PLP Logo PLP 2021:
The 8th Workshop on Probabilistic Logic Programming

Collocated with ICLP 2021

September 20th, 2021, Porto

Important Dates  |    Submission  |    Accepted Papers  |    Invited Speakers  |    Programme Committee

Due to the ongoing pandemic, the workshop will be held online.

The workshop will take place on September 20th


20th September
Time (CEST)Event
14:00 - 14:10Opening
14:10 - 14:55Invited Talk. Nico Potyka: From Probabilistic Programming to Probabilistic Argumentation
14:55 - 15:20Thomas Eiter, Markus Hecher and Rafael Kiesel: aspmc: An Algebraic Answer Set Counter
15:20 - 15:35Break
15:35 - 16:20Invited Talk. Alessandro Antonucci: Machine Learning over Knowledge Bases by Probabilistic Circuits
16:20 - 16:45Felix Weitkämper, Beatrice Sarbu and Kailin Sun: Modelling infectious disease dynamics with probabilistic logic programming
16:45 - 17:10Kilian Rueckschloss and Felix Weitkaemper: Reasoning about Independence in Open Universe Probabilistic Logic Programs
17:10 - 17:25Break
17:25 - 18:10Invited Talk. Manfred Jaeger: Probabilistic relational learning and reasoning: relational Bayesian vs. graph neural networks
18:10 - 18:35Robert Zinkov and Willliam Byrd: probKanren: A Simple Probabilistic extension for microKanren
18:35 - 18:45Closing


Probabilistic logic programming (PLP) approaches have received much attention in this century. They address the need to reason about relational domains under uncertainty arising in a variety of application domains, such as bioinformatics, the semantic web, robotics, and many more. Developments in PLP include new languages that combine logic programming with probability theory as well as algorithms that operate over programs in these formalisms.

The workshop encompasses all aspects of combining logic, algorithms, programming and probability.

PLP is part of a wider current interest in probabilistic programming. By promoting probabilities as explicit programming constructs, inference, parameter estimation and learning algorithms can be run over programs which represent highly structured probability spaces. Due to logic programming's strong theoretical underpinnings, PLP is one of the more disciplined areas of probabilistic programming. It builds upon and benefits from the large body of existing work in logic programming, both in semantics and implementation, but also presents new challenges to the field. PLP reasoning often requires the evaluation of large number of possible states before any answers can be produced thus breaking the sequential search model of traditional logic programs.

While PLP has already contributed a number of formalisms, systems and well understood and established results in: parameter estimation, tabling, marginal probabilities and Bayesian learning, many questions remain open in this exciting, expanding field in the intersection of AI, machine learning and statistics.

This workshop aims to bring together researchers in all aspects of probabilistic logic programming, including theoretical work, system implementations and applications. Interactions between theoretical and applied minded researchers are encouraged. The presence of this workshop at ICLP is intended to encourage collaboration with researchers from the field of logic programming,

This workshop provides a forum for the exchange of ideas, presentation of results and preliminary work in all areas related to probabilistic logic programming; including, but not limited to:


The registration for PLP2021 is managed through the ICLP registration system. To register, visit the ICLP registration page.

Important Dates

Papers due: August 1st, 2021 August 15th, 2021
Notification to authors:September 1st, 2021 September 7th, 2021
Camera ready version due:September 10th, 2021 September 14th, 2021
Workshop date: September 20th, 2021

(the deadline for all dates is intended Anywhere on Earth (UTC-12))

Accepted Papers

Invited Speakers

Paper Submissions

Submissions will be managed via EasyChair:

Contributions should be prepared in the 1-column CEURART style (also available as an overleaf project). A mixture of papers are sought including: new results, work in progress as well as technical summaries of recent substantial contributions. Papers presenting new results should be 6-15 pages in length. Work in progress and technical summaries can be shorter (2-5 pages). The workshop proceedings will clearly indicate the type of each paper.

At least one author of each accepted paper will be required to attend the workshop to present the contribution.

Programme Committee

PC Chairs

PC Members

Last modified: 14 September 2021