Tweedie gradient boosting for extremely unbalanced zero-inflated data
نویسندگان
چکیده
منابع مشابه
a new approach to credibility premium for zero-inflated poisson models for panel data
هدف اصلی از این تحقیق به دست آوردن و مقایسه حق بیمه باورمندی در مدل های شمارشی گزارش نشده برای داده های طولی می باشد. در این تحقیق حق بیمه های پبش گویی بر اساس توابع ضرر مربع خطا و نمایی محاسبه شده و با هم مقایسه می شود. تمایل به گرفتن پاداش و جایزه یکی از دلایل مهم برای گزارش ندادن تصادفات می باشد و افراد برای استفاده از تخفیف اغلب از گزارش تصادفات با هزینه پائین خودداری می کنند، در این تحقیق ...
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where RA(T ) is the regret of A and is o(T ). To prove Proposition 4.3, we only need to show that Eqn. 5 holds for some γ ∈ (0, 1]. This is equivalent to showing that there exist a hypothesis h̃ ∈ H (‖h̃‖ = 1), such that 〈h̃, f∗〉 > 0. To see this equivalence, let us assume that 〈h̃, f∗/‖f∗‖〉 = > 0. Let us set h∗ = ‖f∗‖h̃. Using Pythagorean theorem, we can see that ‖h∗ − f∗‖2 = (1− 2)‖f∗‖2. Hence we ...
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ژورنال
عنوان ژورنال: Communications in Statistics - Simulation and Computation
سال: 2020
ISSN: 0361-0918,1532-4141
DOI: 10.1080/03610918.2020.1772302