working on Milestone Project 1. Each developer reports their best model accuracy (88% to 91%) in Slack. No one can reliably tell you the exact combination of parameters or code used for the winning run.
步骤 1
必须立即实施哪一步骤来阻止关键信息的丢失？
解决方案：
Implement a mandatory requirement for every run to be registered with an automated tracking system before results are shared, capturing the full hyperparameter dictionary and Git hash.
Implement a mandatory requirement for every run to be registered with an automated tracking system before results are shared, capturing the full hyperparameter dictionary and Git hash.
步骤 2
结构化追踪为团队带来的好处是什么，而共享电子表格无法提供？
解决方案：
Structured tracking allows automated comparison dashboards, visualizations of parameter importance, and centralized artifact storage, which is impossible with static spreadsheets.
Structured tracking allows automated comparison dashboards, visualizations of parameter importance, and centralized artifact storage, which is impossible with static spreadsheets.