{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,27]],"date-time":"2026-05-27T17:09:05Z","timestamp":1779901745329,"version":"3.53.1"},"publisher-location":"New York, NY, USA","reference-count":23,"publisher":"ACM","content-domain":{"domain":["dl.acm.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2025,8,3]]},"DOI":"10.1145\/3711896.3737233","type":"proceedings-article","created":{"date-parts":[[2025,8,3]],"date-time":"2025-08-03T21:07:39Z","timestamp":1754255259000},"page":"4457-4466","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":1,"title":["Hierarchical Lexical Graph for Enhanced Multi-Hop Retrieval"],"prefix":"10.1145","author":[{"ORCID":"https:\/\/orcid.org\/0009-0007-3042-9747","authenticated-orcid":false,"given":"Abdellah","family":"Ghassel","sequence":"first","affiliation":[{"name":"Queen's University, Kingston, ON, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-4247-8588","authenticated-orcid":false,"given":"Ian","family":"Robinson","sequence":"additional","affiliation":[{"name":"Amazon, London, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0002-6906-6983","authenticated-orcid":false,"given":"Gabriel","family":"Tanase","sequence":"additional","affiliation":[{"name":"Amazon, Seattle, WA, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0007-3168-175X","authenticated-orcid":false,"given":"Hal","family":"Cooper","sequence":"additional","affiliation":[{"name":"Amazon, Seattle, WA, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0008-5782-236X","authenticated-orcid":false,"given":"Bryan","family":"Thompson","sequence":"additional","affiliation":[{"name":"Amazon, Seattle, WA, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-8845-0507","authenticated-orcid":false,"given":"Zhen","family":"Han","sequence":"additional","affiliation":[{"name":"Amazon, Santa Clara, CA, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8367-0733","authenticated-orcid":false,"given":"Vassilis","family":"Ioannidis","sequence":"additional","affiliation":[{"name":"Amazon, Santa Clara, CA, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3945-3640","authenticated-orcid":false,"given":"Soji","family":"Adeshina","sequence":"additional","affiliation":[{"name":"Amazon, Santa Clara, CA, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0435-0035","authenticated-orcid":false,"given":"Huzefa","family":"Rangwala","sequence":"additional","affiliation":[{"name":"Amazon, Santa Clara, CA, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"320","published-online":{"date-parts":[[2025,8,3]]},"reference":[{"key":"e_1_3_2_2_1_1","unstructured":"Anthropic. 2024a. Claude 3 Model Card. https:\/\/www.anthropic.com\/model_cards\/claude_3.pdf"},{"key":"e_1_3_2_2_2_1","unstructured":"Anthropic. 2024b. Model Card Addendum: Claude 3.5 Haiku and Upgraded Claude 3.5 Sonnet. https:\/\/assets.anthropic.com\/m\/1cd9d098ac3e6467\/original\/Claude-3-Model-Card-October-Addendum.pdf"},{"key":"e_1_3_2_2_3_1","doi-asserted-by":"publisher","DOI":"10.1162\/tacl_a_00580"},{"key":"e_1_3_2_2_4_1","unstructured":"Dzmitry Bahdanau Kyunghyun Cho and Yoshua Bengio. 2016. Neural Machine Translation by Jointly Learning to Align and Translate. arxiv:1409.0473 [cs.CL] https:\/\/arxiv.org\/abs\/1409.0473"},{"key":"e_1_3_2_2_5_1","unstructured":"Maciej Besta Ales Kubicek Roman Niggli Robert Gerstenberger Lucas Weitzendorf Mingyuan Chi Patrick Iff Joanna Gajda Piotr Nyczyk J\u00fcrgen M\u00fcller Hubert Niewiadomski Marcin Chrapek Michal Podstawski and Torsten Hoefler. 2024. Multi-Head RAG: Solving Multi-Aspect Problems with LLMs. arxiv:2406.05085 [cs.CL] https:\/\/arxiv.org\/abs\/2406.05085"},{"key":"e_1_3_2_2_6_1","doi-asserted-by":"publisher","DOI":"10.18653\/v1\/2023.acl-long.290"},{"key":"e_1_3_2_2_7_1","doi-asserted-by":"publisher","DOI":"10.18653\/v1\/2024.emnlp-main.845"},{"key":"e_1_3_2_2_8_1","unstructured":"Cohere. 2023. Introducing Embed v3. https:\/\/cohere.com\/blog\/introducing-embed-v3. Accessed: 2025-05-27."