お知らせ

[2023/03/01]  入賞者レポート「入賞アルゴリズム概要（SIGNATEまとめ）」を公開いたしました。
[2022/11/15]  チュートリアルを公開しました

背景

コンペティションの主催元であるひろしまサンドボックス推進協議会事務局（運営広島県）では、「作ってはならし、みんなが集まって創作を繰り返す、「砂場」のように何度も試行錯誤できる場」という考えを元に、様々な産業・地域課題の解決をテーマとして共創で試行錯誤できるオープンな実証実験の場「ひろしまサンドボックス」を構築しています。

「ひろしまサンドボックス」では、AIやIoTを活用した実証プロジェクトを中心に、様々な取り組みをしています。過去実施したコンペでは、入賞した優秀な分析アイデアを教材化し、地域におけるAI人材の持続的な育成も行ってきました。

そこで、本コンペでは、新しい試行錯誤として「河川の水位予測するアルゴリズムの構築」を題材として設定いたしました。コンペを通じて様々な分析アイデアが生み出されることを期待しています。皆様からの多数のご応募をお待ちしております。

課題

広島県内の観測データ（河川の水位、雨量、潮位）から、翌日の各河川（各観測局）の水位を予測するアルゴリズムを作成していただきます。


データ概要

分析用データとして、以下が与えられます。
内容　　：観測日時、ダムや観測地点の緯度経度、水位、雨量、潮位
観測期間：6年間
観測頻度：1時間ごと

投稿方法

予測結果ファイルの代わりに、学習済みモデルと推論部分のソースコードを投稿します。投稿すると、自動で予測結果ファイルの作成、サイズと推論速度、認識精度の評価が行われます。投稿ファイルの作成方法については、配布データのreadme.mdを参照してください。
※ソースコードの実行を伴うため、評価結果がリーダーボードに反映されるまで時間がかかります。

サイズ・推論速度の評価

投稿ファイル(ソースコードと学習済みモデルをまとめたもの)のサイズと推論時間は、以下の流れで評価されます。
　1. 投稿ファイルのサイズの閾値512MBを超える場合は、評価の対象外。
　2. 投稿ファイルの解凍後、ソースコード(と学習済みモデル)が以下の環境で実行され、推論時間と精度を測定。
         - 実行環境のスペック:
             - vCPU: 4
             - メモリ: 16 GB
　3. 推論時間の閾値5[秒/レコード](1レコードは一日分に相当する)を超える場合は、評価はされるが順位は付かない（リーダーボードは順位"-"で表示）
        ※学習済みモデルの読み込みを含め全体で3時間以上かかる場合はエラーとなり、評価の対象外。
　4. 投稿ファイルのサイズと推論時間が閾値をクリアした場合のみ、予測結果の認識精度を元に順位が決定。（リーダーボードに表示される推論時間の単位は、[秒/レコード]）


精度の評価

  • 精度評価は、評価関数「RMSE（Root Mean Squared Error 平均二乗平方根誤差）」を使用します。
  • 真値が欠損値となっているサンプルは評価対象から除きます。
  • 評価値は0以上の値をとり、精度が高いほど小さな値となります。


処理フロー



入賞者決定の流れ

1. コンペ最終日までの評価（暫定評価）は評価用データセットの一部で評価し、コンペ終了後の評価（最終評価）は評価用データセットの残りの部分で評価します。リーダーボードはコンテスト終了時に自動的に最終評価に切り替わり、それを元に最終順位を決定します。このため、開催中と終了後では順位が大きく変動する場合もあります。
2. スコアが同値の場合は、早い日時でご応募いただいた参加者を上位とします。
3. 最終評価による順位が上位の方を入賞候補者とし、事務局から連絡いたします。
4. 検収のため、入賞候補者には、以下を提出していただきます。
　・学習や前処理など、応募時に投稿した推論部分を除いた部分のソースコード
　・ソースコードの説明書（前処理部分、学習部分などが分かるように明記。学習済モデルを利用した場合は、そのソース（データの所在、論文のリンク等）も明記）
　・実行環境（OSのバージョン、使用ソフトウェア及び解析手法）
　・データの解釈、工夫点、モデリングから得られる示唆等
5. 検収期間中、入賞候補者及び、その提出モデルが下記いずれかに該当する場合は失格となり、入賞の資格を失います。
　・事務局からの手続き上の連絡・要求に対して指定された期限内に対応しない
　・参加条件やルールを満たしていない
　・入賞時の提出物の権利譲渡に同意してない
　・プログラムが動作しない
　・その他、事務局が不当と判断した場合
6. 検収をクリアした方の中から、入賞者及び順位を確定します。

