mlsanityData to 7 Oct 2026

Look before you Hop: Conversational Question Answering over Knowledge Graphs Using Judicious Context Expansion

arXiv 1910.03262 ↗First posted 8 Oct 2019cs.IR cs.CLcited by 42

Not on the map. Why?

Abstract (arXiv)

Fact-centric information needs are rarely one-shot; users typically ask follow-up questions to explore a topic. In such a conversational setting, the user's inputs are often incomplete, with entities or predicates left out, and ungrammatical phrases. This poses a huge challenge to question answering (QA) systems that typically rely on cues in full-fledged interrogative sentences. As a solution, we develop CONVEX: an unsupervised method that can answer incomplete questions over a knowledge graph (KG) by maintaining conversation context using entities and predicates seen so far and automatically inferring missing or ambiguous pieces for follow-up questions. The core of our method is a graph exploration algorithm that judiciously expands a frontier to find candidate answers for the current question. To evaluate CONVEX, we release ConvQuestions, a crowdsourced benchmark with 11,200 distinct conversations from five different domains. We show that CONVEX: (i) adds conversational support to any stand-alone QA system, and (ii) outperforms state-of-the-art baselines and question completion strategies.

Key facts. Cited by 42 papers in the map (data through 7 Oct 2026). First posted on arXiv 8 Oct 2019.

Builds on

No reference list yet.

Built on by

Cited by year (2026 to 7 Oct)

Citing papers per year: 2021: 14; 2022: 8; 2023: 10; 2024: 7; 2025: 1; 2026: 2.

42 papers.

Sort:

By area:

  1. 2021QA Dataset Explosion: A Taxonomy of NLP Resources for Question Answering and Reading Comprehensioncited by 91
  2. 2023Let the LLMs Talk: Simulating Human-to-Human Conversational QA via Zero-Shot LLM-to-LLM Interactionscited by 70
  3. 2021Complex Knowledge Base Question Answering: A Surveycited by 52
  4. 2021Conversational Question Answering: A Surveycited by 31
  5. 2022An Open Challenge for Inductive Link Prediction on Knowledge Graphscited by 26
  6. 2022Conversational Question Answering on Heterogeneous Sourcescited by 26
  7. 2021Conversational Question Answering over Knowledge Graphs with Transformer and Graph Attention Networkscited by 24
  8. 2023Personalized Large Language Model Assistant with Evolving Conditional Memorycited by 24
  9. 2021Reinforcement Learning from Reformulations in Conversational Question Answering over Knowledge Graphscited by 18
  10. 2021UNIQORN: Unified Question Answering over RDF Knowledge Graphs and Natural Language Textcited by 17
  11. 2021NOAHQA: Numerical Reasoning with Interpretable Graph Question Answering Datasetcited by 14
  12. 2021ParaQA: A Question Answering Dataset with Paraphrase Responses for Single-Turn Conversationcited by 12
30 more
  1. 2021Wizard of Search Engine: Access to Information Through Conversations with Search Enginescited by 11
  2. 2021Beyond NED: Fast and Effective Search Space Reduction for Complex Question Answering over Knowledge Basescited by 11
  3. 2021Context Transformer with Stacked Pointer Networks for Conversational Question Answering over Knowledge Graphscited by 10
  4. 2021Structured Context and High-Coverage Grammar for Conversational Question Answering over Knowledge Graphscited by 10
  5. 2023Semantic Parsing for Conversational Question Answering over Knowledge Graphscited by 10
  6. 2023Dialogizer: Context-aware Conversational-QA Dataset Generation from Textual Sourcescited by 9
  7. 2024Evidence Contextualization and Counterfactual Attribution for Conversational QA over Heterogeneous Data with RAG Systemscited by 8
  8. 2021A Graph-guided Multi-round Retrieval Method for Conversational Open-domain Question Answeringcited by 7
  9. 2022Interactive Question Answering Systems: Literature Reviewcited by 7
  10. 2025Dialogue Benchmark Generation from Knowledge Graphs with Cost-Effective Retrieval-Augmented LLMscited by 7
  11. 2023GETT-QA: Graph Embedding based T2T Transformer for Knowledge Graph Question Answeringcited by 6
  12. 2022From Rewriting to Remembering: Common Ground for Conversational QA Modelscited by 5
  13. 2023Knowledge Graphs Queryingcited by 5
  14. 2023Learning to Select the Relevant History Turns in Conversational Question Answeringcited by 4
  15. 2021High-Quality Diversification for Task-Oriented Dialogue Systemscited by 3
  16. 2024Engineering Conversational Search Systems: A Review of Applications, Architectures, and Functional Componentscited by 3
  17. 2022Contrastive Representation Learning for Conversational Question Answering over Knowledge Graphscited by 2
  18. 2024Benchmarking Large Language Models for Conversational Question Answering in Multi-instructional Documentscited by 2
  19. 2022An Answer Verbalization Dataset for Conversational Question Answerings over Knowledge Graphscited by 1
  20. 2022A Survey on Conversational Search and Applications in Biomedicinecited by 1
  21. 2023Orca: A Few-shot Benchmark for Chinese Conversational Machine Reading Comprehensioncited by 1
  22. 2023IslamicPCQA: A Dataset for Persian Multi-hop Complex Question Answering in Islamic Text Resourcescited by 1
  23. 2023KGConv, a Conversational Corpus grounded in Wikidatacited by 1
  24. 2024Reinforcement Learning for Conversational Question Answering over Knowledge Graphcited by 1
  25. 2024ConvKGYarn: Spinning Configurable and Scalable Conversational Knowledge Graph QA datasets with Large Language Modelscited by 1
  26. 2024RAGONITE: Iterative Retrieval on Induced Databases and Verbalized RDF for Conversational QA over KGs with RAGcited by 1
  27. 2022Active Learning and Multi-label Classification for Ellipsis and Coreference Detection in Conversational Question-Answeringcited by 0
  28. 2024Conversational Exploratory Search of Scholarly Publications Using Knowledge Graphscited by 0
  29. 2026LiCQA : A Lightweight Complex Question Answering Systemcited by 0
  30. 2026Companion-style QA Assistance in Ego-Visioncited by 0