EWEK-QA: Enhanced Web and Efficient Knowledge Graph Retrieval for Citation-based Question Answering Systems
Mohammad Dehghan, Mohammad Ali Alomrani, Sunyam Bagga, David, Alfonso-Hermelo, Khalil Bibi, Abbas Ghaddar, Yingxue Zhang, Xiaoguang Li,, Jianye Hao, Qun Liu, Jimmy Lin, Boxing Chen, Prasanna Parthasarathi, Mahdi, Biparva, Mehdi Rezagholizadeh

TL;DR
EWEK-QA enhances citation-based question answering by integrating an adaptive web retriever and knowledge graph triples, improving relevance, coverage, and efficiency over existing models in multiple evaluation metrics.
Contribution
The paper introduces EWEK-QA, a novel system combining adaptive web retrieval and efficient KG integration to improve citation-based QA performance.
Findings
Increased relevant passage extraction by over 20%
Improved answer span coverage by more than 25%
Outperformed state-of-the-art models in 7 QA tasks
Abstract
The emerging citation-based QA systems are gaining more attention especially in generative AI search applications. The importance of extracted knowledge provided to these systems is vital from both accuracy (completeness of information) and efficiency (extracting the information in a timely manner). In this regard, citation-based QA systems are suffering from two shortcomings. First, they usually rely only on web as a source of extracted knowledge and adding other external knowledge sources can hamper the efficiency of the system. Second, web-retrieved contents are usually obtained by some simple heuristics such as fixed length or breakpoints which might lead to splitting information into pieces. To mitigate these issues, we propose our enhanced web and efficient knowledge graph (KG) retrieval solution (EWEK-QA) to enrich the content of the extracted knowledge fed to the system. This…
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Taxonomy
TopicsTopic Modeling · Semantic Web and Ontologies · Advanced Text Analysis Techniques
MethodsSparse Evolutionary Training
