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Astronomical Knowledge Entity Extraction in Astrophysics Journal Articles via Large Language Models
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作者 Wujun Shao Rui Zhang +7 位作者 Pengli Ji Dongwei Fan yaohua hu Xiaoran Yan Chenzhou Cui Yihan Tao Linying Mi Lang Chen 《Research in Astronomy and Astrophysics》 SCIE CAS CSCD 2024年第6期140-155,共16页
Astronomical knowledge entities,such as celestial object identifiers,are crucial for literature retrieval and knowledge graph construction,and other research and applications in the field of astronomy.Traditional meth... Astronomical knowledge entities,such as celestial object identifiers,are crucial for literature retrieval and knowledge graph construction,and other research and applications in the field of astronomy.Traditional methods of extracting knowledge entities from texts face numerous challenging obstacles that are difficult to overcome.Consequently,there is a pressing need for improved methods to efficiently extract them.This study explores the potential of pre-trained Large Language Models(LLMs)to perform astronomical knowledge entity extraction(KEE)task from astrophysical journal articles using prompts.We propose a prompting strategy called PromptKEE,which includes five prompt elements,and design eight combination prompts based on them.We select four representative LLMs(Llama-2-70B,GPT-3.5,GPT-4,and Claude 2)and attempt to extract the most typical astronomical knowledge entities,celestial object identifiers and telescope names,from astronomical journal articles using these eight combination prompts.To accommodate their token limitations,we construct two data sets:the full texts and paragraph collections of 30 articles.Leveraging the eight prompts,we test on full texts with GPT-4and Claude 2,on paragraph collections with all LLMs.The experimental results demonstrate that pre-trained LLMs show significant potential in performing KEE tasks,but their performance varies on the two data sets.Furthermore,we analyze some important factors that influence the performance of LLMs in entity extraction and provide insights for future KEE tasks in astrophysical articles using LLMs.Finally,compared to other methods of KEE,LLMs exhibit strong competitiveness in multiple aspects. 展开更多
关键词 astronomical databases:miscellaneous virtual observatory tools methods:data analysis
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结构稀疏优化模型的理论与算法
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作者 胡耀华 李昱帆 +1 位作者 刘艳艳 覃静 《中国科学:数学》 CSCD 北大核心 2024年第7期1045-1070,共26页
结构稀疏优化在压缩感知、信号与图像处理、机器学习和生物医学等领域应用广泛,是优化领域非常热门的研究课题.本文首先介绍稀疏优化与组稀疏优化的相关模型,并概述混合稀疏优化与联合稀疏优化的相关模型及近年来的进展;其次从理论与算... 结构稀疏优化在压缩感知、信号与图像处理、机器学习和生物医学等领域应用广泛,是优化领域非常热门的研究课题.本文首先介绍稀疏优化与组稀疏优化的相关模型,并概述混合稀疏优化与联合稀疏优化的相关模型及近年来的进展;其次从理论与算法两个方面阐述关于稀疏优化与组稀疏优化模型的研究进展,包括相合性理论与求解算法;最后提出一些结构稀疏优化领域值得深入研究的方向.总体来说,结构稀疏优化的研究虽已取得一些成果,但仍存在理论问题亟待解决. 展开更多
关键词 稀疏优化 组稀疏优化 相合性理论 一阶算法 二阶算法 收敛性理论
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Kinetic models of peroxidase activity in potato leaves infected with late blight based on hyperspectral data 被引量:3
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作者 Qinyu Li yaohua hu 《International Journal of Agricultural and Biological Engineering》 SCIE EI CAS 2019年第2期160-165,共6页
Potato late blight,which is caused by Phytophthorainfestans(Mont.)de Bary,is a worldwide devastating disease for potato.It decreased yields of potato and caused unpredictable losses all over the world.Various simple s... Potato late blight,which is caused by Phytophthorainfestans(Mont.)de Bary,is a worldwide devastating disease for potato.It decreased yields of potato and caused unpredictable losses all over the world.Various simple statistical methods and forecasting models have been developed to predict and manage potato late blight.Meanwhile,there is a rising need to develop prediction models reflecting peroxidase(POD)activity,which is an important health index that varies with infection and correlated with stress resistance in plants.Thus,the aim of this research was to develop kinetic models to predict POD activity.Infection-induced changes in potato leaves stored in an artificial climate chest at 25°C were analyzed using hyperspectroscopy.Four prediction models were developed by using linear partial least squares(PLS)and nonlinear support vector machine(SVM)methods based on the full spectrum and effective wavelengths.The effective wavelengths were selected by the successive projection algorithm(SPA).In this study,the prediction model developed by means of SPA-SVM method obtained the best performance,with a Rp(correlation coefficient of prediction)value of 0.923 and a RMSEp(root mean square error of prediction)value of 24.326.Five-order kinetics models according to the prediction model were developed,and late blight disease can be predicted using this model.This study provided a theoretical basis for the prediction of latencies of late blight. 展开更多
关键词 POD(peroxidase)activity kinetic model potato leaves late blight hyperspectral data latency prediction
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Applications of integrative OMICs approaches to gene regulation studies 被引量:1
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作者 Jing Qin Bin Yan +2 位作者 yaohua hu Panwen Wang Junwen Wang 《Frontiers of Electrical and Electronic Engineering in China》 CSCD 2016年第4期283-301,共19页
Functional genomics employs dozens of OMICs technologies to explore the functions of DNA, RNA and protein regulators in gene regulation processes. Despite each of these technologies being powerful tools on their own, ... Functional genomics employs dozens of OMICs technologies to explore the functions of DNA, RNA and protein regulators in gene regulation processes. Despite each of these technologies being powerful tools on their own, fike the parable of blind men and an elephant, any one single technology has a limited ability to depict the complex regulatory system. Integrative OMICS approaches have emerged and become an important area in biology and medicine. It provides a precise and effective way to study gene regulations. Results: This article reviews current popular OMICs technologies, OMICs data integration strategies, and bioinformatics tools used for multi-dimensional data integration. We highlight the advantages of these methods, particularly in elucidating molecular basis of biological regulatory mechanisms. Conclusions: To better understand the complexity of biological processes, we need powerful bioinformatics tools to integrate these OMICs data. Integrating multi-dimensional OMICs data will generate novel insights into system-level gene regulations and serves as a foundation for further hypothesis-driven research. 展开更多
关键词 gene regulatory networks integrative analysis OMICS ChlP-seq RNA-SEQ
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