},{"key":"e_1_3_2_2_9_1","doi-asserted-by":"publisher","DOI":"10.1109\/TIT.1967.1053964"},{"key":"e_1_3_2_2_10_1","doi-asserted-by":"publisher","DOI":"10.18653\/v1\/N19-1240"},{"key":"e_1_3_2_2_11_1","unstructured":"Darren Edge Ha Trinh Newman Cheng Joshua Bradley Alex Chao Apurva Mody Steven Truitt and Jonathan Larson. 2024. From Local to Global: A Graph RAG Approach to Query-Focused Summarization. arxiv:2404.16130 [cs.CL] https:\/\/arxiv.org\/abs\/2404.16130"},{"key":"e_1_3_2_2_12_1","doi-asserted-by":"publisher","DOI":"10.18653\/v1\/2020.emnlp-main.710"},{"key":"e_1_3_2_2_13_1","doi-asserted-by":"publisher","DOI":"10.48550\/ARXIV.2312.10997"},{"key":"e_1_3_2_2_14_1","volume-title":"Ieva Staliunaite, and Pontus Stenetorp.","author":"He Yunjie","year":"2023","unstructured":"Yunjie He, Philip John Gorinski, Ieva Staliunaite, and Pontus Stenetorp. 2023. Graph Attention with Hierarchies for Multi-hop Question Answering. arxiv:2301.11792 [cs.CL] https:\/\/arxiv.org\/abs\/2301.11792"},{"key":"e_1_3_2_2_15_1","unstructured":"Taqi Jaffri. 2023. Announcing Docugami Knowledge Graph Retrieval Augmented Generation (KG-RAG) Datasets in the LlamaHub. https:\/\/www.docugami.com\/blog\/kg-rag-datasets-llama-index"},{"key":"e_1_3_2_2_16_1","doi-asserted-by":"publisher","DOI":"10.18653\/v1\/2024.emnlp-main.248"},{"key":"e_1_3_2_2_17_1","doi-asserted-by":"publisher","DOI":"10.5555\/3495724.3496517"},{"key":"e_1_3_2_2_18_1","doi-asserted-by":"publisher","DOI":"10.48550\/arXiv.2312.15503"},{"key":"e_1_3_2_2_19_1","volume-title":"Advances in Neural Information Processing Systems","author":"Ru Dongyu","year":"1999","unstructured":"Dongyu Ru, Lin Qiu, Xiangkun Hu, Tianhang Zhang, Peng Shi, Shuaichen Chang, Cheng Jiayang, Cunxiang Wang, Shichao Sun, Huanyu Li, Zizhao Zhang, Binjie Wang, Jiarong Jiang, Tong He, Zhiguo Wang, Pengfei Liu, Yue Zhang, and Zheng Zhang. 2024. RAGChecker: A Fine-grained Framework for Diagnosing Retrieval-Augmented Generation. In Advances in Neural Information Processing Systems, A. Globerson, L. Mackey, D. Belgrave, A. Fan, U. Paquet, J. Tomczak, and C. Zhang(Eds.), Vol. 37. Curran Associates, Inc., 21999-22027. https:\/\/proceedings.neurips.cc\/paper_files\/paper\/2024\/file\/27245589131d17368cccdfa990cbf16e-Paper-Datasets_and_Benchmarks_Track.pdf"},{"key":"e_1_3_2_2_20_1","doi-asserted-by":"publisher","DOI":"10.1108\/eb026526"},{"key":"e_1_3_2_2_21_1","doi-asserted-by":"publisher","DOI":"10.48550\/ARXIV.2401.15391"},{"key":"e_1_3_2_2_22_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41598-019-41695-z"},{"key":"e_1_3_2_2_23_1","volume-title":"Explainable Multi-hop Question Answering. In Conference on Empirical Methods in Natural Language Processing (EMNLP).","author":"Yang Zhilin","unstructured":"Zhilin Yang, Peng Qi, Saizheng Zhang, Yoshua Bengio, William W. Cohen, Ruslan Salakhutdinov, and Christopher D. Manning. 2018. HotpotQA: A Dataset for Diverse, Explainable Multi-hop Question Answering. In Conference on Empirical Methods in Natural Language Processing (EMNLP)."}],"event":{"name":"KDD '25: The 31st ACM SIGKDD Conference on Knowledge Discovery and Data Mining","location":"Toronto ON Canada","acronym":"KDD '25","sponsor":["SIGKDD ACM Special Interest Group on Knowledge Discovery in Data","SIGMOD ACM Special Interest Group on Management of Data"]},"container-title":["Proceedings of the 31st ACM SIGKDD Conference on Knowledge Discovery and Data Mining V.2"],"original-title":[],"link":[{"URL":"https:\/\/dl.acm.org\/doi\/pdf\/10.1145\/3711896.3737233","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T18:09:54Z","timestamp":1777572594000},"score":1,"resource":{"primary":{"URL":"https:\/\/dl.acm.org\/doi\/10.1145\/3711896.3737233"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,8,3]]},"references-count":23,"alternative-id":["10.1145\/3711896.3737233","10.1145\/3711896"],"URL":"https:\/\/doi.org\/10.1145\/3711896.3737233","relation":{},"subject":[],"published":{"date-parts":[[2025,8,3]]},"assertion":[{"value":"2025-08-03","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}