eprintid: 10074376 rev_number: 21 eprint_status: archive userid: 608 dir: disk0/10/07/43/76 datestamp: 2019-05-20 16:37:18 lastmod: 2021-10-11 22:45:43 status_changed: 2019-05-20 16:37:18 type: proceedings_section metadata_visibility: show creators_name: Petke, J creators_name: Langdon, W title: Genetic Improvement of Data gives Binary Logarithm from sqrt ispublished: pub divisions: UCL divisions: B04 divisions: C05 divisions: F48 keywords: genetic programming, GI, search based software engineering, SBSE, software maintenance of empirical constants, data transplantation note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. abstract: Automated search in the form of the Covariance Matrix Adaptation Evolution Strategy (CMA-ES), plus manual code changes, transforms 512 Newton-Raphson floating point start numbers from an open source GNU C library, glibc, table driven square root function to create a new bespoke custom mathematical implementation of double precision binary logarithm log2 for C in seconds. date: 2019-07 date_type: published publisher: Association for Computing Machinery (ACM) official_url: http://dx.doi.org/10.1145/3319619.3321954 oa_status: green full_text_type: other language: eng primo: open primo_central: open_green verified: verified_manual elements_id: 1658739 doi: 10.1145/3319619.3321954 lyricists_name: Langdon, William lyricists_name: Petke, Justyna lyricists_id: WBLAN93 lyricists_id: JPETK66 actors_name: Petke, Justyna actors_id: JPETK66 actors_role: owner full_text_status: public series: Genetic and Evolutionary Computation Conference (GECCO) publication: Genetic and Evolutionary Computation Conference volume: 2019 place_of_pub: New York, NY, USA pagerange: 413-414 event_title: 2019 Genetic and Evolutionary Computation Conference (GECCO) event_location: Prague, Czech Republic institution: Genetic and Evolutionary Computation Conference book_title: Proceedings of the 2019 Genetic and Evolutionary Computation Conference (GECCO) citation: Petke, J; Langdon, W; (2019) Genetic Improvement of Data gives Binary Logarithm from sqrt. In: Proceedings of the 2019 Genetic and Evolutionary Computation Conference (GECCO). (pp. pp. 413-414). Association for Computing Machinery (ACM): New York, NY, USA. Green open access document_url: https://discovery.ucl.ac.uk/id/eprint/10074376/1/pos179s1-file1.pdf