{"url":"/method/adafisher","slug":"adafisher","name":"AdaFisher","full_name":"Adaptive Second Order Optimization via Fisher Information","full_name_withheld":false,"description_markdown":"AdaFisher – an adaptive second-order optimizer that leverages a block-diagonal approximation to the Fisher information matrix for adaptive gradient preconditioning.","description_state":"present","introduced_year":null,"introduced_by":{"title":"AdaFisher: Adaptive Second Order Optimization via Fisher Information","paper":"/paper/adafisher-adaptive-second-order-optimization","first_author":"Damien Martins Gomes","n_authors":5,"url_abs":null,"archive_paper_url":"https://paperswithcode.com/paper/adafisher-adaptive-second-order-optimization"},"source":{"url":"https://arxiv.org/abs/2405.16397v3","title":"AdaFisher: Adaptive Second Order Optimization via Fisher Information","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":"Stochastic Optimization","url":"/methods/category/stochastic-optimization","pwc_aliases":[]}],"n_papers_tagged":2,"archive_num_papers":2,"papers_newest_first":[{"paper":"/paper/towards-practical-second-order-optimizers-in","title":"Towards Practical Second-Order Optimizers in Deep Learning: Insights from Fisher Information Analysis","date":"2025-04-26","arxiv_id":"2504.20096","n_code_links":1,"syntology":null},{"paper":"/paper/adafisher-adaptive-second-order-optimization","title":"AdaFisher: Adaptive Second Order Optimization via Fisher Information","date":"2024-05-26","arxiv_id":"2405.16397","n_code_links":1,"syntology":{"ran":7,"of":10,"unverified":3,"pointer_only":10}}],"papers_shown":2,"tasks":[{"task":"/task/computational-efficiency","name":"Computational Efficiency","papers":2},{"task":"/task/image-classification","name":"Image Classification","papers":2},{"task":"/task/language-modeling","name":"Language Modeling","papers":2},{"task":"/task/language-modelling","name":"Language Modelling","papers":2},{"task":"/task/image-classification","name":"image-classification","papers":2},{"task":"/task/second-order-methods","name":"Second-order methods","papers":1}],"tasks_shown":6,"n_tasks":6,"usage_by_year":[{"year":"2024","papers":1},{"year":"2025","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/adafisher"},"syntology_read_at":"2026-09-24T18:15:14+00:00"}