perplexity Hugging Face GPT-2 Perplexity Activate python 3.7 Hugging Face environment: conda activate hf37 System Info: NVIDIA Driver: 418.56 CUDA version: 7.5.17 Python version: 3.7 PyTorch version: 0.4.1 (Compatible with CUDA 7.5) Tokenizers: 0.10.1 Transformers 4.6.1 References: https://github.com/Darg-Iztech/perplexity https://www.cs.cornell.edu/~cristian/memorability.html