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Reinforcement Learning with TensorFlow
book

Reinforcement Learning with TensorFlow

by Sayon Dutta
April 2018
Intermediate to advanced content levelIntermediate to advanced
334 pages
10h 18m
English
Packt Publishing
Content preview from Reinforcement Learning with TensorFlow

BLEU

One of the biggest challenges in sequential models in NLP used in machine translation, text summarization, image captioning, and much more is an adequate metric for evaluation.

Suppose your use case is machine translation; you have a German phrase and there are multiple English translations of it. All of them look equally good. So, how do you evaluate a machine translation system if there are multiple equally good answers? This is unlike image recognition, where the target has only one right answer and not multiple, equally good right answers.

For example:

  • German sentence: Die Katze ist auf der Matte

A multiple reference human-generated translation of the preceding German sentence is as follows:

  • The cat is on the mat
  • There is a cat ...
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Publisher Resources

ISBN: 9781788835725Supplemental Content