A process that fills in specific words into a delexicalized sentence. For example, it takes the following delexicalized sentence from:

restaurant_name has decent service

to:

Au Midi has decent service


Relexicalization

The opposite process of delexicalization.

Hamilton College

Delexicalization is the process of replacing specific words in the training set that represent slot values with a generic placeholder token representing the slot, as shown below:

Delexicalization

An on-going but a helpful book resource about NLP
https://web.stanford.edu/~jurafsky/slp3/

Speech and Language Processing (3rd ed. draft) 

There are models that help the mapping from frames to delexicalized sentences.

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