为了对学术动态、热点及学术发展趋势进行研究，需要对学术研究论文进行数据挖掘研究。首先需要从海量的学术论文中提取有兴趣的信息。针对目前学术论文大多采用PDF格式的现状，重点研究了PDF文件的格式以及对PDF格式操作的各种技术，采用开源函数库PDFBox对PDF格式的学术论文按照规则进行信息的提取，提取的信息主要包括学术论文的标题、作者、单位、关键词、发表时间、摘要等信息。最后对提取信息的正确率进行了统计，有助于针对学术研究的大数据研究。%In order to research the academic dynamics,hot topic and academic development trends,need to carry out the data mining re-search for academic research papers. First of all,extract interest information from the massive papers. For the situation that the current aca-demic papers are mostly used PDF format,mainly study the format of PDF files and a variety of technical operations for PDF operations, open-source library PDFBox is used to extract information for the academic papers with PDF format in accordance with the rules,the ex-tracted information is mainly including academic titles,authors,unit,keyword,publication time,abstract and other information. Finally, the correct rate of extraction of information has been statistical,which is helpful for big data for academic research.
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机译：学术论文，学术论文，语言学，学术论文，学术论文，学术论文，同义词，学术论文，学术论文，学术论文，学术论文，学术论文ampL。 FaC。 pHILOs。 aB型。 praeside Gabriele palander，philos。理论值。教授。 pp。o。哲学硕士学位，纽兰杜斯的伊曼纽尔·伊尔莫尼先生。在审计中。 jurid。死于XXIII Junii mDCCCXIX。 h m m s。
