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基于ALBERT-CRNN的弹幕文本情感分析

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郑州大学学报（理学版） 2021年第3期53卷 1-8页

作者：曾诚温超东孙瑜敏潘列何鹏湖北大学计算机与信息工程学院湖北武汉430062 湖北省软件工程工程技术研究中心湖北武汉430062 智慧政务与人工智能应用湖北省工程研究中心湖北武汉430062

提出一种结合ALBERT预训练语言模型与卷积循环神经网络(convolutional recurrent neural network,CRNN)的弹幕文本情感分析模型ALBERT-CRNN。首先使用ALBERT预训练语言模型获取弹幕文本的动态特征表示,使得句子中同一个词在不同上下文... 详细信息

提出一种结合ALBERT预训练语言模型与卷积循环神经网络(convolutional recurrent neural network,CRNN)的弹幕文本情感分析模型ALBERT-CRNN。首先使用ALBERT预训练语言模型获取弹幕文本的动态特征表示,使得句子中同一个词在不同上下文语境中具有不同的词向量表达;然后利用CRNN对特征进行训练,充分考虑了文本中的局部特征信息和上下文语义关联;最后通过Softmax函数得出弹幕文本的情感极性。在哔哩哔哩、爱奇艺和腾讯视频三个视频平台的弹幕文本数据集上进行实验,结果表明,ALBERT-CRNN模型在三个数据集上的准确率分别达到94.3%、93.5%和94.8%,相比一些传统模型具有更好的效果。

关键词：弹幕文本情感分析词向量预训练语言模型卷积循环神经网络

结合ALBERT和双向门控循环单元的专利文本分类

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计算机应用 2021年第2期41卷 407-412页

作者：温超东曾诚任俊伟张䶮湖北大学计算机与信息工程学院武汉430062 湖北省软件工程工程技术研究中心武汉430062 湖北省智慧政务与人工智能应用工程研究中心武汉430062

随着专利申请数量的快速增长,对专利文本实现自动分类的需求与日俱增。现有的专利文本分类算法大都采用Word2vec和全局词向量(GloVe)等方式获取文本的词向量表示,舍弃了大量词语的位置信息且不能表示出文本的完整语义。针对上述问题,提... 详细信息

随着专利申请数量的快速增长,对专利文本实现自动分类的需求与日俱增。现有的专利文本分类算法大都采用Word2vec和全局词向量(GloVe)等方式获取文本的词向量表示,舍弃了大量词语的位置信息且不能表示出文本的完整语义。针对上述问题,提出了一种结合ALBERT和双向门控循环单元(BiGRU)的多层级专利文本分类模型ALBERT-BiGRU。该模型使用ALBERT预训练的动态词向量代替传统Word2vec等方式训练的静态词向量,提升了词向量的表征能力;并使用BiGRU神经网络模型进行训练,最大限度保留了专利文本中长距离词之间的语义关联。在国家信息中心公布的专利数据集上进行有效性验证,与Word2vec-BiGRU和GloVe-BiGRU相比,ALBERT-BiGRU的准确率在专利文本的部级别分别提高了9.1个百分点和10.9个百分点,在大类级别分别提高了9.5个百分点和11.2个百分点。实验结果表明,ALBERT-BiGRU能有效提升不同层级专利文本的分类效果。

关键词：专利文本文本分类 ALBERT 双向门控循环单元词向量

结合广义自回归预训练语言模型与循环卷积神经网络的文本情感分析方法

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计算机应用 2022年第4期42卷 1108-1115页

作者：潘列曾诚张海丰温超东郝儒松何鹏湖北大学计算机与信息工程学院武汉430062 湖北省软件工程工程技术研究中心(湖北大学) 武汉430062 智慧政务与人工智能应用湖北省工程研究中心(湖北大学) 武汉430062

传统的机器学习方法在对网络评论文本进行情感极性分类时,未能充分挖掘语义信息和关联信息,而已有的深度学习方法虽能提取语义信息和上下文信息,但该过程往往是单向的,在获取评论文本的深层语义信息过程中存在不足。针对以上问题,提出... 详细信息

