3005/2026/WEB 'Large Language Models (LLMs) and prompt engineering'

The public revelation of ChatGPT in November 2022 and the rapid advancement of large language models (LLMs) have highlighted the potential of this technology to revolutionise investigations and assist law enforcement agencies in addressing the big data challenge.  However, the complexity of this technology has led to its underutilisation by law enforcement, resulting in missed opportunities for large-scale casework in terms of efficacy and efficiency. 

Through this webinar, organised in cooperation with the Europol Innovation Lab, law enforcement investigators and analysts will gain key knowledge of LLMs and prompt engineering that will empower to effectively leverage LLMs in their daily operations. In doing so, investigators will be better equipped to implement a variety of techniques to address the challenges they encounter. This webinar is part of a CEPOL learning and training programme which includes other (recorded) webinars and an onsite course.

By the end of this webinar, participants will be able to:

• Explain the essentials from a large language model in terms of modalities, output, strengths and limitations;
• Detail the differences between small models, medium models and frontier models of LLMs and the conditions how each of them can be used by law enforcement;
• Define engineering of prompts for LLMs and describe the characteristics of good prompts for LLMs;
• Define the term hallucinations related to LLMs and explain why LLMs hallucinate;
• Describe use cases of LLMs for summarisation, entity extraction, translation, classification, anomaly detection, timeline construction and comparing information.

EMPACT training activity

Combatting new forms of organised crime requires more cooperation between police and gendarmes, customs officers, border guards, judges, and prosecutors. EU institutions, agencies and Member States work together to tackle organised and serious international crime through a permanent and key instrument: the European Multidisciplinary Platform Against Criminal Threats (EMPACT).

CEPOL plays a crucial role in the EMPACT mechanism through the provision of specialised training and the identification of training needs within each common security threat. Every year, CEPOL provides a comprehensive training package for each common EU crime priority consisting of onsite, online and exchange training activities.

Check more of CEPOL's EMPACT training activities here.