典型文献
A Simulation Experiment of a Pipeline Based on Machine Learning for Neutral Hydrogen Intensity Mapping Surveys
文献摘要：
We present a simulation experiment of a pipeline based on machine learning algorithms for neutral hydrogen(H I)intensity mapping(IM)surveys with different telescopes.The simulation is conducted on HI signals,foreground emission,thermal noise from instruments,strong radio frequency interference(sRFI),and mild RFI(mRFI).We apply the Mini-Batch K-Means algorithm to identify sRFI,and Adam algorithm to remove foregrounds and mRFI.Results show that there exists a threshold of the sRFI amplitudes above which the performance of our pipeline enhances greatly.In removing foregrounds and mRFI,the performance of our pipeline is shown to have little dependence on the apertures of telescopes.In addition,the results show that there are thresholds of the signal amplitudes from which the performance of our pipeline begins to change rapidly.We consider all these thresholds as the edges of the signal amplitude ranges in which our pipeline can function well.Our work,for the first time,explores the feasibility of applying machine learning algorithms in the pipeline of IM surveys,especially for large surveys with the next-generation telescopes.
文献关键词：
中图分类号：
作者姓名：
Lin-Cheng Li;Yuan-Gen Wang
作者机构：
School of Computer Science and Cyber Engineering,Guangzhou University,Guangzhou 510006,China
文献出处：
引用格式：
[1]Lin-Cheng Li;Yuan-Gen Wang-.A Simulation Experiment of a Pipeline Based on Machine Learning for Neutral Hydrogen Intensity Mapping Surveys)[J].天文和天体物理学研究,2022(11):63-70
A类：
sRFI,mRFI,foregrounds
B类：
Simulation,Experiment,Pipeline,Based,Machine,Learning,Neutral,Hydrogen,Intensity,Mapping,Surveys,We,present,simulation,experiment,pipeline,machine,learning,algorithms,neutral,hydrogen,intensity,mapping,IM,surveys,different,telescopes,conducted,HI,signals,emission,thermal,noise,from,instruments,strong,radio,frequency,interference,mild,Mini,Batch,Means,identify,Adam,remove,Results,that,there,exists,amplitudes,above,which,performance,our,enhances,greatly,removing,shown,have,little,dependence,apertures,addition,results,are,thresholds,begins,change,rapidly,consider,these,edges,ranges,can,function,well,Our,work,first,explores,feasibility,applying,especially,large,next,generation
AB值：
0.512693
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