CoRE-CoG: Conversational Recommendation of Entities using Constrained
Generation
- URL: http://arxiv.org/abs/2311.08511v1
- Date: Tue, 14 Nov 2023 20:07:34 GMT
- Title: CoRE-CoG: Conversational Recommendation of Entities using Constrained
Generation
- Authors: Harshvardhan Srivastava and Kanav Pruthi and Soumen Chakrabarti and
Mausam
- Abstract summary: End-to-end conversational recommendation systems generate responses by leveraging both dialog history and a knowledge base (KB)
A CRS mainly faces three key challenges: (1) at each turn, it must decide if recommending a KB entity is appropriate; if so, it must identify the most relevant KB entity to recommend; and finally, it must recommend the entity in a fluent utterance that is consistent with the conversation history.
CoRE-CoG addresses the limitations in prior systems by implementing a recommendation trigger that decides if the system utterance should include an entity, a type pruning module that improves the relevance of recommended entities, and a novel constrained response
- Score: 46.05111252227757
- License: http://creativecommons.org/licenses/by-nc-sa/4.0/
- Abstract: End-to-end conversational recommendation systems (CRS) generate responses by
leveraging both dialog history and a knowledge base (KB). A CRS mainly faces
three key challenges: (1) at each turn, it must decide if recommending a KB
entity is appropriate; if so, it must identify the most relevant KB entity to
recommend; and finally, it must recommend the entity in a fluent utterance that
is consistent with the conversation history. Recent CRSs do not pay sufficient
attention to these desiderata, often generating unfluent responses or not
recommending (relevant) entities at the right turn. We introduce a new CRS we
call CoRE-CoG. CoRE-CoG addresses the limitations in prior systems by
implementing (1) a recommendation trigger that decides if the system utterance
should include an entity, (2) a type pruning module that improves the relevance
of recommended entities, and (3) a novel constrained response generator to make
recommendations while maintaining fluency. Together, these modules ensure
simultaneous accurate recommendation decisions and fluent system utterances.
Experiments with recent benchmarks show the superiority particularly on
conditional generation sub-tasks with close to 10 F1 and 4 Recall@1 percent
points gain over baselines.
Related papers
- Aligning Recommendation and Conversation via Dual Imitation [56.236932446280825]
We propose DICR (Dual Imitation for Conversational Recommendation), which designs a dual imitation to explicitly align the recommendation paths and user interest shift paths.
By exchanging alignment signals, DICR achieves bidirectional promotion between recommendation and conversation modules.
Experiments demonstrate that DICR outperforms the state-of-the-art models on recommendation and conversation performance with automatic, human, and novel explainability metrics.
arXiv Detail & Related papers (2022-11-05T08:13:46Z) - EGCR: Explanation Generation for Conversational Recommendation [7.496434082286226]
Explanation Generation for Conversational Recommendation (EGCR) based on generating explanations for conversational agents to explain why they make the action.
EGCR incorporates user reviews to enhance the item representation and increase the informativeness of the whole conversation.
We evaluate EGCR on one benchmark conversational recommendation datasets and achieve better performance on both recommendation accuracy and conversation quality than other state-of-the art models.
arXiv Detail & Related papers (2022-08-17T02:30:41Z) - KECRS: Towards Knowledge-Enriched Conversational Recommendation System [50.0292306485452]
chit-chat-based conversational recommendation systems (CRS) provide item recommendations to users through natural language interactions.
external knowledge graphs (KG) have been introduced into chit-chat-based CRS.
We propose the Knowledge-Enriched Conversational Recommendation System (KECRS)
Experimental results on a large-scale dataset demonstrate that KECRS outperforms state-of-the-art chit-chat-based CRS.
arXiv Detail & Related papers (2021-05-18T03:52:06Z) - Learning to Ask Appropriate Questions in Conversational Recommendation [49.31942688227828]
We propose the Knowledge-Based Question Generation System (KBQG), a novel framework for conversational recommendation.
KBQG models a user's preference in a finer granularity by identifying the most relevant relations from a structured knowledge graph.
Finially, accurate recommendations can be generated in fewer conversational turns.
arXiv Detail & Related papers (2021-05-11T03:58:10Z) - CR-Walker: Tree-Structured Graph Reasoning and Dialog Acts for
Conversational Recommendation [62.13413129518165]
CR-Walker is a model that performs tree-structured reasoning on a knowledge graph.
It generates informative dialog acts to guide language generation.
Automatic and human evaluations show that CR-Walker can arrive at more accurate recommendation.
arXiv Detail & Related papers (2020-10-20T14:53:22Z) - Improving Conversational Recommender Systems via Knowledge Graph based
Semantic Fusion [77.21442487537139]
Conversational recommender systems (CRS) aim to recommend high-quality items to users through interactive conversations.
First, the conversation data itself lacks of sufficient contextual information for accurately understanding users' preference.
Second, there is a semantic gap between natural language expression and item-level user preference.
arXiv Detail & Related papers (2020-07-08T11:14:23Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.