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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
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dc.contributor.advisor | 周承復(CHENG-FU CHOU) | |
dc.contributor.author | Hsin-Min Wu | en |
dc.contributor.author | 吳炘珉 | zh_TW |
dc.date.accessioned | 2021-06-15T14:07:43Z | - |
dc.date.available | 2020-08-20 | |
dc.date.copyright | 2020-08-20 | |
dc.date.issued | 2020 | |
dc.date.submitted | 2020-08-15 | |
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/52086 | - |
dc.description.abstract | 目前,神經網路架構搜尋已經在圖片分類問題上取得了不錯的效果。然而神經網路架構搜尋比較少被應用於其他領域的結果。本論文的目的是用神經網路架構搜尋來找到一個可以用於大腦腫瘤分割問題的神經網路架構。本論文使用基於強化學習的網路架構搜尋方法,並且使用一個遞迴神經網路作為控制器,搜尋一個固定架構之下的細胞結構。為了使搜尋過程能夠加速,在搜尋過程中使用了參數共享使所有的子模型都能共用參數。因為是圖像分割問題,搜尋的目標是在要找出一個類似於U-net的網路中的細胞結構。實驗結果顯示,在Brats的資料集中搜尋得到的架構可以達到和人所設計的架構有同樣優秀的結果。 | zh_TW |
dc.description.abstract | Recently, neural architecture search has achieved state-of-the art performance in the problem of image classification. However, neural architecture search is rarely used in the domain other than image segmentation. The purpose of this paper is to use neural network architecture search to find a neural network architecture which can be used for brain tumor segmentation. In this paper, we use a network architecture search method based on reinforcement learning, and use a recurrent neural network as a controller to search for cell structures in fixed architecture. In order to speed up the search process, parameter sharing is used in the search process so that all child models can share parameters. Because it is an image segmentation problem, we use neural architecture search to find each cell architecture in a U-net like network. The experimental results show that, the searched architecture can achieved state-of-the art performance as human-designed models in the Brats dataset. | en |
dc.description.provenance | Made available in DSpace on 2021-06-15T14:07:43Z (GMT). No. of bitstreams: 1 U0001-0708202015002900.pdf: 1882571 bytes, checksum: e51c489a3248a74544c0a926fbcafffd (MD5) Previous issue date: 2020 | en |
dc.description.tableofcontents | 口試委員會審定書 i 致謝 ii 摘要 iii Abstract iv Contents v List of Figures vii List of Tables viii Chapter 1 Introduction 1 Chapter 2 Related Work 5 2.1 Medical Image Segmentation . . . . . . . . . . . . . . . . . . . . . 5 2.2 Neural Architecture Search . . . . . . . . . . . . . . . . . . . . . . . 7 Chapter 3 Method 11 3.1 Dataset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.1.1 Preprocessing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.1.2 Dice Score and loss . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.1.3 Data Augment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.2 Network Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.2.1 Cell Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 3.2.2 Search Space . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 3.3 Search method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 3.3.1 Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 3.3.2 Reinforcement Learning . . . . . . . . . . . . . . . . . . . . . . . 23 3.3.3 Parameter Sharing . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 3.3.4 Search Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Chapter 4 Experiment 29 Chapter 5 Conclusion 35 References 37 | |
dc.language.iso | en | |
dc.title | 神經架構搜尋用於大腦腫瘤分割 | zh_TW |
dc.title | A Neural Architecture Search Method for Brain Tumor Segmentation | en |
dc.type | Thesis | |
dc.date.schoolyear | 108-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 吳曉光(Hsiao-Kuang Wu),廖婉君(Wanjiun Liao),李明穗(Ming-Sui Lee),蕭輔仁(FU-REN XIAO) | |
dc.subject.keyword | 神經架構搜索,U-net,神經網路,強化學習, | zh_TW |
dc.subject.keyword | Neural Architecture Search,U-net,Neural Network,Reinforcement learning, | en |
dc.relation.page | 40 | |
dc.identifier.doi | 10.6342/NTU202002637 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2020-08-17 | |
dc.contributor.author-college | 電機資訊學院 | zh_TW |
dc.contributor.author-dept | 資訊網路與多媒體研究所 | zh_TW |
顯示於系所單位: | 資訊網路與多媒體研究所 |
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