{"id":20098708,"url":"https://github.com/pfnet/intern-coding-tasks","last_synced_at":"2026-02-06T15:34:29.348Z","repository":{"id":229905764,"uuid":"731542974","full_name":"pfnet/intern-coding-tasks","owner":"pfnet","description":null,"archived":false,"fork":false,"pushed_at":"2024-12-09T02:55:47.000Z","size":46713,"stargazers_count":40,"open_issues_count":0,"forks_count":3,"subscribers_count":62,"default_branch":"main","last_synced_at":"2025-03-02T16:48:08.773Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":null,"language":"HTML","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/pfnet.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,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2023-12-14T10:12:09.000Z","updated_at":"2025-02-17T23:31:19.000Z","dependencies_parsed_at":"2025-03-02T16:50:52.540Z","dependency_job_id":null,"html_url":"https://github.com/pfnet/intern-coding-tasks","commit_stats":null,"previous_names":["pfnet/intern-coding-tasks"],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/pfnet/intern-coding-tasks","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/pfnet%2Fintern-coding-tasks","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/pfnet%2Fintern-coding-tasks/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/pfnet%2Fintern-coding-tasks/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/pfnet%2Fintern-coding-tasks/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/pfnet","download_url":"https://codeload.github.com/pfnet/intern-coding-tasks/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/pfnet%2Fintern-coding-tasks/sbom","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":264394675,"owners_count":23601345,"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":"2024-11-13T17:06:20.820Z","updated_at":"2026-02-06T15:34:29.336Z","avatar_url":"https://github.com/pfnet.png","language":"HTML","funding_links":[],"categories":[],"sub_categories":[],"readme":"# PFN Internship Coding Tasks\n\n\u003cimg src=\"logo.png\" width=\"500\"\u003e\n\nThis repository contains coding problems used for the screening process in PFN (Preferred Networks) summer internship.\n\nEnglish and Japanese statements are available. The overview of the problems is as follows.\n\n## 2021-2025\nThe problems in 2021-2025 consist of \"coding task\" and \"thematic task\".\n\n## 2020\nThe problem in 2020 consists of \"coding task\" and \"survey task\".\n\n## 2019\nThe problem set in 2019 consists of six themes. Each applicant needed to choose one of them according to the theme they have chosen.\n\n- Machine Learning\n- Back-end\n- Front-end\n- Chip\n- Performance Optimization\n- Computer Vision (Chainer)\n\n\n## 2018\nThe problem set in 2018 consists of five themes.\n\n- **Machine Learning/Mathematics**: You are asked to implement an algorithm of adversarial examples for some neural network model. You need to write a simple report on the performance of the algorithm as well.\n- **Back-end**: You are asked to create a tool that analyzes log files.\n- **Front-end**: You are asked to develop a prototype of an annotation tool for speech videos.\n- **Processor/Compiler**: You are asked to optimize the code of matrix multiplication. Further, you need to design a hardware circuit of matrix multiplication.\n- **Chainer**: You are asked to implement a training code for some model, using Chainer.\n\n## 2017\nThe problem set in 2017 consists of four themes.\n\n- **Machine Learning/Mathematics**: Reinforcement learning, Cartpole, Cross Entropy Method.\n- **Back-end**: Implementation of 'ls' command.\n- **Front-end**: Creation of search UI.\n- **Chip**: Hardware circuit design.\n\n## Old Problems (2011-2016)\n`old` directory contains older problem sets, which were use also in the summer internship screening of PFI (Preferred Infrastructure, Inc.).\nOnly Japanese statements are available.\n\n* 2016(PFN, PFI): Unsupervised learning. Auto-encoder and its extension.\n* 2015(PFN, PFI): Supervised learning. Data preprocessing, perceptron, ZCA Whitening, and its extension.\n* 2014(PFI): Template matching.\n* 2013(PFI): Search algorithm on random graphs.\n* 2012(PFI): String processing. Generalized word chain game.\n* 2011(PFI): String processing. Palindrome.\n\n# We Are Hiring!\nIf you got interested in PFN, we are looking forward to receiving your applications in our internship programs.\n\nWe are also hiring full-time employees. Please refer to the job page below.\n\n* [English job page](https://www.preferred.jp/en/careers/)\n* [Japanese job page](https://www.preferred.jp/ja/careers/)\n\n### Reference for PFN internship\n\n- 2025 Summer Internship Program\n ([English](https://preferred.jp/en/news/internship2025) /\n [Japanese](https://preferred.jp/ja/news/internship2025))\n- 2024 Summer Internship Program\n ([English](https://preferred.jp/en/news/internship2024/) /\n [Japanese](https://preferred.jp/ja/news/internship2024/))\n- 2023 Summer Internship Program\n ([English](https://preferred.jp/en/news/internship2023/) /\n [Japanese](https://preferred.jp/ja/news/internship2023/))\n- 2022 Summer Internship Program\n ([English](https://preferred.jp/en/news/internship2022/) /\n [Japanese](https://preferred.jp/ja/news/internship2022/))\n- 2021 Summer Internship Program\n ([English](https://preferred.jp/en/news/internship2021/) /\n [Japanese](https://preferred.jp/ja/news/internship2021/))\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fpfnet%2Fintern-coding-tasks","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fpfnet%2Fintern-coding-tasks","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fpfnet%2Fintern-coding-tasks/lists"}