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Add description to card metadata (#1)

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- Add description to card metadata (c8cfb631d922305377c0dad9e73766f996d60bae)

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  1. README.md +11 -3
README.md CHANGED
@@ -8,10 +8,18 @@ sdk_version: 3.0.2
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  app_file: app.py
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  pinned: false
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  tags:
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- - evaluate
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- - metric
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- ---
 
 
 
 
 
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  # Metric Card for Perplexity
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  ## Metric Description
 
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  app_file: app.py
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  pinned: false
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  tags:
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+ - evaluate
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+ - metric
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+ description: >-
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+ Perplexity (PPL) is one of the most common metrics for evaluating language
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+ models.
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+
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+ It is defined as the exponentiated average negative log-likelihood of a
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+ sequence.
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+
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+ For more information, see https://huggingface.co/docs/transformers/perplexity
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+ ---
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  # Metric Card for Perplexity
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  ## Metric Description