SavedModelBundle Unable to Load Models with coo_sparse Encoded Input

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难度
4/5
预计耗时
3-5 天
新手友好度
35/100
Issue 类型
缺陷
描述清晰度
基本清楚
活跃度
停滞
技术栈
java
领域
machine-learning

调研方向

从 TensorFlow Java 的 TensorFunction.java 和 Signature.java 开始，然后将它们对 TensorInfo 的处理与 meta_graph.proto 中的 coo_sparse oneof 进行比较。复现所述 SavedModelBundle 的加载，并确定是否需要更改 validation 或模型加载；当已确定受支持的行为，并通过适当的 regression check 覆盖，或将其记录为不受支持时，即视为完成。

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描述

Was trying to load a model using SavedModelBundle.load(savedModelPath, "serve") but ran into the operand "" does not exist on the graph issue. Error log:
empty_operand_error_log_censored

Looking into Tensorflow Java source code this error is raised here.

And by inspecting the model being loaded the corresponding input tensor is coo_sparse encoded:
coo_sparse_encoded_censored

It appears to me that when building TensorDescription the library doesn't take coo_sparse encoded format into account: code link: it's trying to fetch the name field which is always empty for coo_sparse encoded format, because together with the name field it's oneof in TensorInfo proto: code link.

Is this a known unsupported feature or would the model loading just work if the validation is bypassed?

主要语言
Java
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