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statistique, théorie et gestion de portefeuille - Docs at ISFA

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124 3. Distributions exponentielles étirées contre distributions régulièrement variables<br />

MLE of ξ<br />

1.8<br />

1.6<br />

1.4<br />

1.2<br />

1<br />

0.8<br />

0.6<br />

0.4<br />

0.2<br />

0<br />

MLE of GPD form param<strong>et</strong>er ξ from SE samples, n=50000<br />

c=0.7<br />

c=0.3<br />

−0.2<br />

0 2 4 6 8 10 12 14 16<br />

Number of lower threshold h<br />

Figure 3: Maximum Likelihood estim<strong>at</strong>es of the GPD form param<strong>et</strong>er for Str<strong>et</strong>ched-Exponentail samples of<br />

size 50,000.<br />

60

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