※失格となった場合や不正が発覚した場合は、SIGNATE独自の裁量により、メダル・ポイントが付与されない場合があります。

参加の前提
・チート行為やルールを無視した方法による参加は認められません。
・他者に対する誹謗中傷や公序良俗に反する行為を禁止します。事務局が悪質と判断したケースにおいては、入賞資格や会員資格の剥奪の可能性があることをを予めご了承のうえご参加ください。
・本コンペティションのデータはすべて公開されています。このため、探索行為などを含め、公開された情報を参照して正解を判定するような処理は禁止します。

システムの利用
・1人につき1アカウントのみ利用可能です。
・チーム人数は最大で5人、2022/12/31 まで作成可能です（チーム作成方法はこちら）

情報の取り扱い
コンペ開催期間中
・コード・学習済みモデル・データ分析結果のチーム外への共有を禁止します。ただし、全ての参加者が参照可能であるフォーラムでの開示は可能です。
コンペ終了後
・コード・学習済みモデル・データ分析結果の公開は可能です。詳細は「情報公開ポリシー」ページを参照ください。

モデルの構築
・コンペで提供されたフォーマットによる新規データを入力した場合、自動で予測結果が出力されるモデルのみが評価対象となります。
・追加費用を伴わない（有償の外部API等を使用しない）環境下で提案した手法が再現でき、かつ継続使用が可能な実装をお願いします。

データの利用
・配布するデータ以外のデータを利用（学習・予測）することは禁止します。ただし、オープンソースの学習済みモデルやライブラリは使用可能です。
・学習済みモデルを使用する場合、入賞時にソース（論文のリンク等）を明記してください。

ツールの利用
・ツールの利用は、商業利用が可能で、オープンかつ無料なもの（python, tensorflow 等）に限定します。

実装方法
・配布データの readme.md の指定に従って実装してください。

Disclosure policy

As a general rule, in accordance with Article 4, Paragraph 1 of the terms of participation, diclosing any contents such as insights and deliverables transmitted through the information or data provided by our company in relation to this competition is not permitted, however, only after the completion of this competition and for non-commercial purposes, it will be possible to disclose the contents within the score of the table below
Model *1
Public
Analysis results *2
Public
Public : Posting to social media sites, blogs and source repositories, and citing to papers
Restricted : Using in a limited range from research, education to seminars, where many unspecified people cannot access
*1 Execution unit source code and learned models
*2 The insights obtained using the information and data provided, or the solutions including scripts and processed data such as summary statistics

Q：投稿後システムエラーが出てエラーの内容が分からないのですが、どのように対処すればよいでしょうか？

A：原因は様々考えられますが、以下を確認してください。

  • 評価用データの水位などの値に対してstr型として渡す処理(それ以外の型を渡すとエラーを出すような処理)を実装していないか。本来はstr型にもかかわらずfloat型が混ざり、str型を渡す前提の処理を実装しているとエラーを出す場合があります。配布データのreadme.mdの"predictor.pyの実装方法"にあるようにpandasによる型変換をして対応するか、str型を渡す前提の実装をしている場合は例外処理を実装するなどして対応してください。
  • 観測局×1日分の時間(24)分の予測を過不足なく行っているか。観測局の数や時間が不足していたり、重複や評価対象ではない観測局や時間などが存在すると、評価が正しく行われずにエラーとなることがあります。指定の観測局(入力データの"stations")に対して24時間分の予測を過不足なく行うように実装をしてください。
  • 予測値に欠損値(nan, Inf)が含まれていないか。予測値に欠損値が含まれていると、精度評価時にエラーとなります。サーバーで実行時にのみ欠損値を返すような場合も見受けられるので、必ず何らかの値を返すように実装をしてください。
  • 一日分の予測に時間がかかりすぎていないか。今回は全体で実行に3時間以上かかるとタイムアウトとなり、投稿が無効となります。長い期間(365日以上)での予測をしてみて、使用メモリや実行時間を確認して、時間がかかりすぎるようであればより省メモリで高速に動くように実装を見直してみてください。
どうしても原因がわからない場合は事務局へ直接お問い合わせください。