传统的机器学习方法在对网络评论文本进行情感极性分类时,未能充分挖掘语义信息和关联信息,而已有的深度学习方法虽能提取语义信息和上下文信息,但该过程往往是单向的,在获取评论文本的深层语义信息过程中存在不足。针对以上问题,提出了一种结合广义自回归预训练语言模型(XLNet)与循环卷积神经网络(RCNN)的文本情感分析方法。首先,利用XLNet对文本进行特征表示,并通过引入片段级递归机制和相对位置信息编码,充分利用了评论文本的语境信息,从而有效提升了文本特征的表达能力;然后,利用RCNN对文本特征进行双向训练,并在更深层次上提取文本的上下文语义信息,从而提升了在情感分析任务中的综合性能。所提方法分别在三个公开数据集weibo-100k、waimai-10k和ChnSentiCorp上进行了实验,准确率分别达到了96.4%、91.8%和92.9%。实验结果证明了所提方法在情感分析任务中的有效性。

关键词：评论文本情感分析 XLNet 片段级递归机制循环卷积神经网络

结合BERT和特征投影网络的新闻主题文本分类方法

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计算机应用 2022年第4期42卷 1116-1124页

作者：张海丰曾诚潘列郝儒松温超东何鹏湖北大学计算机与信息工程学院武汉430062 湖北省软件工程工程技术研究中心武汉430062 智慧政务与人工智能应用湖北省工程研究中心武汉430062

针对新闻主题文本用词缺乏规范、语义模糊、特征稀疏等问题,提出了结合BERT和特征投影网络(FPnet)的新闻主题文本分类方法。该方法包含两种实现方式:方式1将新闻主题文本在BERT模型的输出进行多层全连接层特征提取,并将最终提取到的文... 详细信息

针对新闻主题文本用词缺乏规范、语义模糊、特征稀疏等问题,提出了结合BERT和特征投影网络(FPnet)的新闻主题文本分类方法。该方法包含两种实现方式:方式1将新闻主题文本在BERT模型的输出进行多层全连接层特征提取,并将最终提取到的文本特征结合特征投影方法进行提纯,从而强化分类效果;方式2在BERT模型内部的隐藏层中融合特征投影网络进行特征投影,从而通过隐藏层特征投影强化提纯分类特征。在今日头条、搜狐新闻、THUCNews-L、THUCNews-S数据集上进行实验,实验结果表明上述两种方式相较于基线BERT方法在准确率、宏平均F1值上均具有更好的表现,准确率最高分别为86.96%、86.17%、94.40%和93.73%,验证了所提方法的可行性和有效性。

关键词：预训练语言模型文本分类新闻主题 BERT 特征投影网络

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城市轨道交通混凝土抗裂防渗技术研究与应用

混凝土 2024年第2期 1-5页

作者：王育江刘加平万朝栋李明徐文杨旺军东南大学材料科学与工程学院江苏南京210018 江苏苏博特新材料股份有限公司江苏南京211103 中铁十八局集团有限公司天津300350

抑制混凝土开裂渗漏是保障城市轨道交通地下结构建设质量的重点和难点。以城市轨道交通地下车站为例,分析了混凝土开裂的主要原因,介绍了施工期混凝土抗裂性评估与设计方法,提出了混凝土材料抗裂性能控制指标,以及保障指标实现的材料、... 详细信息

抑制混凝土开裂渗漏是保障城市轨道交通地下结构建设质量的重点和难点。以城市轨道交通地下车站为例,分析了混凝土开裂的主要原因,介绍了施工期混凝土抗裂性评估与设计方法,提出了混凝土材料抗裂性能控制指标,以及保障指标实现的材料、施工控制措施,结合实际工程,介绍了成套技术应用效果,为类似工程抗裂防渗建设质量提升提供指导。

关键词：地下结构混凝土开裂收缩渗漏

New insights into multiple provenances evolution of the Jurassic from heavy minerals characteristics in southern Junggar Basin, NW China

