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    <journal-meta>
      <issn pub-type="ppub">1613-0073</issn>
    </journal-meta>
    <article-meta>
      <title-group>
        <article-title>Preface for the 1st Workshop on Semantic Generative Agents on the Web at ESWC 2025 (SemGenAge2025)</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <string-name>Achim Rettinger</string-name>
          <email>rettinger@uni-trier.de</email>
          <xref ref-type="aff" rid="aff1">1</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Damian Trilling</string-name>
          <email>d.c.trilling@vu.nl</email>
          <xref ref-type="aff" rid="aff2">2</xref>
          <xref ref-type="aff" rid="aff3">3</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Marko Grobelnik</string-name>
          <email>marko.grobelnik@ijs.si</email>
          <xref ref-type="aff" rid="aff0">0</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Workshop</string-name>
        </contrib>
        <aff id="aff0">
          <label>0</label>
          <institution>Jozef Stefan Institut</institution>
          ,
          <addr-line>Jamova cesta 39, 1000 Ljubljana</addr-line>
          ,
          <country country="SI">Slovenia</country>
        </aff>
        <aff id="aff1">
          <label>1</label>
          <institution>Universität Trier</institution>
          ,
          <addr-line>Universitätsring 15, 54296 Trier</addr-line>
          ,
          <country country="DE">Germany</country>
        </aff>
        <aff id="aff2">
          <label>2</label>
          <institution>Universiteit van Amsterdam</institution>
          ,
          <addr-line>Postbus 15791, 1001 NG Amsterdam</addr-line>
          ,
          <country country="NL">The Netherlands</country>
        </aff>
        <aff id="aff3">
          <label>3</label>
          <institution>Vrije Universiteit Amsterdam</institution>
          ,
          <addr-line>De Boelelaan 1105, 1081 HV Amsterdam</addr-line>
          ,
          <country country="NL">The Netherlands</country>
        </aff>
      </contrib-group>
      <pub-date>
        <year>2025</year>
      </pub-date>
      <abstract>
        <p>This preface summarises the 1st Workshop on Semantic Generative Agents on the Web (SemGenAge2025), a ∗Corresponding author. 0000-0003-4950-1167 (A. Rettinger); 0000-0002-2586-0352 (D. Trilling); 0000-0001-7373-5591 (M. Grobelnik) Proceedings</p>
      </abstract>
    </article-meta>
  </front>
  <body>
    <sec id="sec-1">
      <title>1. Introduction</title>
      <p>A quarter of a century ago Berners-Lee originally expressed his vision of the Semantic Web as follows:
“I have a dream for the Web [in which computers] become capable of analyzing allthe
data on the Web – the content, links, and transactions between people and computers. A
“Semantic Web”, which makes this possible, has yet to emerge, but when it does, the
dayto-day mechanisms of trade, bureaucracy and our daily lives will be handled by machines
talking to machines. The “intelligent agents” people have touted for ages will finally
materialize.”</p>
      <p>Nowadays, Large Language Models (LLMs) have materialized and are seemingly providing such
“intelligent agents” capabilities: They are software systems that can perceive their environment through
language and act by generating language with some level of autonomy. With respect to the internet
they are able to analyze data on the web, including communication between people and computers and
they are able to talk to both, other machines and humans.</p>
      <p>Technologically the original vision of agents was based on symbolic knowledge representations (like
RDF, OWL), agents with planning and deductive reasoning capabilities and symbolic agent
communication languages (like FIPA-ACL) for multi-agent interactions and web service calls (like WSDL and
WSCL).This is in stark contrast to how LLMs achieve those capabilities: They are based on
machinelearned knowledge representation from textual web data. LLM-agents exhibit statistical and inductive
inference capabilities and facilitate natural language for receiving instructions, for communication with
humans and between machines.</p>
      <p>While LLM development has attracted huge business interest they also have fundamental limitations
that the original semantic web technologies did not have: Their behavior is not guaranteed to be
correct, controllable and comprehensible. Furthermore, they are computationally ineficient and without
performance guarantees with regard to many tasks. When these characteristics are important, traditional
semantic web technologies could be a better choice.</p>
      <p>This workshop concentrates on technologies and applications that unite the advantages of both
worlds. We particularly invited submission with one of the following characteristics:
https://damiantrilling.net (D. Trilling)</p>
      <p>CEUR</p>
      <p>ceur-ws.org
• Agent knowledge representation: Representations of agents’ states or memories learned from
web data that are interpretable and analyzable.
• Agent reasoning capabilities: Flexible and human-like agent behavior which still is controllable
and interpretable.
• Agent communication: The flexibility and expressiveness of natural language, but also
comprehensible interactions in a formal and interpretable language.</p>
      <p>We are particularly interested in, but not limited to, research on social interactions of any
combination of agent(s) and/or human(s) on the web, including the architectures and platforms enabling and
influencing such interactions:
• Interpretable agents for simulating (nonrational) human behavior
• Agents on the (social) web for analyzing communicative behavior
• Platforms for simulating and researching agent communication and platform mechanics
• Recursive AI agents for higher levels of task complexity, adaptivity, and autonomy
The target audience of this workshops are researchers from various disciplines:
• Semantic technologies and artificial intelligence, proposing and discussing novel technological
advancements in the area of Neurosymbolic AI, Generative Agents, Web Science and Multiagent
Systems.
• Computational Social Sciences, Computational Communication Science, Digital Media Studies,
and related fields, using such technologies for research human communicative behavior on
social networks and the influence of platform mechanics and bots on online discourse, opinion
formation, and (online) behaviour.
• Marketing, customer service and related fields that study (influences on) consumer behaviour by
automating customer relationship management.
2. Organization
2.1. Organizing Committee
2.2. Program Committee
• Achim Rettinger, Trier University
• Damian Trilling, VU Amsterdam &amp; University of Amsterdam
• Marko Grobelnik, Jozef Stefan Institute
• Michael Mäs, Karlsruhe Institute of Technology
• Jonas Fegert, FZI Forschungszentrum Informatik
• Stefen Thoma, FZI Forschungszentrum Informatik
• Simon Münker, Trier University
• Kai Kugler, Trier University
2.3. Keynote speakers
• Denisa Reshef Kera, Senior Lecturer, Bar-Ilan University – Interdisciplinary Studies Unit, Science</p>
      <p>Technology and Society Program
• Dr. Matthias Nickles, School of Computer Science at National University of Ireland, Galway</p>
    </sec>
    <sec id="sec-2">
      <title>Acknowledgments</title>
      <p>The organization of this workshop has been supported by the TWON project (project number 101095095),
a research project funded by the European Union, under the Horizon Europe framework
(HORIZONCL2-2022-DEMOCRACY-01, topic 07). More details about the project can be found on its oficial website:
https://www.twon-project.eu/.</p>
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