Article(id=1228279673042432039, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1228279664221815452, articleNumber=null, orderNo=null, doi=10.12404/j.issn.1671-1815.2404594, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1718726400000, receivedDateStr=2024-06-19, revisedDate=1745683200000, revisedDateStr=2025-04-27, acceptedDate=null, acceptedDateStr=null, onlineDate=1770774294385, onlineDateStr=2026-02-11, pubDate=1754582400000, pubDateStr=2025-08-08, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1770774294385, onlineIssueDateStr=2026-02-11, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1770774294385, creator=13701087609, updateTime=1770774294385, updator=13701087609, issue=Issue{id=1228279664221815452, tenantId=1146029695717560320, journalId=1146123166801305609, year='2025', volume='25', issue='22', pageStart='9211', pageEnd='9648', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1770774292283, creator=13701087609, updateTime=1770777611996, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1228293588207992892, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1228279664221815452, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1228293588207992893, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1228279664221815452, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=9445, endPage=9453, ext={EN=ArticleExt(id=1228279674518827140, articleId=1228279673042432039, tenantId=1146029695717560320, journalId=1146123166801305609, language=EN, title=The Bolt Classification Method Based on the Historical Dynamic Weighted Loss Model, columnId=1228279665928897192, journalTitle=Science Technology and Engineering, columnName=Papers·Automation and Computational Technology, runingTitle=null, highlight=null, articleAbstract=
Bolts are the key to the stable connection of high-altitude equipment, but they are prone to abnormalities such as loosening under the influence of various factors, threatening the safety of the equipment. Currently, bolt detection methods based on deep learning are faced with the problems of class imbalance and label missing. Existing deep-learning-based bolt detection methods suffer from class imbalance and missing labels. A HDWL(historical dynamic weighted loss) model based on semi-supervised pseudo-label learning was proposed. By dynamic weighted orthogonality and class-adaptive fair punishment, the model classification was evaluated with historical data. Adaptive punishment was introduced to prevent overfitting and focus more on hard-to-classify samples, boosting model performance. Experiments showed that the HDWL model achieved significantly higher accuracy than other methods, with advantages in minority-class training and feature focus.
, correspAuthors=Wei FANG, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Zhen-feng XÜ, Peng ZHAN, Wei FANG, Qiang SUN), CN=ArticleExt(id=1228279679182893467, articleId=1228279673042432039, tenantId=1146029695717560320, journalId=1146123166801305609, language=CN, title=基于历史动态加权损失模型的螺栓分类方法, columnId=1228279666075697835, journalTitle=科学技术与工程, columnName=论文·自动化技术、计算机技术, runingTitle=null, highlight=null, articleAbstract=
螺栓是高空设备稳固连接的关键,但易受多种因素影响而出现松动等异常,威胁设备安全。当前基于深度学习的螺栓检测方法面临类不平衡和标签缺失问题。提出了基于半监督伪标签学习的历史动态加权损失(historical dynamic weighted loss,HDWL)模型。通过动态加权一致性正交化和类自适应公平惩罚,利用历史数据评估模型分类效果,引入自适应惩罚防止过拟合,增强对难分类样本的关注,提升模型性能。实验表明,HDWL 模型的准确率相比其他方法有显著提高,在少数类训练和特征关注方面具有优势。