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Petroleum Exploration and Development 2019年第1期46卷 67-81页

作者： ZHOU Tianqi WU chaodong YUAN Bo SHI Zhongkui WANG Jialin ZHU wen ZHOU Yanxi JIANG Xi ZHAO Jinyong WANG Jun MA Jian Key Laboratory of Orogenic Belts and Crustal Evolution Ministry of Education School of Earth and Space Sciences Peking University Institute of Oil and Gas Peking University Geophysics Department in Exploration and Development Institution of Xinjiang Oilfield Company Institute of Remote Sensing and Geographical Information System School of Earth and Space Sciences Peking University Petroleum Exploration and Production Research Institute Sinopec Department of Xinjiang Exploration Project Management Sinopec Shengli Oilfield Company

The method of random forest was used to classify the heavy mineral assemblages of 2 418 Jurassic samples in the southern Junggar Basin, and determine the distribution of the heavy mineral assemblages from the same provenance systems. Based on the analysis of heavy minerals assemblages, ZTR index, sedimentary characteristics, U-Pb zircon ages, whole-rock geochemical and paleocurrent direction analysis, the study reveals that five important provenances were providing sediments to the southern Junggar Basin in the Jurassic period: The North Tianshan(NTS), Central Tianshan(CTS), Bogda Mountains, Zhayier Mountains and Kalamaili Mountains. During the Early Jurassic, NTS-CTS, Kalamaili Mountains and Zhayier Mountains are primary provenances, Bogda Mountains started to uplift and supply clastic materials in the Middle Jurassic. There are three sedimentary area in the Jurassic of southern Junggar Basin: the western part, the central part and the eastern part. In the western part, the clastic materials of the Early Jurassic was mainly from NTS blocks and Zhayier Mountains, and the sediments were dominantly derived from the Zhayier Mountains during the Middle–Late Jurassic. In the central part, the main provenance of the Early Jurassic switched from NTS to CTS. In the Xishanyao Formation, the main source went back to NTS again. The NTS was the primary provenance during the sedimentary periods of Toutunhe Formation and Qigu Formation. In the eastern part, the contribution of CTS and Kalamaili Mountains were considered as major provenances in the Early Jurassic-Xishanyao Formation, small proportion of sediments were from NTS. The Bogda mountains uplifted and started to provide sediments to the Junggar Basin in the sedimentary period of Xishanyao Formation, and became the major source during the Toutunhe Formation period, with small amount of sediments from CTS. The provenance from CTS was hindered during the sedimentary period of Qigu Formation owing to the uplifting of the Bogd

关键词： southern Junggar Basin Jurassic source to sink system provenance heavy minerals assemblages random forest

Sedimentary filling and sequence structure dominated by T-R cycles of the Nenjiang Formation in the Songliao Basin

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Science China Earth Sciences 2014年第12期57卷 278-296页

作者： ZHANG ChenChen ZHANG Shun WEI Wei WU chaodong LIANG JiangPing NIU wen DU JinXia FU XiuLi CUI KunNing WANG Chao WANG Hui School of Earth and Space Science Peking University Research Institute of Petroleum Exploration and Development PetroChina Daqing Oil Field Company

The Nenjiang Formation in the Songliao Basin is a symmetrical sequence of progradation-retrogradation,and is formed in the transgression cycle and regression cycle(T-R cycles)of the base level of *** analyzed the drilling,well logging,core data,and seismic profiles of basin level,and by using the sequence stratigraphy,identified one secondary sequence boundary,two third-order sequence boundaries,and eight fourth-order sequence boundaries in the Nenjiang *** eleven sequence boundaries can be divided into structural unconformity,depositional unconformity,flooding surface,and forced regression *** the Nenjiang Formation can be subdivided into one secondary sequence,three third-order sequences,and ten fourth-order *** have restored the sedimentary filling evolution within the stratigraphic framework of fourth-order sequences in the Nenjiang *** sedimentary period of the first member of the Nenjiang Formation was corresponded to the global transgression period,which is also the development period of transgression cycle(T cycle),when the lake basin had the largest scope and deepest sedimentary water,the SB07(the maximum flooding surface)was formed on the top of strata during this period;covering above the SB07,there developed a set of condensation layer-oil shale,which is distributed in the whole basin and is the important source bed and regional ***,a retrogradation sequence was formed in the T cycle of the first member of the Nenjiang Formation,characterized by the retrograding delta at a low *** delta has a giant front,a small plain,and many underwater distributary ***,large gravity flow channels and sublacustrine fans are developed in the front of the *** the depositional period of the second member of the Nenjiang Formation,the R cycle began to develop due to the compression of the pacific tectonic domain;the source direction rotated 90°along with the eastern uplifting of

