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  <front>
    <journal-meta>
      <issn pub-type="ppub">1613-0073</issn>
    </journal-meta>
    <article-meta>
      <title-group>
        <article-title>Emerging challenges in legal informatics from machine learning to LLMs - Preface to the proceedings of the 1st PLC workshop</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <string-name>Laura Genga</string-name>
          <email>l.genga@tue.nl</email>
          <xref ref-type="aff" rid="aff1">1</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Hugo A. López</string-name>
          <xref ref-type="aff" rid="aff2">2</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Emilio Sulis</string-name>
          <email>emilio.sulis@unito.it</email>
          <xref ref-type="aff" rid="aff0">0</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Workshop</string-name>
        </contrib>
        <contrib contrib-type="editor">
          <string-name>Legal Machine Learning Challenges, AI-Driven Legal Informatics, Legal Event Logs,</string-name>
        </contrib>
        <aff id="aff0">
          <label>0</label>
          <institution>Computer Science Department, University of Torino</institution>
          ,
          <country country="IT">Italy</country>
        </aff>
        <aff id="aff1">
          <label>1</label>
          <institution>School of Industrial Engineering - Eindhoven University of Technology</institution>
          ,
          <addr-line>Eindhoven</addr-line>
          ,
          <country country="NL">The Netherlands</country>
        </aff>
        <aff id="aff2">
          <label>2</label>
          <institution>Technical University of Denmark</institution>
          ,
          <addr-line>Kgs. Lyngby</addr-line>
          ,
          <country country="DK">Denmark</country>
        </aff>
      </contrib-group>
      <abstract>
        <p>The integration of Artificial Intelligence techniques, machine learning and large language models into legal informatics ofers innovative potential, from enhancing legal research eficiency to supporting legal reasoning. These advancements introduce significant challenges, including issues related to data privacy, bias in legal datasets, and the interpretability of complex algorithms in legal contexts. Emerging challenges involve reliability, fairness, and ethical considerations in AI-driven legal applications. The research contributions presented at a recent workshop on Processes, Law and Compliance aim to deepen these issues for the development of AI applications in the field of legal informatics.</p>
      </abstract>
    </article-meta>
  </front>
  <body>
    <sec id="sec-1">
      <title>1. Legal Informatics</title>
      <p>
        Research in legal informatics has grown significantly in recent decades, driven in large part by the
proliferation of advanced information systems that are increasingly capable of recording, organizing,
and analyzing vast amounts of data generated by legal processes [
        <xref ref-type="bibr" rid="ref1">1</xref>
        ]. These systems allow for the
systematic analysis of the diferent steps of interest in a legal process, including the storage of legal
documents as texts of tenders, court judgments, public procurements.
      </p>
      <p>
        Artificial Intelligence (AI) techniques provide a valuable tool for analyzing legal data to obtain
valuable information to support the work of both government agencies and private companies [
        <xref ref-type="bibr" rid="ref2">2</xref>
        ].
Research in legal informatics has been directly linked to the applications of AI [
        <xref ref-type="bibr" rid="ref3">3</xref>
        ]. Examples of
AIdriven systems include the intersection of Machine Learning (ML), Process Mining (PM), and Natural
Language Processing (NLP) techniques [
        <xref ref-type="bibr" rid="ref4 ref5 ref6">4, 5, 6</xref>
        ]. Nevertheless, AI systems are typically considered black
boxes, i.e. posing explainability issues [
        <xref ref-type="bibr" rid="ref7">7</xref>
        ]. In fact, AI and data-driven techniques do not provide full
transparency of how processes and law intersect [
        <xref ref-type="bibr" rid="ref8">8</xref>
        ].
