4th-batch-16-函数变量未被使用 #75756
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4th-batch-16-函数变量未被使用 #75756
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PR Category
Execute Infrastructure
PR Types
Bug fixes
Description
第四批-编号16（共1个）
__getitem__方法本应根据传入的index返回对应的一个样本或一组数据切片，但当前实现中完全忽略index参数，每次都重新生成整个网格空间（共100个点）以及边界条件索引（36个点）。这意味着无论index是多少，返回的数据都是完整且相同的结构，导致数据加载逻辑错误，破坏了 Dataset 的迭代机制。修复后的
__getitem__使用index来选择具体的输入点（例如 domain 中的某个坐标点），同时保留共享的边界信息（bc_index 和 bc_value）。这样每个样本可以独立访问，符合Dataset接口要求。此外，可通过种子控制随机性以保证可复现性。若需更复杂的采样策略，可在初始化时预生成所有样本。