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Model description

This is the T5-3B model for System 3 DREAM-FLUTE (motivation), as described in our paper Just-DREAM-about-it: Figurative Language Understanding with DREAM-FLUTE, FigLang workshop @ EMNLP 2022 (Arxiv link: https://arxiv.org/abs/2210.16407)

Systems 3: DREAM-FLUTE - Providing DREAM’s different dimensions as input context

We adapt DREAM’s scene elaborations (Gu et al., 2022) for the figurative language understanding NLI task by using the DREAM model to generate elaborations for the premise and hypothesis separately. This allows us to investigate if similarities or differences in the scene elaborations for the premise and hypothesis will provide useful signals for entailment/contradiction label prediction and improving explanation quality. The input-output format is:

Input <Premise> <Premise-elaboration-from-DREAM> <Hypothesis> <Hypothesis-elaboration-from-DREAM>
Output <Label> <Explanation>

where the scene elaboration dimensions from DREAM are: consequence, emotion, motivation, and social norm. We also consider a system incorporating all these dimensions as additional context.

In this model, DREAM-FLUTE (motivation), we use elaborations along the "motivation" dimension. For more details on DREAM, please refer to DREAM: Improving Situational QA by First Elaborating the Situation, NAACL 2022 (Arxiv link: https://arxiv.org/abs/2112.08656, ACL Anthology link: https://aclanthology.org/2022.naacl-main.82/).

How to use this model?

We provide a quick example of how you can try out DREAM-FLUTE (motivation) in our paper with just a few lines of code:

>>> from transformers import AutoTokenizer, AutoModelForSeq2SeqLM
>>> model = AutoModelForSeq2SeqLM.from_pretrained("allenai/System3_DREAM_FLUTE_motivation_FigLang2022")

>>> tokenizer = AutoTokenizer.from_pretrained("t5-3b")
>>> input_string =  "Premise: After years of service and contribution to the company, he was finally promoted. [Premise - motivation] Company's motivation is to recognize his hard work. Hypothesis: The company released him after many years of service. [Hypothesis - motivation] Company's motivation is to get someone else to work. Is there a contradiction or entailment between the premise and hypothesis?"
>>> input_ids = tokenizer.encode(input_string, return_tensors="pt")
>>> output = model.generate(input_ids, max_length=200)
>>> tokenizer.batch_decode(output, skip_special_tokens=True)
['Answer : Contradiction. Explanation : To release someone means to let them go from a position, while to promote someone means to give them a higher position.']

More details about DREAM-FLUTE ...

For more details about DREAM-FLUTE, please refer to our:

This model is part of our DREAM-series of works. This is a line of research where we make use of scene elaboration for building a "mental model" of situation given in text. Check out our GitHub Repo for more!

More details about this model ...

Training and evaluation data

We use the FLUTE dataset for the FigLang2022SharedTask (https://huggingface.co/datasets/ColumbiaNLP/FLUTE) for training this model. ∼7500 samples are provided as the training set. We used a 80-20 split to create our own training (6027 samples) and validation (1507 samples) partitions on which we build our models. For details on how we make use of the training data provided in the FigLang2022 shared task, please refer to https://github.com/allenai/dream/blob/main/FigLang2022SharedTask/Process_Data_Train_Dev_split.ipynb.

Model details

This model is a fine-tuned version of t5-3b.

It achieves the following results on the evaluation set:

  • Loss: 0.7515
  • Rouge1: 58.2308
  • Rouge2: 38.281
  • Rougel: 52.0293
  • Rougelsum: 52.0425
  • Gen Len: 40.5912

Training procedure

Training hyperparameters

The following hyperparameters were used during training:

  • learning_rate: 5e-05
  • train_batch_size: 1
  • eval_batch_size: 1
  • seed: 42
  • distributed_type: multi-GPU
  • num_devices: 2
  • total_train_batch_size: 2
  • total_eval_batch_size: 2
  • optimizer: Adam with betas=(0.9,0.999) and epsilon=1e-08
  • lr_scheduler_type: linear
  • num_epochs: 3.0

Training results

Training Loss Epoch Step Validation Loss Rouge1 Rouge2 Rougel Rougelsum Gen Len
0.9996 0.33 1000 0.8940 39.4794 27.1937 37.848 37.8416 18.9980
0.9033 0.66 2000 0.8276 41.3816 29.2481 39.5342 39.514 18.9987
0.8713 1.0 3000 0.7840 41.392 29.7142 39.642 39.6292 19.0
0.5631 1.33 4000 0.8079 41.1312 29.9449 39.5757 39.5775 19.0
0.5577 1.66 5000 0.7781 41.4609 30.3437 39.9114 39.8902 19.0
0.5426 1.99 6000 0.7515 41.9285 30.9247 40.3207 40.3087 19.0
0.33 2.32 7000 0.8601 41.6921 30.9567 40.1845 40.1805 18.9954
0.3442 2.65 8000 0.8910 41.5437 31.0748 40.1653 40.1579 18.9861
0.3474 2.99 9000 0.8354 41.8455 31.4446 40.5079 40.5116 18.9907

Framework versions

  • Transformers 4.22.0.dev0
  • Pytorch 1.12.1+cu113
  • Datasets 2.4.0
  • Tokenizers 0.12.1
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