Article | REF: H3285 V1

Verification, Validation and Test of Complex Systems

Author: Frédérique VALLÉE

Publication date: February 10, 2026 | Lire en français

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    1. Fundamentals

    1.1 Issues and general objectives

    Complex systems comprise a large number of heterogeneous components with multiple interactions. They can evolve through learning and exhibit a phenomenon known as emergence, meaning that their overall behavior is not equal to the sum of the behaviors of their parts. As a result, their validation is not easy .

    In practice, testing a complex system and making the necessary corrections now accounts for more than half of the project cost. The testing phases often take longer than the design...

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