Proceedings of the 4th International Workshop on Learning to Quantify (LQ 2024)

The 4th International Workshop on Learning to Quantify (LQ 2024 – https:
//lq-2024.github.io/) was held in Vilnius, LT, on September 13, 2024, as
a satellite workshop of the European Conference on Machine Learning and
Principles and Practice of Knowledge Discovery in Databases (ECML/PKDD
2024).
The workshop was the second part (Sep 13 afternoon) of a full-day event,
whose first part (Sep 13 morning) consisted of a tutorial on Learning to Quan-
tify presented by Mirko Bunse and Alejandro Moreo. The LQ 2024 workshop
consisted of the presentations of three contributed papers, plu a number of
invited contributions about the LeQua 2024 challenge, i.e., an overview of the
challenge presented by the organisers, plus five brief presentations by LeQua
2024 participants. The program ended with a final collective discussion on
LeQua 2024, on the open problems of learning to quantify, and on future
initiatives. The present volume contains the text of these nine contributions.