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    題名: 週期為二的多型態分支過程的極限行為之探討
    The limiting behavior of the 2-periodic multitype Branching Process
    作者: 孫偉修
    Sun, Wei-Siou
    貢獻者: 洪芷漪
    Hong, Jyy-I
    孫偉修
    Sun, Wei-Siou
    關鍵詞: 多型態分支過程
    週期二的多型態分支過程
    奇偶數代
    矩陣特徵值
    馬可夫性質
    Multitype branching processes
    2-periodic multitype branching processes
    Odd and even generations
    Matrix eigenvalues
    Markov property
    日期: 2024
    上傳時間: 2024-07-01 12:55:53 (UTC+8)
    摘要: 這篇論文著重於於非齊次多型態分支過程，並且特別強調週期為二的情況。
    在第一章中，我們簡單介紹了分支過程的歷史，並給出一些與Galton-Watson 分支過程和多型分支過程相關的符號和重要定理。
    在第二章中，我們研究了週期為二的多型分支過程，發現了在偶數代和奇數代的長期情況下，族群的數量會成指數增長。具體來說，我們還發現，增長率和型態分解與某些關鍵矩陣的特徵值和特徵向量有關。
    在第三章中，我們討論了族群的祖先型態的分佈。通過從族群中選取一個個體並向前追溯其祖先的型態，我們發現祖先型態分佈的極限呈現出某些馬爾可夫性質。
    This thesis focuses on non-homogeneous multi-type branching processes, with a particular emphasis on those with period of two.
    In Chapter 1, we provide a brief introduction to the history of branching processes, along with some notation and important theorems related to Galton-Watson branching processes and multitype branching processes.
    In Chapter 2, we deal with 2-periodic multitype branching processes and discover that the exponential growth rates and the type decompositions of the population in the long run of even-numbered generations and odd-numbered generations. Precisely, we also find that the growth rates and type decompositions are related to the eigenvalues and eigenvectors of some key matrix.
    In Chapter 3, we discuss the ancestral type distribution of the population. By selecting an individual from the population and tracing the types of its ancestors backward in time, we find that the limit of the distribution on the ancestral types exhibits some Markov properties.
    參考文獻: [1] K.B. Athreya and P.E. Ney. Branching processes. Springer,New York, 1972.
    [2] Theodore Edward Harris et al. The theory of branching processes, volume 6. Springer Berlin, 1963.
    [3] Edward Pollak. Survival probabilities and extinction times for some multitype branching processes. Advances in Applied Probability, 6(3):446–462, 1974.
    [4] Jyy-I Hong and K.B. Athreya. Markov limit of line of decent types in a multitype supercritical branching process. Statistics & Probability Letters, 98:54–58, 2015.
    [5] Jyy-I Hong. Coalescence on supercritical multi-type branching processes. Sankhya A, 77:65–78, 2015.
    [6] Jyy-I Hong. Coalescence on critical and subcritical multitype branching processes. Journal of Applied Probability, 53(3):802–817, 2016.
    描述: 碩士
    國立政治大學
    應用數學系
    109751018
    資料來源: http://thesis.lib.nccu.edu.tw/record/#G0109751018
    資料類型: thesis
    顯示於類別:[應用數學系] 學位論文

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