关键词： transgressive-regressive cycles sedimentary evolution dynamic mechanism Songliao Basin Nenjiang Formation

Serratia surfactantfaciens ***25T,a novel strain that produces serrawettin W2 and prodigiosin simultaneously

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Serratia surfactantfaciens ***25T,a novel strain that produc...

陕西省毒理学会新时代环境与健康学术会议暨第四届会员代表大会

作者： Chun Su Xinrong wen chaodong Zhao Yan Sun Zhi Li College of Life Sciences Shaanxi Normal University

The genus Serratia might produce many useful secondary metabolites,such as prodigiosin and serrawettins,which have potential applications in environmental bioremediation or in the pharmaceutical *** ***25(YD25) can efficiently suppress several important plant pathogenic fungi and bacteria,as well as infection-causing human pathogenic *** metabolite analyses indicate that this strain can simultaneously produce both serrawettin W2 and ***,YD25 is the first published strain in genus Serratia which can parallel-produce prodigiosin and serrawettin W2 as the main bioactive *** studies confirm that YD25 represented a novel species,named as Serratia surfactantfaciens ***,it was found that YD25 produce prodigiosin and Serrawettin W2 simultaneously at 30℃but do not produce both metabolites at 37℃.Therefore,it is predicted that there is a co-regulatory pathway of prodigiosin and Serrawettin W2 in strain ***,a set of CRISPR-Cas9 two-plasmid gene editing system suitable for *** YD25 was *** the gene luxs knock-out and back-up experiments,it had been confirmed that the gene luxs positively regulates the synthesis of prodigiosin and Serrawettin W2 by affecting the synthesis of AI-2 signaling *** conclusion,*** YD25 T would be a typical strain for studying the biosynthesis regulation of both prodigiosin and serrawettin W2,and exploring more useful metabolites.

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长玻纤聚丙烯材料在电链锯外壳上的应用研究

电动工具 2020年第5期 1-4页

作者：温亮姜朝东沙伯基础(中国)研发有限公司上海201319

通过材料性能表征和材料应用研究,分析沙特基础工业公司(SABIC)开发的产品——长玻纤聚丙烯40Y K710应用于电链锯外壳的可行性。对比市场现有高抗冲短玻纤尼龙,长玻纤聚丙烯40Y K710具有相近的拉伸模量、在高湿度条件下刚性的保持度好,... 详细信息

通过材料性能表征和材料应用研究,分析沙特基础工业公司(SABIC)开发的产品——长玻纤聚丙烯40Y K710应用于电链锯外壳的可行性。对比市场现有高抗冲短玻纤尼龙,长玻纤聚丙烯40Y K710具有相近的拉伸模量、在高湿度条件下刚性的保持度好,以及更高的抗冲击强度、更低的密度和两个方向的收缩率差值,但是该材料的热变形温度低于短玻纤尼龙。在实际样件测试中,长玻纤聚丙烯40Y K710具有和短玻纤尼龙接近的耐受螺钉多次扭转性能。因此,判断该材料具备较大潜力替代高抗冲短纤尼龙,继而可赋予电链锯外壳更轻的重量和更稳定的耐湿性能。

关键词：长玻纤聚丙烯尼龙电链锯拉伸模量性能