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요약정보
基于神经网络方法的序列数据分类模型 / Sequence data classification model based on neural network method
Resource Type
Academic Journal
Authors
李良
;
蔡少锋
;
谢耀荣
;
苏建华
;
薛媛
;
谢耀斌
;
Li Liang
;
Cai Shaofeng
;
Xie Yaorong
;
Su Jianhua
;
Xue Yuan
;
Xie Yaobin
Source
计算机时代 / Computer Era
. (4):44-47
Subject
序列数据
神经网络
多分支结构
一维卷积
损失函数
Language
Chinese
ISSN
1006-8228
Online Access
Find it @ DONGA
초록
序列数据处理在天体光谱分类领域是一项非常重要的任务,但是传统的处理方式成本高、效率低.通过构造一种以focal loss作为损失函数的多分支一维卷积神经网络对LAMOST部分序列数据进行了分类,并采用MarcoF1分数作为评价指标.结果表明该模型取得了理想的实验效果,并且focal loss损失函数(其在不平衡数据分类任务中对困难样本增加权重)相比传统的交叉熵损失函数也有更好的预测精度.
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