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            <title xml:lang="en">Adaptive estimation for nonparametric circular regression with errors in variables</title>
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                <term xml:lang="en">Circular data</term>
                <term xml:lang="en">Errors-in-variables model</term>
                <term xml:lang="en">Adaptive estimation</term>
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              <p>&lt;div&gt;&lt;p&gt;This paper investigates the nonparametric estimation of a circular regression function in an errors-in-variables framework. Two settings are studied, depending on whether the covariates are circular or linear. Adaptive estimators are constructed and their theoretical performance is assessed through convergence rates over Sobolev and Hölder smoothness classes. Numerical experiments on simulated and real datasets illustrate the practical relevance of the methodology.&lt;/p&gt;&lt;/div&gt;</p>
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