{"id":16572762,"url":"https://github.com/lemire/rowreorderingcpplibrary","last_synced_at":"2025-10-29T02:30:17.604Z","repository":{"id":28589973,"uuid":"32108141","full_name":"lemire/rowreorderingcpplibrary","owner":"lemire","description":"This is a set of row-reordering algorithms and data compression compression schemes implemented in C++. ","archived":false,"fork":false,"pushed_at":"2020-08-10T14:16:45.000Z","size":78,"stargazers_count":7,"open_issues_count":0,"forks_count":3,"subscribers_count":5,"default_branch":"master","last_synced_at":"2025-02-01T21:11:08.704Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":"","language":"C++","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/lemire.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null}},"created_at":"2015-03-12T23:09:20.000Z","updated_at":"2024-10-14T16:14:28.000Z","dependencies_parsed_at":"2022-09-11T22:12:45.293Z","dependency_job_id":null,"html_url":"https://github.com/lemire/rowreorderingcpplibrary","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/lemire%2Frowreorderingcpplibrary","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/lemire%2Frowreorderingcpplibrary/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/lemire%2Frowreorderingcpplibrary/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/lemire%2Frowreorderingcpplibrary/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/lemire","download_url":"https://codeload.github.com/lemire/rowreorderingcpplibrary/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":238758238,"owners_count":19525732,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":[],"created_at":"2024-10-11T21:28:31.660Z","updated_at":"2025-10-29T02:30:17.051Z","avatar_url":"https://github.com/lemire.png","language":"C++","funding_links":[],"categories":[],"sub_categories":[],"readme":"# The Row reordering C++ library -- External memory version \n![Ubuntu 20.04 CI (GCC 9)](https://github.com/lemire/rowreorderingcpplibrary/workflows/Ubuntu%2020.04%20CI%20(GCC%209)/badge.svg)\n\nThis is a set of row-reordering algorithms and data compression compression schemes implemented in C++. The goal of these algorithms is to maximize the compression ratio of database tables through row reordering. \n\nThis library is strictly for researchers with a working knowledge of C++ that are interested in studying our implementation. This code is meant to help you implementing the algorithms from our papers (see references below).\n\n\nYou must read the papers: this is not standalone code. It is meant to complement the papers!\n\nFor a simple demo (in Java) of the Vortex order described in the paper, please see https://github.com/lemire/SimpleVortex\n\n# Requirements \n\nA POSIX C/C++ toolchain (linux, macOS)\n\n# Warning\n\nThis is \"proof of principle\" code. If you ever use this code in production... well, don't. It is not good C++ code: it is only prototypical.\n\n# References\n\nDaniel Lemire and Owen Kaser, Reordering Columns for Smaller Indexes, Information Sciences 181 (12), 2011.\nhttp://arxiv.org/abs/0909.1346\n\nDaniel Lemire, Owen Kaser, Eduardo Gutarra, Reordering Rows for Better Compression: Beyond the Lexicographic Order, ACM Transactions on Database Systems 37 (3), 2012.\nhttp://arxiv.org/abs/1207.2189\n\n\n# Usage \n\n    make tods2011\n    ./tods2011 myfile.csv\n\n\n\n\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Flemire%2Frowreorderingcpplibrary","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Flemire%2Frowreorderingcpplibrary","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Flemire%2Frowreorderingcpplibrary/lists"}