      </p>
      <p>Within this framework of relevant opportunities and critical issues, research is facing new challenges
in the legislative and information technology application domain. The proceedings of the workshop
Processes, Laws, and Compliance confirm this heterogeneity of aspects. The current section summarizes
the main areas of interest, while the next describes the organization and program of the workshop.</p>
      <sec id="sec-1-1">
        <title>Automated process-oriented analysis and digital law</title>
        <p>The intersection of technology and law has
given rise to a research area focused on the automated, process-oriented analysis of legal systems and
digital law. The recent discipline of PM combines data science and process management to analyze and
optimize real-world business processes based on event log data [9]. This emerging field explores how
data-driven and computational approaches can enhance the understanding, modeling, and application</p>
        <p>CEUR</p>
        <p>ceur-ws.org
of complex legal processes. Research investigated traditional legal workflows and facilitated compliance
improvement, predictive analytics, and performance analysis [10]. Central to this research are methods
that automate legal processes in legal systems, or consider compliance-oriented designs that align with
codified standards and judicial expectations [ 11]. In fact, legal documents such as laws, guidelines,
standards contain information about the underlying legal processes. PM techniques allow for the
discovery of process behaviour within legal artifacts. By analyzing variations in how laws and legal
standards are applied or interpreted, these studies provide valuable insights on legal workflows and
expose ineficiencies. In addition, variant analysis of diferent legal process executions allows a nuanced
view of discrepancies and divergences that can inform better policy development and procedural
refinement [ 12].</p>
      </sec>
      <sec id="sec-1-2">
        <title>Compliance and formal representation of laws Author Agreements</title>
        <p>A relevant research area involves the compliance between formal representations of laws and their
implementation in practical settings [13]. Formal representations, such as digital encodings of legal
rules, can be compared with actual case applications to identify and resolve compliance issues [14].
This line of research enables the development of systems that are compliant by design, where digital
platforms are pre-configured to follow legal norms [ 15]. Approaches as “Rules as Code” involve encoding
regulations and standards directly into software, enabling automated systems that inherently comply
with legal requirements [16]. The paradigm of compliance-by-design has the potential to transform
industries that depend on regulatory adherence, ensuring that digital systems can automatically align
with complex and evolving legal standards.</p>
        <p>Advances in legal modeling and Natural Language Processing The complexity of law also
requires advanced techniques for modeling legal norms [17], while Law includes a set of rules,
exceptions, and interpretations. Research has focused on developing models that capture the conditional,
hierarchical, and interpretative nature of legal norms, which aim to bridge the gap between rigid
digital structures and the flexible, context-sensitive needs of legal reasoning. NLP techniques enable
machines to interpret and extract meaning from legal texts facilitating practical applications, from
automating document review to extracting legal clauses, allowing legal professionals to manage large
volumes of documents eficiently [ 18]. Moreover, NLP techniques are increasingly being used to support
legal reasoning, ofering assistance in interpreting statutory language, analyzing court opinions, and
comparing legal standards across jurisdictions [19].</p>
      </sec>
      <sec id="sec-1-3">
        <title>Visualization and relations in legal data engineering With the growing volume of digital legal</title>
        <p>documents and the complexity of legal processes, visualization and simplification techniques have
gained prominence. Researchers are developing tools that make legal processes more understandable
and accessible, by adopting user-friendly formats that can be easily interpreted by legal practioners [20].