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, authorsList=徐振峰, 占鹏, 方薇, 孙强)}, authors=[Author(id=1228369852671394785, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=xuzhf@hfuu.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1228369852784640997, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, authorId=1228369852671394785, language=EN, stringName=Zhen-feng XÜ, firstName=Zhen-feng, middleName=null, lastName=XÜ, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 School of Advanced Manufacturing Engineering, Hefei University, Hefei 230601, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1228369854172955627, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, authorId=1228369852671394785, language=CN, stringName=徐振峰, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 合肥大学先进制造工程学院, 合肥 230601, bio={"content":"
徐振峰(1981—),男,汉族,山东菏泽人,博士,副教授。研究方向:深度学习与智能感知。E-mail:xuzhf@hfuu.edu.cn。
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徐振峰(1981—),男,汉族,山东菏泽人,博士,副教授。研究方向:深度学习与智能感知。E-mail:xuzhf@hfuu.edu.cn。
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2 Institute of Intelligent Machinery, Hefei Institute of Material Science, Chinese Academy of Sciences, Hefei 230031, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1228369854797905932, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, authorId=1228369854596579328, language=CN, stringName=方薇, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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2 中国科学院合肥物质科学研究院智能机械研究所, 合肥 230031, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1228369852579120090, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, xref=2, ext=[AuthorCompanyExt(id=1228369852587508700, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, companyId=1228369852579120090, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1 School of Advanced Manufacturing Engineering, Hefei University, Hefei 230601, China), AuthorCompanyExt(id=1228369852491039699, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, companyId=1228369852470068176, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 合肥大学先进制造工程学院, 合肥 230601)]), AuthorCompany(id=1228369852579120090, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, xref=2, ext=[AuthorCompanyExt(id=1228369852587508700, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, companyId=1228369852579120090, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 Institute of Intelligent Machinery, Hefei Institute of Material Science, Chinese Academy of Sciences, Hefei 230031, China), AuthorCompanyExt(id=1228369852595897308, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, companyId=1228369852579120090, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 中国科学院合肥物质科学研究院智能机械研究所, 合肥 230031)])], figs=[ArticleFig(id=1228369856337215605, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, language=EN, label=Fig.1, caption=
Framework of HDWL, figureFileSmall=AW4XSwe6veBfqjoYBSEQKg==, figureFileBig=MURfzNnIkBHdpI0ehYrjDA==, tableContent=null), ArticleFig(id=1228369856454656126, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, language=CN, label=图1, caption=
HDWL框架 τ为伪标签阈值;$ \mathcal{L}_\mathrm{~u~}{\mathcal{L}}_\mathrm{~s~}{\mathcal{L}}_\mathrm{~d}$分别为模型的半监督损失函数、有监督损失函数与自适应惩罚项
, figureFileSmall=AW4XSwe6veBfqjoYBSEQKg==, figureFileBig=MURfzNnIkBHdpI0ehYrjDA==, tableContent=null), ArticleFig(id=1228369856580485255, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, language=EN, label=Fig.2, caption=
Categories of the bolt dataset, figureFileSmall=Ty2bpS9xaDVdX3mJ5aBbzg==, figureFileBig=VX/vvyGqio1r4y3AbD/9kg==, tableContent=null), ArticleFig(id=1228369856672759952, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, language=CN, label=图2, caption=
螺栓数据集种类, figureFileSmall=Ty2bpS9xaDVdX3mJ5aBbzg==, figureFileBig=VX/vvyGqio1r4y3AbD/9kg==, tableContent=null), ArticleFig(id=1228369856777617555, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, language=EN, label=Fig.3, caption=
Number of predictedresults for each category, figureFileSmall=FVBdo+1lOTu+n49rtNcbFg==, figureFileBig=sqYL9b6hLWySs4bdqbDXnw==, tableContent=null), ArticleFig(id=1228369856945389724, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, language=CN, label=图3, caption=
