This is the code of the Findings of ACL 2022 paper: Inverse is Better! Fast and Accurate Prompt for Few-shot Slot Tagging.

python >= 3.6.13
torch >= 1.10.2
transformers >= 4.10.2

• Download prompted few-shot data at download data.
• You can also generate data using original_data and utils:
  • train data for snips using preprocessor.py,other data (dev and test data) using rechecker_preprocessor.py
  • change the path in __main__
• few-shot original data example：

{
  "domain_name": [
    {  // episode
      "support": {  // support set
        "seq_ins": [["we", "are", "friends", "."], ["how", "are", "you", "?"]],  // input sequence
        "seq_outs": [["O", "O", "O", "O"], ["O", "O", "O", "O"]]  // output sequence in sequence labeling task
      },
      "query": {  // query set
        "seq_ins": [["we", "are", "friends", "."], ["how", "are", "you", "?"]],
        "seq_outs": [["O", "O", "O", "O"], ["O", "O", "O", "O"]]
      }
    },
    ...
  ],
  ...
}

• few-shot prompted data example：

{
  "domain_name": [
    {  // episode
      "domain": "domain_name"
      "support": {  // support set
        "original_seq_in": [["Jack", "is", "my", "friend", "."], ["how", "are", "you", "?"]],  // input sequence
        "original_seq_out": [["B-name", "O", "O", "O", "O"], ["O", "O", "O", "O"]],  // output sequence in sequence labeling task
	"prompt_seq_in": [["'", "Jack", "is", "my", "friend", ".", "'", "name", "refers", "to"]...],
	"prompt_seq_out": [["'", "Jack", "is", "my", "friend", ".", "'", "name", "refers", "to", "Jack"]...],
	"checker_prompt_in": [["'", "Jack", "is", "my", "friend", ".", "'", "name", "refers", "to", "Jack", ".", "loaction", "refers", "to"]...],
	"checker_prompt_out": [["'", "Jack", "is", "my", "friend", ".", "'", "name", "refers", "to", "Jack", ".", "loaction", "refers", "to", "none"]...]
      },
      "query": {  // query set
      	"domain": "domain_name",
        "original_seq_in": [["Jack", "is", "my", "friend", "."], ["how", "are", "you", "?"]],  // input sequence
        "original_seq_out": [["O", "O", "O", "O"], ["O", "O", "O", "O"]],  // output sequence in sequence labeling task
	"prompt_seq_in": [["'", "Jack", "is", "my", "friend", ".", "'", "name", "refers", "to"]...],
	"prompt_seq_out": [["'", "Jack", "is", "my", "friend", ".", "'", "name", "refers", "to", "Jack"]...]
      }
    },
    ...
  ],
  ...
}

• For MIT data(In-domain): For example, ./prompt_data/MIT_M/prompt_MIT_M/mit_m.10_shot.json is the path for prompted 10-shot MIT_movie data.

  • Then you need to:
    • set test_path in ./scripts/mit/mit_m.sh as ./prompt_data/MIT_M/prompt_MIT_M/ (the / at the end is needed).
    • set test_file in ./scripts/mit/mit_m.sh as mit_m.10_shot.
    • set data_set in ./scripts/mit/mit_m.sh as mit
    • mkdir pred
    • mkdir model_selection

• For SNIPS data(Meta-Source Transfer): For example, ./prompt_data/snips/prompt_snips/snips_train_2.json, ./prompt_data/snips/prompt_snips/snips_dev_2.json and ./prompt_data/snips/prompt_snips/snips_test_2.json is the train, dev and test path for the 2nd of 7 domain of prompted 1-shot SNIPS data. (the last number of the file name is the domain number).

  • Then you need to:
    • set train_path, dev_path and test_path in ./scripts/snips/snips.sh as ./prompt_data/snips/prompt_snips/ (the / at the end is needed).
    • set train_file in ./scripts/snips/snips.sh as snips_train_2.
    • set dev_file in ./scripts/snips/snips.sh as snips_dev_2.
    • set test_file in ./scripts/snips/snips.sh as snips_test_2.
    • set data_set in ./scripts/snips/snips.sh as snips
    • mkdir pred
    • mkdir model_selection
    • mkdir model
    • mkdir ft_model

source ./scripts/mit/mit_m.sh

source ./scripts/mit/mit_mm.sh

source ./scripts/mit/mit_r.sh

source ./scripts/snips/snips.sh

Note: Each time re-run a setting you need to clear the corresponding pred path manaully.

• PromptSlotTagging:
  • original_data: original data to construct prompt data
  • scripts: running scripts.
    • mit: running scripts for mit (In-domain).
      • mit_m.sh: running script for MIT-movie
      • mit_mm.sh: running script for MIT-movie-hard
      • mit_r.sh: running script for MIT-restaurant
    • snips: running scripts for SNIPS (Meta-Source Transfer).
      • snips.sh: running script for SNIPS
  • utils: tools to construct prompt data
  • train.py: the entry file of the whole project.
  • opt.py: the definition and default settings of the arguments.
  • model.py: modified GPT2 modeling for our generation.
  • dataloader.py: the definition of dataloader, which transfrom raw prompted data into model inputs.
  • eval.py: the eval function based on the outputs of the model.
  • conlleval.pl: the conlleval scripts from https://www.clips.uantwerpen.be/conll2000/chunking/conlleval.txt.

Apache License 2.0