ICLR Submission Guidelines: The Supplementary Material Conundrum
A recent query on Reddit's r/MachineLearning community has brought a critical detail of the International Conference on Learning Representations (ICLR) submission process to the forefront: the proper handling of supplementary materials. The question, posted by user /u/Alternative_Art2984, centers on whether supplementary documents can be attached alongside the main paper as a single submission or if they must be uploaded separately. The implication of a misstep here is stark: a desk rejection, meaning the paper is immediately disqualified without undergoing peer review.
ICLR, like many top-tier academic conferences in machine learning and artificial intelligence, maintains stringent guidelines to ensure a fair and efficient review process. These guidelines are designed to assist reviewers by providing all necessary information in a structured and accessible format. When it comes to supplementary materials—which can include additional proofs, detailed experimental setups, large datasets, code, or visualizations that are too extensive for the main paper—the conference's policy is clear and aims to streamline the reviewer's workload.
Understanding the Submission Structure
The core issue raised by the user is the desire to submit the main paper and its supplementary materials as a single, unified document. This approach, while seemingly convenient for the author, runs counter to the established procedures of most academic venues, including ICLR. Conferences typically require authors to upload their main paper and any supplementary files through a designated submission portal. This separation is not arbitrary; it allows the conference management system to correctly route and process different types of content. The main paper is what undergoes initial checks for formatting and plagiarism, and it is the primary document assigned to reviewers. Supplementary materials, while important for verification and deeper understanding, are often handled as an addendum. They might be reviewed if deemed necessary by the assigned reviewers, but they do not form the primary basis of the initial submission evaluation.
Submitting supplementary material appended to the main paper can lead to several problems. Reviewers might miss crucial information if they only focus on the main body, assuming it is comprehensive. The page limits for main papers are strict, and appending extra content can violate these limits, leading to immediate rejection. Furthermore, the automated systems used by conference organizers are configured to expect specific file types and structures. A single, unusually large file containing both the main paper and extensive appendices could be flagged by these systems as improperly formatted or exceeding size constraints, triggering a desk rejection before a human even sees it.
The standard practice, and the one implicitly or explicitly required by ICLR, is to submit the main paper as one file and all supplementary materials (which might themselves be a single PDF or a collection of files like code archives, videos, or data files) as separate, clearly labeled uploads within the same submission record. This ensures that the main paper is evaluated first and that supplementary materials are accessible to reviewers who need them, without disrupting the primary review workflow.
The Reddit thread, while a single user's query, reflects a common point of confusion for many researchers, particularly those new to the conference submission circuit. The pressure to present a complete and polished work is immense, and authors often want to ensure that all supporting evidence is readily available. However, adherence to the specific procedural rules of a conference is paramount. The goal of these rules is to create a standardized process that is as fair and efficient as possible for authors, reviewers, and organizers alike.
Beyond ICLR: A Broader Trend in Academic Publishing
This specific query about ICLR's supplementary material policy is indicative of a broader trend in academic publishing and conference submissions across various fields, especially in computer science and machine learning. As research becomes more complex and data-intensive, the need for supplementary information grows. However, the mechanisms for handling this information are constantly being refined to balance comprehensiveness with practicality.
Many journals and conferences now have dedicated sections for supplementary materials, often with specific guidelines on file types, sizes, and organization. For instance, some venues might allow a single supplementary PDF, while others encourage the submission of code repositories via platforms like GitHub or Zenodo for long-term archiving and reproducibility. The key takeaway for researchers is to meticulously read and follow the author guidelines for each specific venue. Relying on assumptions or past experiences from different conferences can lead to critical errors.
The surprising detail here is not the existence of supplementary materials, which are standard, but the potential for a desk rejection based on a seemingly minor organizational issue. This highlights how procedural compliance is as crucial as the scientific merit of the research itself in the highly competitive landscape of top-tier academic conferences. For a paper to be considered, it must first navigate the submission gauntlet successfully.
If you are preparing a submission for ICLR or any similar conference, always consult the official author instructions and FAQ pages. These documents provide the definitive guidance on formatting, file uploads, and submission deadlines. When in doubt, reaching out to the conference organizers directly through their official contact channels is the safest course of action, rather than risking a desk rejection due to a misunderstanding of the rules.