Q：配布されている学習用データには明らかな異常値とみられる数値が存在するのですが、評価用データにもそのような数値が含まれますか？

A：異常値の定義は難しいですが、評価用データは全期間の変動の傾向を確認したうえで観測所を選定して作成しています。いわゆる極端な数値を含むサンプルは含まれないと理解してください。

Terms of Participation in SIGNATE Competition

In order to participate in the Competition, you are required to agree to these Terms, in addition to the Terms of Use of SIGNATE.JP Site (hereinafter referred to as the “Terms of Use”). You should participate in the Competition after reading carefully and agreeing to these Terms. These Terms, the matters that are displayed as “additional matters” that you have agreed to when participating in a Competition, the Terms of Use and other terms and conditions that you have agreed to (hereinafter collectively referred to as “these Terms, etc.”) shall all be binding on the Participant.


Article 1 Definitions

1. For the purpose of these Terms, the following terms shall be defined as follows:

(1) “Site” means the website “SIGNATE (https://signate.jp)” on which the Competitions are posted.
(2) “Competition” means any competition on AI development or data analysis on the Site as held by the Host.
(3) “Host” is the host(s) of the Competition. The Host may be SIGNATE, Inc. (hereinafter referred to as the “Company”) or the Company’s client companies, affiliated companies, schools or organizations, etc. (hereinafter referred to as the “Client(s)”).
(4) “Participant(s)” means the member(s) (which mean “member(s)” defined in the Terms of Use, and the same shall apply hereinafter) who participate in a Competition.
(5) “Submissions” means, collectively, the analysis and prediction results, prediction models and reports, etc. as submitted in the Competition.
(6) “Final Submissions” means the Submissions submitted by a Participant that the Participant has specified as a final submission on the prescribed page in the Site by the time of completion of a Competition.
(7) “Winner Candidate” means the Participant who has received a notice from the Company that he/she is nominated as a winner candidate.
(8) “Submissions for Final Judgment” means the Submissions and other items designated by the Company as submitted by a Winner Candidate pursuant to the instructions of the Company.
(9) “Final Judgment” means the acceptance inspection and judgment, including reproducibility verification, by the Company for the Final Submissions and Submissions for Final Judgment of a Winner Candidate.
(10) “Winner” means the Winner Candidate who is informed by the Company that he/she has won a prize.
(11) “OSS” means software licensed based on OSS License Terms.
(12) “OSS License Terms” means any of the following license terms
(1) Either the GNU General Public License or the GNU Lesser General Public License published by the Free Software Foundation, Inc.;
(2) License terms listed at www.opensource.org/licenses/ or derivatives thereof;
(3) License terms that regard the software as “free software” or “open source software”; and
(4) License terms or agreements similar to the license terms listed in each of the three preceding items which request the user to disclose, distribute or license to a third party, or not to exercise, etc., the licensed software, its derivatives and the intellectual property rights associated therewith in whole or in part.

