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GPTScore: Evaluate as You Desire

This is the Source Code of Paper: GPTScore: Evaluate as You Desire.

What is GPTScore?

GPTScore is a novel evaluation framework that utilizes the emergent abilities (e.g., zero-shot instruction) of Generative Pre-Trained models to Score generated texts.

GPTScore evaluation framework support:

1. Customizable. Customized instructions and demonstrations enable the evaluation of new aspects without labeled datasets;
2. Multifaceted. One evaluator performs multifaceted evaluations;
3. Training-free.

What PLMs does GPTScore support?

We explored 19 Pre-trained Language Models (PLMs) ranging in size from 80M (FLAN-T5-Small) to 175B (GPT3) to design GPTScore. <br> The PLMs studied in this paper are listed as follows:

• Evaluator Name indicates the name of the evaluator corresponding to the Model name in the first column.

Usage

Use the GPT3-based model as the evaluator

Take the evaluation of GPT3-text-curie-001 model as an example.

• Setting gpt3_score to True: the GPTScore evaluator uses a GPT3-based PLM.
• Setting gpt3model to curie: the text-curie-001 model is utilized.
• out_dir_name: set the folder for saving scoring results.
• dataname: set the dataset name for evaluation (e.g., BAGEL).
• aspect: set the aspect name to be evaluated (e.g., quality).

1. GPTScore with Instruction and Demonstration

Set both the use_demo and use_ist as True. </br>

python score_d2t.py 
--dataname "BAGEL" 
--use_demo True 
--use_ist True 
--gpt3_score True 
--gpt3model "curie" 
--out_dir_name "gpt3Score_based"  
--aspect 'quality'

2. GPTScore with only Instruction

Set the use_ist to True and use_demo to False. </br>

python score_d2t.py 
--dataname "BAGEL" 
--use_demo False 
--use_ist True 
--gpt3_score True 
--gpt3model "curie" 
--out_dir_name "gpt3Score_based"  
--aspect 'quality'

3. GPTScore without both Instruction and Demonstration

Set the use_ist to False and use_demo to False. </br>

python score_d2t.py 
--dataname "BAGEL" 
--use_demo False 
--use_ist False 
--gpt3_score True 
--gpt3model "curie" 
--out_dir_name "gpt3Score_based"  
--aspect 'quality'

Use the non-GPT3-based model (e.g., OPT) as the evaluator

Here, we take the evaluation of OPT350M model as an example.

• Setting opt350m_score to True: use the evaluator named opt350m_score.
• out_dir_name: set the folder for saving scoring results.
• dataname: set the dataset name for evaluation (e.g., BAGEL).
• aspect: set the aspect name to be evaluated (e.g., quality).

1. opt350m_score with Instruction and Demonstration

Set both the use_demo and use_ist as True. </br>

python score_d2t.py 
--dataname "BAGEL" 
--use_demo True 
--use_ist True 
--opt350m_score True 
--out_dir_name "optScore_based"  
--aspect 'quality'

2. opt350m_score with only Instruction

Set the use_ist to True and use_demo to False. </br>

python score_d2t.py 
--dataname "BAGEL" 
--use_demo False 
--use_ist True 
--opt350m_score True 
--out_dir_name "optScore_based"  
--aspect 'quality'

3. opt350m_score without both Instruction and Demonstration

Set the use_ist to False and use_demo to False. </br>

python score_d2t.py 
--dataname "BAGEL" 
--use_demo False 
--use_ist False 
--opt350m_score True 
--out_dir_name "optScore_based"  
--aspect 'quality'

Bib

@article{fu2023gptscore,
  title={GPTScore: Evaluate as You Desire},
  author={Fu, Jinlan and Ng, See-Kiong and Jiang, Zhengbao and Liu, Pengfei},
  journal={arXiv preprint arXiv:2302.04166},
  year={2023}
}