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A revisionist approach to Jean Piaget's theory of cognitive development has brought new insights that challenge and reinterpret his established ideas. Piaget proposed that the formal operational stage, emerging in adolescence, represents the culmination of cognitive maturity. During this stage, individuals are said to develop abstract thinking, engage in systematic problem-solving, and show a form of egocentrism, believing others are as preoccupied with their behavior as they are...
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Related Experiment Video

Updated: Aug 9, 2025

Evidence-based Knowledge Synthesis and Hypothesis Validation: Navigating Biomedical Knowledge Bases via Explainable AI and Agentic Systems
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Expertise and information: an epistemic logic perspective.

Joseph Singleton1, Richard Booth1

  • 1Cardiff University, Cardiff, UK.

Synthese
|February 23, 2023
PubMed
Summary

This paper introduces a modal logic framework for assessing information source expertise. It defines expertise and information soundness, linking them to epistemic logic and multi-agent knowledge for multiple sources.

Area of Science:

  • Formal Logic
  • Epistemology
  • Artificial Intelligence

Background:

  • Reasoning about information source reliability is crucial in many fields.
  • Existing models often struggle to capture nuanced notions of expertise and soundness.
  • The need for a formal framework to analyze source expertise and its implications.

Purpose of the Study:

  • To present a novel modal logic framework for modeling information source expertise.
  • To define and analyze the concepts of expertise and information soundness.
  • To connect these concepts with established epistemic logic and multi-agent knowledge.

Main Methods:

  • Development of a modal logic framework.
  • Formal definitions of expertise and soundness based on refutation in possible worlds.
Keywords:
Epistemic logicExpertiseKnowledgeModal logic

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  • Interpretation of expertise and soundness within S4 and S5 epistemic logic.
  • Extension to multi-source scenarios with collective expertise notions.
  • Axiomatization of expertise models.

    • Main Results:

    • A formal definition of source expertise based on refutation capabilities.
    • A precise definition of information soundness relative to source expertise.
    • Demonstration of connections between expertise, soundness, and epistemic logic (S4, S5).
    • Introduction of two notions of collective expertise for multiple sources.
    • Sound and complete axiomatisations for various expertise models.

    Conclusions:

    • The proposed modal logic framework provides a rigorous way to reason about information source expertise.
    • Expertise and soundness have clear interpretations within epistemic logic, enhancing our understanding of knowledge.
    • The framework extends effectively to multi-source settings, offering insights into collective knowledge and expertise.