Article 2 Competition

1. A member who desires to participate in a Competition shall be required to agree to these Terms, etc. and to satisfy the conditions for participation as specified in each such Competition. Any person who is not a member shall not participate in any Competition.
2. Participants shall participate in each Competition in the manner as advised by the Company and shall be obligated to comply with the rules as prescribed in each Competition.
3. Participants may submit the Submissions for the assignment of a Competition during the period of such Competition and submit as many proposals on the method of solving the problem as specified by the Company to the Host by the end of the period of the said Competition.
4. Participants may submit Submissions in the form specified in the Competition and specify those Submissions as a Final Submission on the prescribed page in the Site by the end time specified by the said Competition.
5. Participants’ Final Submissions shall be evaluated in accordance with the evaluation method specified in the Competition and the final ranking shall be determined based on such evaluation.
6. Participants may, as a general rule, check their own evaluation results and the evaluation results of each of the other Participants for Submissions that may be evaluated quantitatively on the Site.
7. Participants shall be solely liable for their own Submissions, including the legality and non-infringement of the Submission.
8. Participants shall not submit any Submissions that have no direct relationship to each Competition.
9. Unless otherwise provided for, Participants may not directly communicate to, consult with, make a request to, solicit or take any other actions with the Host in respect of the matters related to a Competition during the period of the said Competition.
10. Participants shall direct any questions or concerns regarding any Competition to the Company or the third party designated by the Company in accordance with the procedures prescribed by the Company as posted on the Site.
11. Participants shall produce Submissions in compliance with the OSS License Terms related to the OSS when using or incorporating OSS in a Submission. However, Participants shall not use or incorporate OSS for which commercial use is prohibited in a Submission.
12. The Host shall not be obligated to pay any remuneration or other consideration for any act of the Participants in a Competition under any pretext. And the Company shall not be obligated to pay any remuneration or other consideration other than those prescribed in the following Article for any act of the Participants in a Competition.

Article 3 Reward and Vesting of Rights

1. Unless otherwise provided for, any Participant shall satisfy the requirements set forth in the following items in order to be entitled to receive a reward in any Competition that offers a reward:

(1) To be a winner;
(2) To agree to transfer to the Host and the relevant transferee of rights in such Competition all transferable rights, such as copyrights (including the rights as prescribed in Article 27 and Article 28 of the Copyright Act, and the same shall apply hereinafter), rights to obtain patents and know-how, etc. in and to all analysis and prediction results, prediction models, reports, etc., written explanations on algorithms, source code and reproduction method, etc. (although not limited to these), and the Submissions contained in the Final Submissions and Submissions for Final Judgment (hereinafter referred to as the “Rights”) along with a guarantee that the Participant has the authority to transfer such Rights;
(3) To guarantee that any relevant transferee of rights may use the Rights contained in the Final Submissions and Submissions for Final Judgment for its own business and other purpose without any restriction and to agree to their exclusive use of such Rights;
(4) To agree not to exercise moral rights to the Rights against the relevant transferee of rights;
(5) To enter into an agreement for the transfer of the Rights with the relevant eligible transferee of rights, including the guarantee of and agreement to the matters in the preceding three (3) items and other reasonable provisions;
(6) To have the personal identity of such Participant verified by the Company; and
(7) Not to breach any provision of these Terms, etc.

2. Any Winner Candidate shall, after having received a notice from the Company that he/she is nominated as a winner candidate, submit the Submissions for Final Judgment on or before the designated date and communicate the matters requiring confirmation or response in relation to the Final Submissions and the Submissions for Final Judgment to the Company on or before the designated date, in accordance with the instructions of the Company. The Company shall carry out the final judgment based on such matters requiring confirmation or response. If the Company receives no confirmation or response satisfactory to the Company on or before the designated date, the Company may exclude such Winner Candidate from the subject of the final judgment and the Winner Candidate shall not raise any objection thereto.
3. If the Company considers that the Final Submissions or Submissions for Final Judgment need to be amended or modified, or there occur any additional matters requiring confirmation, in the course of the final judgment, any Winner Candidate shall take action or make response in relation to the matters that require amendment or modification, or the matters requiring confirmation, on or before the designated date in accordance with the instructions of the Company. If the Company receives no action or response satisfactory to the Company on or before the designated date, the Company may exclude such Winner Candidate from the final judgment and the Winner Candidate shall not raise any objection thereto.
4. The Company shall determine the Winner through the final judgment and inform the Winner to that effect.