Such tools play a crucial role in enhancing transparency, aiding public understanding, and supporting
efective decision-making within legal settings. Furthermore, advancements in information retrieval
and legal knowledge extraction enhances capabilities for finding relevant legal references, similar
documents, and previous cases, creating a more interconnected legal knowledge base [21].</p>
      </sec>
    </sec>
    <sec id="sec-2">
      <title>2. Outline and rationale for the PLC workshop</title>
      <p>The first international workshop Processes, Laws and Compliance (PLC) intended to provide a forum to
facilitate the exchange of research findings and ideas on data-driven and process-oriented techniques
and practices in the legal domain, fostering collaboration between interdisciplinary experts, researchers,
and practitioners working in IT and law. The workshop has been held in conjunction with the 6th
International Conference on Process Mining (ICPM 2024), Technical University of Denmark, Lyngby,
October 14, 2024.</p>
      <p>The program of the first edition of the PLC workshop included oral presentations of six research
papers out of nine contributions received and accepted at the end of a peer-reviewed process, as well as
three showcase contributions. The workshop has been opened by an invited talk by Prof. Dr. Stefanie
Rinderle-Ma (Technical University of Munich), titled “How can Large Language Models support process
mining and compliance checking?”. The keynote speech explored how LLMs can enhance PM and
compliance checking by automating the interpretation of complex regulations, extracting insights from
unstructured documents, and identifying patterns or deviations in process logs, thereby improving
accuracy and eficiency in compliance verification.</p>
      <p>In the afternoon session of the workshop, participants focused into central and highly relevant
topics for the future of the field. A first topic, “Interdisciplinary Challenges on Processes, Law, and
Compliance” prompted a discussion on the emerging dificulties in integrating business processes, legal
frameworks, and compliance requirements, emphasizing the need for collaboration between experts
from various disciplines. Moreover, a session on “Opportunities and Ideation: Possible Futures and
Afordances in Digital Compliance” involved participants to explore future possibilities, innovations,
and practical applications in digital compliance, fostering a forward-thinking approach to technological
and regulatory advancements.</p>
      <p>Research themes. The discussion focused on the following four themes and related research
questions:
• Theme 1: AI for the legal sector. Benefits and challenges . How can we rethink the legal sector by
leveraging process and data-driven techniques? What are the legal processes that are calling for
support from digital technologies, and how could data and process-driven techniques help to
improve them? What are the enablers, and what are the challenges of applying these techniques
to this domain? Are there relevant case studies already?
• Theme 2: Risk and Compliance Formalization. How can organizations ensure automated processes
are both eficient and compliant, especially when regulations require human judgment or
interpretation? How do legal and process jargon align? For instance, does a legal violation correspond
to violations in a process mining sense? What is undesired behavior and what is the diference
from undefined behavior in laws? What is the legal implication of concepts such as deviations,
workarounds, or anomalies for compliance?
• Theme 3: Adoption of Compliance Frameworks. Automating compliance checks through BPM
systems is desirable but challenging. How should a Compliance Checking Framework be designed
and implemented? Compliance by Design (CdB) or Compliance by Auditing? Is the dream of
CbD attainable? What do we need to make it happen? If not, what are the challenges in Audits?
What are the factors that impede the adoption of compliance technologies in the industry?
• Theme 4 The Human Factor in Compliance. Compliance technologies aim to support legal specialist
in their certification and auditing techniques. What are the gaps in: i. Generating (mathematical)
specifications from legal behavior that correspond to what is expressed in a law? ii. Explaining
the output of process/data-driven technologies in a way that corresponds to legal argumentation
for compliance oficers? What are the requirements to implement tools for non-technical users
(e.g., low-code tools) and how far are we?</p>
      <p>We thank all the contributing speakers, the members of our Program Committee for timely providing
their reviews, and the ICPM Workshop chairs Andrea Delgado and Tijs Slaats for their support.
Workshop Organizers The PLC workshop has been organized by the following co-chairs: Laura
Genga (Technical University of Eindhoven, Netherlands), Hugo A. López (Technical University of
Denmark, Denmark), and Emilio Sulis (University of Turin, Italy).</p>
      <p>Program Committee The Program Commitee of the workshop that also carried out the reviews of
the articles consisted of the following researchers:
• Davide Audrito (University of Bologna)
• Chiara Di Francescomarino (University of Trento)
• Chiara Gallese (University of Turin)
• Roberto Nai (University of Torino)
• Barbara Pernici (Politecnico di Milano)
• Stefanie Rinderle-Ma (Technical University of Munich)
• Livio Robaldo (University of Swansea)
• Massimiliano Ronzani (FBK Trento)
• Giovanni Siragusa (University of Turin)
• Han Van der Aa (University of Vienna)
• Andrea Vandin (Sant’Anna School of Advanced Studies, Pisa)
• Karolin Winter (Technical University of Eindhoven)
Workshop Website Further information on the topics, schedule, keynote presentation, and
further developments of the PLC Workshop can be found at the website: https://sites.google.com/view/
plc-workshop-2024/home.</p>
      <p>Workshop Proceedings This volume includes post-conference papers from the PLC workshop.
