Jurnal Ilmu Komputer dan Informatika (JIKI) is committed to maintaining the integrity, accuracy, and reliability of the scholarly record. Errors may be discovered after an article is published, and in some cases the integrity or reliability of an article may be called into question. JIKI therefore applies its correction and retraction policy objectively, transparently, and responsibly, in line with the guidelines of the Committee on Publication Ethics (COPE).

This policy applies to all articles published by JIKI, including Research Articles and Review Articles. Once an article is published in its final form with a DOI, it is part of the permanent scholarly record and cannot be changed silently. Any change after publication is made through a formal, linked notice as described below.

1. Types of Post-Publication Notices

2. Corrections (Erratum and Corrigendum)

A correction is issued when an error is found in a published article and it can be fixed without retracting the article as a whole. Corrections may address:

• Errors in author names, affiliations, ORCID iDs, or correspondence details.
• Errors in figures, tables, equations, pseudocode, or algorithm descriptions.
• Minor errors in data, source code, or calculations, provided the main findings and conclusions still hold. Examples include a bug in a preprocessing script or an error in calculating an evaluation metric that changes some reported values but not the overall conclusions.
• Incorrect or missing references, acknowledgements, funding information, or conflict of interest statements.
• Broken or incorrect links to datasets, source code repositories, or supplementary materials.

Correction requests may come from the authors, editors, readers, or anyone else with relevant information. The editor examines each request to determine the nature of the error, its effect on the article, and the appropriate action. If the corrected results are needed to support the main conclusions, the authors must provide evidence such as rerun experiments, updated tables, or corrected code.

When a correction is approved, JIKI publishes a correction notice that:

1. Identifies the original article by title, authors, and DOI.
2. Explains what was corrected and why.
3. Is linked to and from the original article.

Where appropriate, the article file may also be updated, with a clear note stating the date and nature of the change.

Minor errors that do not affect the meaning, scientific content, or metadata of an article, such as small typographical or formatting mistakes, generally do not justify a formal correction.

Corrections must never be used to hide ethical violations, manipulate the scholarly record, or change the conclusions of a study without transparency.

3. Retraction

A retraction is an editorial action indicating that a published article is no longer reliable as a whole, or that its publication involved a serious breach of research or publication ethics. Its purpose is to correct the scholarly record, not to punish the authors.

A retraction may be considered when there is:

• Clear evidence that the findings are unreliable because of misconduct, such as data fabrication, falsification, or manipulation of figures or results.
• Clear evidence that the findings are unreliable because of honest but serious error. Examples include a major code bug, data leakage between training and test sets, an incorrect experimental protocol, or invalid evaluation, any of which invalidate the main results or conclusions.
• Serious plagiarism of text, data, source code, algorithms, or figures.
• Duplicate or redundant publication without proper disclosure and justification.
• Use of data, software, or other materials without authorisation, or in breach of their licences, in a way that materially affects the work.
• Serious breaches of research ethics, including lack of required ethical approval or informed consent, or unlawful processing of personal data.
• Compromised peer review, including fake reviewers or manipulated review processes.
• Evidence that the article was produced by a paper mill, or contains substantial fabricated content or references.
• Authorship problems so serious that they undermine the integrity of the article.
• Undisclosed conflicts of interest that, in the editor’s judgement, would have unduly affected the interpretation of the work or the editorial decision.

Retraction is not used merely because of differences of scientific opinion, criticism of the results, or minor errors that can be fixed with a correction.

Authors who discover a serious honest error in their own work are encouraged to request a retraction. JIKI recognises such self-retractions as a responsible act of scientific integrity and will state clearly in the notice that the retraction was initiated by the authors.

4. Procedure for Corrections and Retractions

JIKI handles correction requests and concerns that may lead to retraction through the following steps:

1. Receipt of report. The editor receives information or evidence about an error, inaccuracy, or possible misconduct in a published article.
2. Initial assessment. The editor assesses the relevance of the report, the sufficiency of the evidence, and the possible effect on the integrity of the article.
3. Clarification and verification. The editor asks the authors to explain and, where relevant, to provide raw data, source code, or experimental records. The editor may also consult independent reviewers, experts, or the authors’ institution(s).
4. Decision. Based on the evidence, the editor decides on the appropriate action: no change, a correction, an Expression of Concern, or a retraction.
5. Notification and documentation. The decision is documented and communicated to the authors and other relevant parties.
6. Update of the scholarly record. The notice is published, linked to the original article, and its metadata is updated with Crossref and relevant indexing services.

All parties are given a reasonable opportunity to provide clarification. Editorial decisions are based on evidence and the integrity of the scientific record, not on whether the authors agree with the proposed action.

5. Expression of Concern

JIKI may publish an Expression of Concern when there are serious concerns about the reliability or integrity of an article but the evidence is not yet sufficient for a final decision. Examples include an ongoing institutional investigation, authors who have not responded, or concerns that the available evidence cannot resolve.

When further evidence becomes available, JIKI will re-evaluate the article. The Expression of Concern may then be followed by a correction or retraction, or it may be withdrawn if the concerns are resolved.

6. Transparency and Access to Articles

JIKI maintains the traceability of the scholarly record for all post-publication notices. Each correction, Expression of Concern, or retraction notice is published as a separate item with its own DOI and is linked to the original article.

Retraction notices will:

• Be titled “Retraction: [Article Title]” and include the full citation of the retracted article.
• State clearly who initiated the retraction (the authors, the editor, or both) and give the reasons.
• Be written objectively and factually, without defamatory statements.
• Be freely available to all readers.

Retracted articles will not be deleted. They remain available online, but the article page and every page of the PDF are clearly marked “RETRACTED”. This ensures readers do not mistake the article for a reliable source.

Removal. In exceptional cases only, an article may be removed from the website, with its bibliographic metadata and a notice explaining the reason kept. These cases include content that is clearly defamatory or infringes legal rights, content subject to a court order, or content that could pose a serious risk to individuals if acted upon, such as exposed personal data.

Changes before publication. Manuscripts that have been accepted but not yet published may be corrected or withdrawn by agreement between the authors and the editor, without a formal post-publication notice.

There is no time limit on corrections or retractions. JIKI will act whenever credible evidence comes to light.

7. Responsibilities of Authors

Authors must promptly inform the editor if they find a significant error in their published article. They are expected to:

• Cooperate in the verification process.
• Provide relevant information, raw data, source code, or experimental records.
• Help determine the appropriate corrective action.

If authors do not agree with a correction or retraction, the editor will consider the available evidence and decide in accordance with the journal’s policies and publication ethics. Authors’ disagreement will be noted in the published notice where relevant.

8. Commitment to Publication Integrity

JIKI is committed to handling corrections and retractions fairly, proportionately, transparently, and consistently. The aim of this policy is to maintain readers’ trust, protect the integrity of the scholarly literature, and ensure that the published record is accurate and reliable.

All decisions on corrections and retractions take into account the evidence, the effect on the reliability of the article, and the relevant principles of publication ethics.