Deep Dyna-Q: Integrating Planning for Task-Completion Dialogue Policy Learning

An implementation of the
Deep Dyna-Q: Integrating Planning for Task-Completion Dialogue Policy Learning

This document describes how to run the simulation of DDQ Agent.

Content

Data
Parameter
Running Dialogue Agents
Evaluation
Reference

Data

all the data is under this folder: ./src/deep_dialog/data

Movie Knowledge Bases
movie_kb.1k.p --- 94% success rate (for user_goals_first_turn_template_subsets.v1.p)
movie_kb.v2.p --- 36% success rate (for user_goals_first_turn_template_subsets.v1.p)
User Goals
user_goals_first_turn_template.v2.p --- user goals extracted from the first user turn
user_goals_first_turn_template.part.movie.v1.p --- a subset of user goals [Please use this one, the upper bound success rate on movie_kb.1k.json is 0.9765.]
NLG Rule Template
dia_act_nl_pairs.v6.json --- some predefined NLG rule templates for both User simulator and Agent.
Dialog Act Intent
dia_acts.txt
Dialog Act Slot
slot_set.txt

Parameter

Basic setting

--agt: the agent id
--usr: the user (simulator) id
--max_turn: maximum turns
--episodes: how many dialogues to run
--slot_err_prob: slot level err probability
--slot_err_mode: which kind of slot err mode
--intent_err_prob: intent level err probability

DDQ Agent setting

--grounded: planning k steps with environment rather than world model, serving as a upper bound.
--boosted: boost the world model with examles generated by rule agent
--train_world_model: train world model on the fly

Data setting

--movie_kb_path: the movie kb path for agent side
--goal_file_path: the user goal file path for user simulator side

Model setting

--dqn_hidden_size: hidden size for RL agent
--batch_size: batch size for DDQ training
--simulation_epoch_size: how many dialogue to be simulated in one epoch
--warm_start: use rule policy to fill the experience replay buffer at the beginning
--warm_start_epochs: how many dialogues to run in the warm start

Display setting

--run_mode: 0 for display mode (NL); 1 for debug mode (Dia_Act); 2 for debug mode (Dia_Act and NL); >3 for no display (i.e. training)
--act_level: 0 for user simulator is Dia_Act level; 1 for user simulator is NL level
--auto_suggest: 0 for no auto_suggest; 1 for auto_suggest
--cmd_input_mode: 0 for NL input; 1 for Dia_Act input. (this parameter is for AgentCmd only)

Others

--write_model_dir: the directory to write the models
--trained_model_path: the path of the trained RL agent model; load the trained model for prediction purpose.

--learning_phase: train/test/all, default is all. You can split the user goal set into train and test set, or do not split (all); We introduce some randomness at the first sampled user action, even for the same user goal, the generated dialogue might be different.

Running Dialogue Agents

Train DDQ Agent with K planning steps:

python run.py --agt 9 --usr 1 --max_turn 40 
          --movie_kb_path ./deep_dialog/data/movie_kb.1k.p 
          --dqn_hidden_size 80 --experience_replay_pool_size 5000 
          --episodes 500 
          --simulation_epoch_size 100 
          --run_mode 3 
          --act_level 0 
          --slot_err_prob 0.0 
          --intent_err_prob 0.00 
          --batch_size 16 
          --goal_file_path ./deep_dialog/data/user_goals_first_turn_template.part.movie.v1.p 
          --warm_start 1 --warm_start_epochs 100 
          --planning_steps K-1 
          --write_model_dir ./deep_dialog/checkpoints/DDQAgent
          --torch_seed 100
          --grounded 0
          --boosted 1
          --train_world_model 1

Test RL Agent with N dialogues:

python run.py --agt 9 --usr 1 --max_turn 40
          --movie_kb_path ./deep_dialog/data/movie_kb.1k.p
          --dqn_hidden_size 80
          --experience_replay_pool_size 1000
          --episodes 300 
          --simulation_epoch_size 100
          --write_model_dir ./deep_dialog/checkpoints/DDQAgent/
          --slot_err_prob 0.00
          --intent_err_prob 0.00
          --batch_size 16
          --goal_file_path ./deep_dialog/data/user_goals_first_turn_template.part.movie.v1.p
          --trained_model_path ./deep_dialog/checkpoints/DDQAgent/TRAINED_MODEL
          --run_mode 3

Experiments

To run the scripts, move the two bash files under src folder.

Bash_figure_4.sh is the script for figure 4.
Bash_figure_5.sh is the script for figure 5.

Evaluation

To evaluate the performance of agents, three metrics are available: success rate, average reward, average turns. Here we show the learning curve with success rate.

Plotting Learning Curve python draw_learning_curve.py --result_file ./deep_dialog/checkpoints/DDQAgent/noe2e/TRAINED_MODEL.json
Pull out the numbers and draw the curves in Excel

Reference

Main papers to be cited


@inproceedings{Peng2018DeepDynaQ,
  title={Deep Dyna-Q: Integrating Planning for Task-Completion Dialogue Policy Learning},
  author={Peng, Baolin and Li, Xiujun and Gao, Jianfeng and Liu, Jingjing and Wong, Kam-Fai and Su, Shang-Yu},
  booktitle={ACL},
  year={2018}
}

@article{li2016user,
  title={A User Simulator for Task-Completion Dialogues},
  author={Li, Xiujun and Lipton, Zachary C and Dhingra, Bhuwan and Li, Lihong and Gao, Jianfeng and Chen, Yun-Nung},
  journal={arXiv preprint arXiv:1612.05688},
  year={2016}
}

MiuLab / DDQ

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