{"url":"/method/sparse-switchable-normalization","slug":"sparse-switchable-normalization","name":"Sparse Switchable Normalization","full_name":"Sparse Switchable Normalization","full_name_withheld":false,"description_markdown":"**Sparse Switchable Normalization (SSN)** is a variant on [Switchable Normalization](https://paperswithcode.com/method/switchable-normalization) where the importance ratios are constrained to be sparse. Unlike $\\ell_1$ and $\\ell_0$ constraints that impose difficulties in optimization, the constrained optimization problem is turned into feed-forward computation through [SparseMax](https://paperswithcode.com/method/sparsemax), which is a sparse version of [softmax](https://paperswithcode.com/method/softmax).","description_state":"present","introduced_year":null,"introduced_by":{"title":"SSN: Learning Sparse Switchable Normalization via SparsestMax","paper":"/paper/ssn-learning-sparse-switchable-normalization","first_author":"Wenqi Shao","n_authors":7,"url_abs":null,"archive_paper_url":"https://paperswithcode.com/paper/ssn-learning-sparse-switchable-normalization"},"source":{"url":"http://arxiv.org/abs/1903.03793v1","title":"SSN: Learning Sparse Switchable Normalization via SparsestMax","url_on_a_paper_host":true},"code_snippet_url":"https://github.com/switchablenorms/Sparse_SwitchNorm/blob/875db480b5ce755cd569c2ce54655b637891ce58/utils/sparse_switchable_norm.py#L6","code_snippet_url_on_a_code_host":true,"categories":[{"area":"General","area_id":"general","collection":"Normalization","url":"/methods/category/normalization","pwc_aliases":[]}],"n_papers_tagged":1,"archive_num_papers":1,"papers_newest_first":[{"paper":"/paper/ssn-learning-sparse-switchable-normalization","title":"SSN: Learning Sparse Switchable Normalization via SparsestMax","date":"2019-03-09","arxiv_id":"1903.03793","n_code_links":1,"syntology":null}],"papers_shown":1,"tasks":[],"tasks_shown":0,"n_tasks":0,"usage_by_year":[{"year":"2019","papers":1}],"row_source":"methods_table","archive":{"source":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28","archive_url":"https://paperswithcode.com/method/sparse-switchable-normalization"},"syntology_read_at":"2026-09-24T18:15:14+00:00"}