1.先認識Example數據格式
1條Example數據:
features {
feature { key: "age" value { int64_list { value: [ 0 ] } } }
feature { key: "gender" value { bytes_list { value: [ "f" ] } } }
}
2條Example數據:
[
features {
feature { key: "age" value { int64_list { value: [ 0 ] } } }
feature { key: "gender" value { bytes_list { value: [ "f" ] } } }
},
features {
feature { key: "age" value { int64_list { value: [] } } }
feature { key: "gender" value { bytes_list { value: [ "f" ] } } }
}
]
2.tensorflow解析Example數據
tf.io.parse_example(
serialized,
features,
name=None,
example_names=None
)
參數:
- serialized:表示向量字符串,是一維Tensor,是二進制序列化Example protos
- features:表示一個字典,將特徵 keys 映射到FixedLenFeature、VarLenFeature、SparseFeature 值
- name:算子的名稱
輸出:
輸出一個字典格式數據,是將特徵keys映射到Tensor、SparseTensor值