The journal track of the 27th European Conference on Artificial Intelligence (ECAI-2024) offered the authors of papers recently accepted for publication by either one of the two leading discipline-wide journals in AI, Artificial Intelligence (AIJ) and the Journal of Artificial Intelligence Research (JAIR), the opportunity to present their work at the conference without undergoing an additional round of reviewing. Papers were eligible only if no part had previously been presented at a conference with archival proceedings. Traditionally, the authors of such papers would have missed out on the opportunity to present their work to a broader research audience. This limitation tends to discourage the submission of original work to journals without prior conference publications on the same topic. The intention of the journal track is to encourage a “journal-first” publication strategy–by giving authors the option to present their work at a suitable conference venue such as ECAI. On the following pages, for each paper presented at the journal track, we list bibliographic information and the abstract of the original publication.