各分类的模型预测结果数量, figureFileSmall=FVBdo+1lOTu+n49rtNcbFg==, figureFileBig=sqYL9b6hLWySs4bdqbDXnw==, tableContent=null), ArticleFig(id=1228369857062830244, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, language=EN, label=Fig.4, caption=
Historical accuracy of the model, figureFileSmall=J5MpahS6kc+sHReZ4wwGWA==, figureFileBig=jKI+Fqlat1GjE7HXXoetjA==, tableContent=null), ArticleFig(id=1228369857259962542, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, language=CN, label=图4, caption=
模型历史准确率, figureFileSmall=J5MpahS6kc+sHReZ4wwGWA==, figureFileBig=jKI+Fqlat1GjE7HXXoetjA==, tableContent=null), ArticleFig(id=1228369858597945530, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, language=EN, label=Fig.5, caption=
Sensitivity analysis of historical parameter weights, figureFileSmall=Iu6UpvkPxLcaev507yCEtg==, figureFileBig=FrJAMaRad8yzclZgHNZkBQ==, tableContent=null), ArticleFig(id=1228369858740551877, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, language=CN, label=图5, caption=
历史参数权值敏感度分析, figureFileSmall=Iu6UpvkPxLcaev507yCEtg==, figureFileBig=FrJAMaRad8yzclZgHNZkBQ==, tableContent=null), ArticleFig(id=1228369858832826571, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, language=EN, label=Fig.6, caption=
Comparison of the number of erroneous samples per round for HDWL vs. the unweighted algorithm, figureFileSmall=ruEiEPwVpJPEgjH3rw8h/Q==, figureFileBig=4rMdhswDvh1ICT25mFWxCg==, tableContent=null), ArticleFig(id=1228369858950267093, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, language=CN, label=图6, caption=
HDWL与不加权算法每轮错误样本数对比, figureFileSmall=ruEiEPwVpJPEgjH3rw8h/Q==, figureFileBig=4rMdhswDvh1ICT25mFWxCg==, tableContent=null), ArticleFig(id=1228369859059319007, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, language=EN, label=Fig.7, caption=
Comparison of loss values with predicted values for categorization loss by algorithms, figureFileSmall=MJXtyaMX8u+G4uFD1LKBAQ==, figureFileBig=2ZPROp5NqwJh8ihUH4xDnQ==, tableContent=null), ArticleFig(id=1228369859159982315, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, language=CN, label=图7, caption=
各算法分类损失损失值与预测值的比较, figureFileSmall=MJXtyaMX8u+G4uFD1LKBAQ==, figureFileBig=2ZPROp5NqwJh8ihUH4xDnQ==, tableContent=null), ArticleFig(id=1228369859239674099, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, language=EN, label=Fig.8, caption=
Model decision visualization, figureFileSmall=5jMNUQ0rxHIcAJ7vU0GxTQ==, figureFileBig=Ygbk3Z85yO5Sk/k9eap1cg==, tableContent=null), ArticleFig(id=1228369859331948794, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, language=CN, label=图8, caption=
模型决策可视化, figureFileSmall=5jMNUQ0rxHIcAJ7vU0GxTQ==, figureFileBig=Ygbk3Z85yO5Sk/k9eap1cg==, tableContent=null), ArticleFig(id=1228369859445195010, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, language=EN, label=, caption=
, figureFileSmall=null, figureFileBig=null, tableContent=
| 算法:HDWL框架 |
输入:有标签数据集S,无标签数据集U,阈值τ 输出:Model |
for n∈N do //训练次数 S∪U=D for D的数量 do Nua,i=∑[∫${\left(D\right)}_{i}^{t-1}$>τ]Δ[∫${\left(D\right)}_{i}^{t-1}$>τ] Nca,i=∑[∫${\left(D\right)}_{i}^{t-1}$>τ](1-Δ)[∫${\left(D\right)}_{i}^{t-1}$>τ] Ncb,i=∑{1-Δ[∫${\left(D\right)}_{i}^{t-1}$>τ]}Δ[∫(D${)}_{i}^{t-1}$>τ] for J∈{1,2,3} do //j代表类数量种类频率 Ei=$\stackrel{J}{\sum _{j=1}}$(Wj${\stackrel{~}{N}}_{j}$) //上标~代表EMA end ${W}_{i}^{c}$=lg[1/Normal(Ei)]+1//归一化后平滑处理 $ \mathcal{L}$d=Normal(${\stackrel{~}{N}}_{\mathrm{u}\mathrm{a}}$)α[1-$\stackrel{~}{\underset{}{\int }}$(D${)}_{i}^{t}$]/Normal(${\stackrel{~}{N}}_{\mathrm{u}\mathrm{a}}$)α[1-∫(D${)}_{i}^{t}$] end $ \mathcal{L}$s=$\frac{1}{\beta }${H[∫(S)>τ]}${{W}^{\mathrm{c}}}^{(1-{P}_{b})}$//有标签加权交叉熵损失 $ \mathcal{L}$u=$\frac{1}{u\beta }${H[∫(U)>τ]}${{W}^{\mathrm{c}}}^{(1-{P}_{b})}$ $ \mathcal{L}$=Ls+λu$ \mathcal{L}$u+λd$ \mathcal{L}$d //加权后的总损失 end |
