tf.lookup.StaticHashTable      View source on GitHub    A generic hash table that is immutable once initialized. Inherits From: TrackableResource 
tf.lookup.StaticHashTable(
    initializer, default_value, name=None, experimental_is_anonymous=False
)
 Example usage: 
keys_tensor = tf.constant(['a', 'b', 'c'])
vals_tensor = tf.constant([7, 8, 9])
input_tensor = tf.constant(['a', 'f'])
table = tf.lookup.StaticHashTable(
    tf.lookup.KeyValueTensorInitializer(keys_tensor, vals_tensor),
    default_value=-1)
table.lookup(input_tensor).numpy()
array([ 7, -1], dtype=int32)
 Or for more pythonic code: 
table[input_tensor].numpy()
array([ 7, -1], dtype=int32)
 The result of a lookup operation has the same shape as the argument: 
input_tensor = tf.constant([['a', 'b'], ['c', 'd']])
table[input_tensor].numpy()
array([[ 7,  8],
       [ 9, -1]], dtype=int32)

 


 Args
  initializer   The table initializer to use. See HashTable kernel for supported key and value types.  
  default_value   The value to use if a key is missing in the table.  
  name   A name for the operation (optional).  
  experimental_is_anonymous   Whether to use anonymous mode for the table (default is False). In anonymous mode, the table resource can only be accessed via a resource handle. It can't be looked up by a name. When all resource handles pointing to that resource are gone, the resource will be deleted automatically.   
 


 Attributes
  default_value   The default value of the table.  
  key_dtype   The table key dtype.  
  name   The name of the table.  
  resource_handle   Returns the resource handle associated with this Resource.  
  value_dtype   The table value dtype.    Methods export View source 
export(
    name=None
)
 Returns tensors of all keys and values in the table.
 


 Args
  name   A name for the operation (optional).   
 


 Returns   A pair of tensors with the first tensor containing all keys and the second tensors containing all values in the table.  
 lookup View source 
lookup(
    keys, name=None
)
 Looks up keys in a table, outputs the corresponding values. The default_value is used for keys not present in the table.
 


 Args
  keys   Keys to look up. May be either a SparseTensor or dense Tensor.  
  name   A name for the operation (optional).   
 


 Returns   A SparseTensor if keys are sparse, a RaggedTensor if keys are ragged, otherwise a dense Tensor.  

 


 Raises
  TypeError   when keys or default_value doesn't match the table data types.    size View source 
size(
    name=None
)
 Compute the number of elements in this table.
 


 Args
  name   A name for the operation (optional).   
 


 Returns   A scalar tensor containing the number of elements in this table.  
 __getitem__ View source 
__getitem__(
    keys
)
 Looks up keys in a table, outputs the corresponding values.  

    
{'path': 'public/docs/tensorflow~2.9/lookup/statichashtable.html', 'source': 'DevDocs.IO'}