Ước lượng các mô hình tự hồi quy phi tuyến sử dụng sóng thích ứng theo thiết kế

Annals of the Institute of Statistical Mathematics - Tập 57 Số 2 - Trang 235-253 - 2005
Delouille, Véronique1, Von Sachs, Rainer2
1Solar Physics Department, Royal Observatory of Belgium, Brussels, Belgium
2Institut de Statistique, Université Catholique de Louvain, Louvain-la-Neuve, Belgium

Tóm tắt

Chúng tôi ước lượng các mô hình tự hồi quy phi tuyến sử dụng ước lượng sóng thích ứng theo thiết kế. Chúng tôi chỉ ra hai đặc tính của phép biến đổi sóng thích ứng với một thiết kế tự hồi quy. Thứ nhất, trong một thiết lập tiệm cận, chúng tôi suy ra thứ bậc của ngưỡng loại bỏ toàn bộ tiếng ồn với xác suất tiến tới một cách tiệm cận. Thứ hai, với ngưỡng này, chúng tôi ước lượng các hệ số chi tiết bằng cách ngưỡng mềm các hệ số chi tiết thực nghiệm. Chúng tôi đưa ra một giới hạn trên của rủi ro l2 đối với các hệ số chi tiết ngưỡng mềm này. Cuối cùng, chúng tôi minh họa hành vi của ước lượng sóng thích ứng theo thiết kế trên các tập dữ liệu mô phỏng và thực tế.

Từ khóa

#mô hình tự hồi quy phi tuyến #sóng thích ứng #ước lượng #ngưỡng mềm #rủi ro l2

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