PPDP 2025

Welcome to the 27th International Symposium on Principles and Practice of Declarative Programming. PPDP will be co-located with ICLP 2025 and held on 10-11 September 2025 at the University of Calabria, Rende, Italy.

Scope

The PPDP 2025 symposium brings together researchers from the declarative programming communities, including those working in the functional, logic, answer-set, and constraint handling programming paradigms. The goal is to stimulate research in the use of logical formalisms and methods for analyzing, performing, specifying, and reasoning about computations, including mechanisms for concurrency, security, static analysis, and verification.

Submissions are invited on all topics related to declarative programming, from principles to practice, from foundations to applications. Topics of interest include, but are not limited to:

• Language Design: domain-specific languages; interoperability; concurrency, parallelism and distribution; modules; functional languages; reactive languages; languages with objects; languages for quantum computing; languages inspired by biological and chemical computation; metaprogramming.

• Declarative languages in artificial intelligence: logic programming; database languages; knowledge representation languages; probabilistic languages; differentiable languages.

• Implementations: abstract machines; interpreters; compilation; compile-time and run-time optimization; memory management.

• Foundations: types; logical frameworks; monads and effects; semantics.

• Analysis and Transformation: partial evaluation; abstract interpretation; control flow; data flow; information flow; termination analysis; resource analysis; type inference and type checking; verification; validation; debugging; testing.

• Tools and Applications: programming and proof environments; verification tools; case studies in proof assistants or interactive theorem provers; certification; novel applications of declarative programming inside and outside of CS; declarative programming pearls; practical experience reports and industrial application; education.

Call for Papers

Submissions can be made in three categories:

• Regular Research Papers,
• System Descriptions, and
• Experience Reports.

Submissions of Research Papers must present original research which is unpublished and not submitted elsewhere. They must not exceed 12 pages ACM style 2-column (including figures, but excluding bibliography). Work that already appeared in unpublished or informally published workshop proceedings may be submitted (please contact the PC chair in case of questions). Research papers will be judged on originality, significance, correctness, clarity, and readability.

Submission of System Descriptions must describe a working system whose description has not been published or submitted elsewhere. They must not exceed 10 pages and should contain a link to a working system. System Descriptions must be marked as such at the time of submission and will be judged on originality, significance, usefulness, clarity, and readability.

Submissions of Experience Reports are meant to help create a body of published, refereed, citable evidence where declarative programming such as functional, logic, answer-set, constraint programming, etc., is used in practice. They must not exceed 5 pages including references. Experience Reports must be marked as such at the time of submission and need not report original research results. They will be judged on significance, usefulness, clarity, and readability.

Possible topics for an Experience Report include, but are not limited to:

• insights gained from real-world projects using declarative programming

• comparison of declarative programming with conventional programming in the context of an industrial project or a university curriculum

• curricular issues encountered when using declarative programming in education

• real-world constraints that created special challenges for an implementation of a declarative language or for declarative programming in general

• novel use of declarative programming in the classroom

• programming pearl that illustrates a nifty new data structure or programming technique.

Supplementary material may be provided via a link to an extended version of the submission (recommended), or in a clearly marked appendix beyond the above-mentioned page limits. Reviewers are not required to study extended versions or any material beyond the respective page limit. Material beyond the page limit will not be included in the final published version.

Format of a submission

For each paper category, you must use the most recent version of the Current ACM Master Template, at the time of writing being 2.12. You must use the LaTeX sigconf proceedings template, as the conference organizers are unable to process final submissions in other formats. In case of problems with the templates, contact ACM’s TeX support team at Aptara.

Authors should note ACM’s statement on author’s rights which apply to final papers. Submitted papers should meet the requirements of ACM’s plagiarism policy.

Requirements for publication

At least one author of each accepted submission will be expected to attend and present the work at the conference. The PC chair may retract a paper that is not presented. The PC chair may also retract a paper if complaints about the paper’s correctness are raised which cannot be resolved by the final paper deadline.

Review process

The reviewing is single-blind, with a two-days rebuttal phase.

Important dates

Title and abstract registration: TBA

Paper submission: TBA

Rebuttal period (48 hours): TBA

Author notification: TBA

Final paper version: TBA

Conference: 10-11 Sept 2025

Organization

Program committee chairs: Małgorzata Biernacka (Institute of Computer Science, University of Wroclaw) and Carlos Olarte (University Sorbonne Paris Nord and Laboratoire d’Informatique de Paris Nord).

General chairs:

Steering committee chair: James Cheney (Edinburgh University)

Program committee

TBA