), ArticleFig(id=1228369859550052619, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, language=CN, label=, caption=
, figureFileSmall=null, figureFileBig=null, tableContent=
| 算法:HDWL框架 |
输入:有标签数据集S,无标签数据集U,阈值τ 输出:Model |
for n∈N do //训练次数 S∪U=D for D的数量 do Nua,i=∑[∫${\left(D\right)}_{i}^{t-1}$>τ]Δ[∫${\left(D\right)}_{i}^{t-1}$>τ] Nca,i=∑[∫${\left(D\right)}_{i}^{t-1}$>τ](1-Δ)[∫${\left(D\right)}_{i}^{t-1}$>τ] Ncb,i=∑{1-Δ[∫${\left(D\right)}_{i}^{t-1}$>τ]}Δ[∫(D${)}_{i}^{t-1}$>τ] for J∈{1,2,3} do //j代表类数量种类频率 Ei=$\stackrel{J}{\sum _{j=1}}$(Wj${\stackrel{~}{N}}_{j}$) //上标~代表EMA end ${W}_{i}^{c}$=lg[1/Normal(Ei)]+1//归一化后平滑处理 $ \mathcal{L}$d=Normal(${\stackrel{~}{N}}_{\mathrm{u}\mathrm{a}}$)α[1-$\stackrel{~}{\underset{}{\int }}$(D${)}_{i}^{t}$]/Normal(${\stackrel{~}{N}}_{\mathrm{u}\mathrm{a}}$)α[1-∫(D${)}_{i}^{t}$] end $ \mathcal{L}$s=$\frac{1}{\beta }${H[∫(S)>τ]}${{W}^{\mathrm{c}}}^{(1-{P}_{b})}$//有标签加权交叉熵损失 $ \mathcal{L}$u=$\frac{1}{u\beta }${H[∫(U)>τ]}${{W}^{\mathrm{c}}}^{(1-{P}_{b})}$ $ \mathcal{L}$=Ls+λu$ \mathcal{L}$u+λd$ \mathcal{L}$d //加权后的总损失 end |
), ArticleFig(id=1228369859659104531, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, language=EN, label=Table 1, caption=
Accuracy of different class imbalance algorithms on the dataset
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方法 | 无标签数量样本的准确率/% |
| 10 | 40 | 100 |
| Fixmatch | 89.58 | 91.25 | 92.13 |
Focal Loss Dwb Loss FreeMatch | 87.69 | 90.77 | 93.10 |
| 89.05 | 91.23 | 92.96 |
| 90.12 | 92.83 | 94.2 |
| HDW Loss | 91.08 | 92.49 | 93.81 |
), ArticleFig(id=1228369859793322271, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, language=CN, label=表1, caption=
不同类不平衡算法在数据集上的准确率
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方法 | 无标签数量样本的准确率/% |
| 10 | 40 | 100 |
| Fixmatch | 89.58 | 91.25 | 92.13 |
Focal Loss Dwb Loss FreeMatch | 87.69 | 90.77 | 93.10 |
| 89.05 | 91.23 | 92.96 |
| 90.12 | 92.83 | 94.2 |
| HDW Loss | 91.08 | 92.49 | 93.81 |
), ArticleFig(id=1228369859898179879, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, language=EN, label=Table 2, caption=
Accuracy variation with different adaptive weights
, figureFileSmall=null, figureFileBig=null, tableContent=
| λd | 准确率差/% |
| 0.25 | 0.085 |
| 0.5 | 0.875 |
| 0.75 | 1.248 |
| 1 | 1.154 |
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不同自适应权重时准确率差
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| λd | 准确率差/% |
| 0.25 | 0.085 |
| 0.5 | 0.875 |
| 0.75 | 1.248 |
| 1 | 1.154 |
), ArticleFig(id=1228369860120478013, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, language=EN, label=Table 3, caption=
Evaluation metrics of different class imbalance algorithms with 40 unlabeled samples
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| 方法 | 准确率/ % | 召回率/ % | F1分数/ % | AUC |
| CE Loss | 91.25 | 90.54 | 90.90 | 92.54 |
| Focal Loss | 90.77 | 92.18 | 91.47 | 92.77 |
| Dwb Loss | 91.23 | 91.89 | 91.56 | 93.28 |
| FreeMatch | 92.83 | 90.45 | 91.62 | 91.65 |
| HDW Loss-USAP | 91.14 | 90.28 | 90.71 | 91.13 |
| HDW Loss | 92.49 | 92.86 | 92.68 | 93.54 |
), ArticleFig(id=1228369860246307146, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1228279673042432039, language=CN, label=表3, caption=
不同类不平衡算法在无标签样本为40时的各类评价指标
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| 方法 | 准确率/ % | 召回率/ % | F1分数/ % | AUC |
| CE Loss | 91.25 | 90.54 | 90.90 | 92.54 |
| Focal Loss | 90.77 | 92.18 | 91.47 | 92.77 |
| Dwb Loss | 91.23 | 91.89 | 91.56 | 93.28 |
| FreeMatch | 92.83 | 90.45 | 91.62 | 91.65 |
| HDW Loss-USAP | 91.14 | 90.28 | 90.71 | 91.13 |
| HDW Loss | 92.49 | 92.86 | 92.68 | 93.54 |
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