In particular, the authors of the six research works agreed to include their paper in the workshop
proceedings. In addition, we invited an author to present a more extensive discussion of his showcase.
[9] W. M. P. van der Aalst, Process Mining - Data Science in Action, Second Edition, Springer, 2016.</p>
      <p>doi:10.1007/978-3-662-49851-4.
[10] R. Nai, E. Sulis, L. Genga, Automated analysis with event log enrichment of the european public
procurement processes, in: T. P. Sales, J. Araújo, J. Borbinha, G. Guizzardi (Eds.), Advances in
Conceptual Modeling - ER 2023 Workshops, Lisbon, Portugal, November 6-9, 2023, Proceedings,
volume 14319 of LNCS, Springer, 2023, pp. 178–188. doi:10.1007/978-3-031-47112-4\_17.
[11] R. Nai, R. Meo, G. Morina, P. Pasteris, Public tenders, complaints, machine learning and
recommender systems: a case study in public administration, Comput. Law Secur. Rev. 51 (2023) 105887.
doi:10.1016/J.CLSR.2023.105887.
[12] A. J. Unger, J. F. dos Santos Neto, M. Fantinato, S. M. Peres, J. Trecenti, R. Hirota, Process
mining-enabled jurimetrics: analysis of a brazilian court’s judicial performance in the business law
processing, in: J. Maranhão, A. Z. Wyner (Eds.), ICAIL ’21: Eighteenth International Conference
for Artificial Intelligence and Law, São Paulo Brazil, June 21 - 25, 2021, ACM, 2021, pp. 240–244.
doi:10.1145/3462757.3466137.
[13] H. A. López, S. Debois, T. Slaats, T. T. Hildebrandt, Business process compliance using reference
models of law, in: H. Wehrheim, J. Cabot (Eds.), Fundamental Approaches to Software Engineering
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Theory and Practice of Software, ETAPS 2020, Dublin, Ireland, April 25-30, 2020, Proceedings,
volume 12076 of Lecture Notes in Computer Science, Springer, 2020, pp. 378–399. doi:10.1007/
978-3-030-45234-6\_19.
[14] I. A. Amantea, L. Robaldo, E. Sulis, G. Boella, G. Governatori, Semi-automated checking for
regulatory compliance in e-health, in: 25th International Enterprise Distributed Object Computing
Workshop, EDOC Workshop 2021, Gold Coast, Australia, October 25-29, 2021, IEEE, 2021, pp.
318–325. doi:10.1109/EDOCW52865.2021.00063.
[15] S. Debois, H. A. López, T. Slaats, A. A. Andaloussi, T. T. Hildebrandt, Chain of events: Modular
process models for the law, in: B. Dongol, E. Troubitsyna (Eds.), Integrated Formal Methods - 16th
International Conference, IFM 2020, Lugano, Switzerland, November 16-20, 2020, Proceedings,
volume 12546 of Lecture Notes in Computer Science, Springer, 2020, pp. 368–386. doi:10.1007/
978-3-030-63461-2\_20.
[16] T. Athan, G. Governatori, M. Palmirani, A. Paschke, A. Z. Wyner, Legalruleml: Design
principles and foundations, in: W. Faber, A. Paschke (Eds.), Reasoning Web. Web Logic Rules
- 11th International Summer School 2015, Berlin, Germany, July 31 - August 4, 2015,
Tutorial Lectures, volume 9203 of Lecture Notes in Computer Science, Springer, 2015, pp. 151–188.
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[17] E. Sulis, L. D. Caro, R. Nanda, Introduction for computer law and security review: special issue
“knowledge management for law”, Comput. Law Secur. Rev. 52 (2024) 105949. doi:10.1016/J.</p>
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[18] F. Yu, L. Quartey, F. Schilder, Exploring the efectiveness of prompt engineering for legal reasoning
tasks, in: A. Rogers, J. L. Boyd-Graber, N. Okazaki (Eds.), Findings of the Association for
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cases: A study on the european court of human rights, Artif. Intell. 317 (2023) 103861. doi:10.
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[20] M. Hagan, Legal Design as a Thing: A Theory of Change and a Set of Methods to Craft a</p>
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