Article 4 Confidentiality

1. Any Participant shall treat any information and data that they receive from the Company in relation to Competitions as well as knowledge and products, etc. obtained using such information and data (including Participant Submissions; hereinafter referred to as the “Company-Provided Information”) as confidential information and shall not disclose the same to any third party and use the same for any purpose other than for such Competition and purpose specified by the Company separately; provided, however, that the confidential information shall not include any information that falls under any of the following items:

(1) Information that is known to the public at the time it was received;
(2) Information that is already possessed by the Participant at the time it was received (only in the case where such Participant may demonstrate such fact by reasonable means);
(3) Information that becomes known to the public without the fault of the Participant after it was received;
(4) Information that is independently developed by the Participant without reference to any information received; or
(5) Information that is rightfully received from any third party having a right to disclose such information without the obligations of confidentiality (only in the case where such Participant may demonstrate such fact by reasonable means).

2. Any Winner shall handle his/her Final Submissions and Submissions for Final Judgment in the same manner as Company-Provided Information after receiving notification that they are a winner. And Participant Submissions other than the Winner’s Final Submissions and Submissions for Final Judgment shall not be included as Company-Provided Information after the Company has determined the Winner notwithstanding the provisions of the preceding paragraph.
3. Any Participant may publish any algorithms that they have developed as well as any other materials they have created in connection with their participation in a Competition (including Final Submissions and Submissions for Final Judgment) after that Competition in accordance with the Competition Information Disclosure Policy (hereinafter, "Information Disclosure Policy") posted on the Site. However, Participants shall observe the following matters when publishing information and may not publish any materials prohibited by the Information Disclosure Policy:

(1) Clarify that the materials were created in connection with participation in the Competition;
(2) Give credit in accordance with the notation method prescribed in the Information Disclosure Policy when the materials to be published contain part of a dataset; and
(3) Clarify the location accessible to all Participants (including but not limited to the Competition forum and other locations designated by the Company) where the materials are published (including links, etc.) if publishing materials outside the Competition forum.

4. Any Participant shall delete or return to the Company the Company-Provided Information (excluding the information prescribed in paragraph 3) immediately after the completion of a Competition.
5. If there is any separate arrangement in relation to the confidential information in a Competition, the provisions of such arrangement shall prevail over the provisions of these Terms.
6. If any dispute occurs between a third party and the Host or the Company due to the breach by any Participant of the provisions of this Article and such other party makes any claim against the Company or the Host, such Participant shall compensate for any damage, loss, expenses (including, but not limited to, attorneys’ fees), lost profits and lost revenues, etc. incurred by the Company and the Host.
7. The provisions of this Article shall survive the termination of the relevant Competition or the Participant’s completion of the procedures for withdrawal from all services provided by the Company, with respect to the Company-Provided Information and the Winner’s Final Submissions and Submissions for Final Judgment for a period of five (5) years thereafter.

Article 5 Prohibited Acts of Participants

1. The Company shall prohibit Participants from engaging in any of the following acts in any Competition:

(1) An act of cracking, cheating, spoofing and other misconduct;
(2) An act of redistributing data files included in the dataset;
(3) An act of directly communicating to, consulting with, making a request to, soliciting or responding to solicitation or other activities to other Participants or the Host (other than the Company) without the involvement of the Company for the purpose of furthering the Participant’s own interests;
(4) Any profitmaking activities using the Competition (including but not limited to solicitation or scouting activities, and use for a third party in educational business, etc.) without the prior approval of the Company in writing or any other manner specified by the Company;
(5) An Act of transferring, offering as collateral or otherwise disposing of the Participants’ standing, or the rights or obligations, as a Participant in any Competition (except with the prior written consent of the Company);
(6) Acts that infringe upon the intellectual property rights, trade secrets or any other rights of third parties; and
(7) Any other act in breach of these Terms, etc.

2. If the Company deems that a Participant has engaged in, or may engage in, any of the prohibited acts as prescribed in the preceding paragraph, the Company may, without prior notice to the Participant, disqualify the Participant from the Competition in which the Participant participates, temporarily suspend the Participant from using some or all of the services provided by the Company, withdraw the Participant’s membership, claim damages from the Participant or take any other measures deemed necessary by the Company.

Article 6 Modification of Terms

1. The Company may modify, add or delete any provisions of these Terms from time to time without the approval of Participants.

November 15, 2022