Developing a Conversational Recommendation System for Navigating Limited Options

TL;DR

This paper presents a conversational recommendation system that uses multi-turn dialogue to help users choose from limited options, improving efficiency, confidence, and user preference over non-interactive systems.

Contribution

The paper introduces a novel multi-turn dialogue-based recommendation system tailored for limited choice scenarios, validated with real-world data and user studies.

Findings

Increased efficiency in decision-making.

Higher user confidence in recommendations.

Users preferred the system over baseline methods.

Abstract

We have developed a conversational recommendation system designed to help users navigate through a set of limited options to find the best choice. Unlike many internet scale systems that use a singular set of search terms and return a ranked list of options from amongst thousands, our system uses multi-turn user dialog to deeply understand the users preferences. The system responds in context to the users specific and immediate feedback to make sequential recommendations. We envision our system would be highly useful in situations with intrinsic constraints, such as finding the right restaurant within walking distance or the right retail item within a limited inventory. Our research prototype instantiates the former use case, leveraging real data from Google Places, Yelp, and Zomato. We evaluated our system against a similar system that did not incorporate user feedback in a 16 person remote study, generating 64 scenario-based search journeys. When our recommendation system was successfully triggered, we saw both an increase in efficiency and a higher confidence rating with respect to final user choice. We also found that users preferred our system (75%) compared with the baseline.