LAPS

LAPS (LLM-Augmented Personalized Self-Dialogue) is a method for constructing personalized multi-session conversational search dialogues. This repository contains the LAPS dataset and code for the method, as well as code for evaluating the dialogues. These are resources for the following research:

• Doing Personal LAPS: LLM-Augmented Dialogue Construction for Personalized Multi-Session Conversational Search, Hideaki Joko, Shubham Chatterjee, Andrew Ramsay, Arjen P. de Vries, Jeff Dalton, Faegheh Hasibi, SIGIR 2024.

This repository is structured in the following way:

• dataset/ : LAPS dataset, containing the recipe and movie domains with extracted actual user preferences.
• dialogue_evaluation/ : Instructions and code for evaluating the dialogues.
• method/ : Code for the LAPS method.
• downstream/ : Instructions, trained models, and prompts for the preference extraction and personalized recommendation tasks.

LAPS Dataset

Figure: An snippet from a multi-session dialogue in the recipe domain.

Dataset

Each topic has train, val, test, split, as well as a full dataset (recipe_dataset.json and movie_dataset.json).

Table: Statistics of the LAPS dataset.

Domain	Split	#Single-Session	#Two-Session	#Three-Session	#Pref	#Utt	#Dial
Recipe	Train	163	24	160	5,538	9,342	691
	Val	24	5	21	772	1,333	97
	Test	48	10	41	1,600	2,610	191
	Total	235	39	222	7,910	13,285	979
Movie	Train	46	14	72	2,225	3,974	290
	Val	5	1	13	351	642	46
	Test	11	4	24	729	1,220	91
	Total	62	19	109	3,305	5,836	427

The JSON structure of the dataset is as follows:

• worker_id: A unique worker ID who handles the dialogue sessions. This can be used as uniq ID of the set of dialogue sessions.
• topic: Topic of the dialogue sessions; either "recipe" or "movie."
• sessions: An array of dialogue sessions, each containing the following keys:
  • dialogue: An array of messages that represent the back-and-forth conversation between the User and the Assistant. Each message object contains:
    • role: Either User or Assistant.
    • turn_number: A sequential number indicating the order of the message within the dialogue. Starts at 0.
    • message: The actual text content of the message.
  • preferences: key is a category of preferences (e.g., "cuisine") and value is a list of preferences (e.g., ["Italian", "Mexican"]).
  • task_setting: Indicates the task setting for which the User is seeking. (e.g., 'dinner', 'breakfast', 'lunch' for recipe topic)

Evaluation Tool

The evaluation tool is provided in the dialogue_evaluation/ directory.

• ./diversity/ contains the code for calculating the diversity scores (distinct-n, entropy-n, and Self-BLEU). See diversity_results.ipynb for how to run the code.
• ./quality/ contains the code for calculating the quality scores (Naturalness, Understandability, and Coherence) from the UniEval results. See quality_results.ipynb for how to run the code.

Methods

LAPS Method

LAPS (LLM-Augmented Personalized Self-Dialogue) method constructs diverse and personalized multi-session conversational search and recommendation dialogues.

The method employs an LLM to dynamically generate personal guidance for crowd workers, playing both user and assistant roles.

• Guidance generation: The guidance is generated based on the previously elicited user preferences and the current state of the dialogue, determined by a dialogue act classifier.
• Utterance composition: A single human agent composes the assistant response based on the LLM-generated guidance and then switches to the role of a user, providing a response to the previous utterance.
• Preference extraction: After each dialogue session, LAPS extracts preferences from the dialogue and stores them in a preference memory. This memory is a key-value store about user preferences, analogous to the PKG and PTKB concepts.

method/ contains the code for the LAPS method. See README.md for the instructions.

Preference Extraction and Personalized Recommendation

downstream/ contains the instructions, trained models, and prompts for the preference extraction and personalized recommendation tasks.

Citation and Contact

You can cite us using

@inproceedings{Joko:2024:LAPS,
  author = {Joko, Hideaki and Chatterjee, Shubham and Ramsay, Andrew and de Vries, Arjen P. and Dalton, Jeff and Hasibi, Faegheh},
  title = {{Doing Personal LAPS: LLM-Augmented Dialogue Construction for Personalized Multi-Session Conversational Search}},
  booktitle = {Proc. of the 47th International ACM SIGIR Conference on Research and Development in Information Retrieval},
  series = {SIGIR '24},
  year = {2024}
}

If you have any questions, please contact Hideaki Joko at hideaki.joko@ru.nl