Object-Centric Event Logs (OCELs) form the basis for Object-Centric Process Mining (OCPM). OCEL 1.0 was first released in 2020 and triggered the development of a range of OCPM techniques. OCEL 2.0 forms the new, more expressive standard, allowing for more extensive process analyses while remaining in an easily exchangeable format. In contrast to the first OCEL standard, it can depict changes in objects, provide information on object relationships, and qualify these relationships to other objects or specific events. Compared to XES, it is more expressive, less complicated, and better readable. OCEL 2.0 offers three exchange formats: a relational database (SQLite), XML, and JSON format. This OCEL 2.0 specification document provides an introduction to the standard, its metamodel, and its exchange formats, aimed at practitioners and researchers alike.

翻译：以对象为中心的事件日志（OCEL）是以对象为中心的过程挖掘（OCPM）的基础。OCEL 1.0于2020年首次发布，推动了多种OCPM技术的发展。OCEL 2.0作为更富有表现力的新标准，可在保持便捷交换格式的同时实现更广泛的过程分析。相较于第一版OCEL标准，它能够描述对象的变化，提供对象关系信息，并限定这些关系对其他对象或特定事件的适用范围。与XES相比，OCEL 2.0更具表现力、更简洁且更易读。该标准提供三种交换格式：关系数据库（SQLite）、XML和JSON格式。本OCEL 2.0规范文档介绍了该标准、其元模型及其交换格式，面向实践者和研究人员。