{"url":"/method/fast-voxel-query","slug":"fast-voxel-query","name":"Fast Voxel Query","full_name":"Fast Voxel Query","full_name_withheld":false,"description_markdown":"**Fast Voxel Query** is a module used in the [Voxel Transformer](https://paperswithcode.com/method/votr) 3D object detection model implementation of self-attention, specifically Local and Dilated Attention. For each querying index $v\\_{i}$, an attending voxel index $v\\_{j}$ is determined by Local and Dilated Attention. Then we can lookup the non-empty index $j$ in the hash table with hashed $v\\_{j}$ as the key. Finally, the non-empty index $j$ is used to gather the attending feature $f\\_{j}$ from $\\mathcal{F}$ for [multi-head attention](https://paperswithcode.com/method/multi-head-attention).","description_state":"present","introduced_year":null,"introduced_by":{"title":null,"paper":null,"first_author":null,"n_authors":0,"url_abs":null,"archive_paper_url":null},"source":{"url":"https://arxiv.org/abs/2109.02497v2","title":"Voxel Transformer for 3D Object Detection","url_on_a_paper_host":true},"code_snippet_url":null,"code_snippet_url_on_a_code_host":false,"categories":[{"area":"General","area_id":"general","collection":"Attention Mechanisms","url":"/methods/category/attention-mechanisms","pwc_aliases":["attention-mechanisms-1"]}],"n_papers_tagged":1,"archive_num_papers":null,"papers_newest_first":[{"paper":"/paper/voxel-transformer-for-3d-object-detection","title":"Voxel Transformer for 3D Object Detection","date":"2021-09-06","arxiv_id":"2109.02497","n_code_links":1,"syntology":{"ran":0,"of":7,"unverified":7,"pointer_only":7}}],"papers_shown":1,"tasks":[{"task":"/task/3d-object-detection","name":"3D Object Detection","papers":1},{"task":"/task/computational-efficiency","name":"Computational Efficiency","papers":1},{"task":"/task/object","name":"Object","papers":1},{"task":"/task/object-detection","name":"Object Detection","papers":1},{"task":"/task/object-recognition","name":"Object Recognition","papers":1},{"task":"/task/object-detection-1","name":"object-detection","papers":1}],"tasks_shown":6,"n_tasks":6,"usage_by_year":[{"year":"2021","papers":1}],"row_source":"embedded","archive":{"source":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28","archive_url":"https://paperswithcode.com/method/fast-voxel-query"},"syntology_read_at":"2026-09-24T18:15:14+00:00"}