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.