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基于Stacking-Bagging-Vote多源信息融合模型的财务预警应用 被引量:5
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作者 张露 刘家鹏 田冬梅 《计算机应用》 CSCD 北大核心 2022年第1期280-286,共7页
集成重采样技术可以在一定程度上解决财务预警研究中样本的不平衡性难题,而不同的集成模型与不同的重采样集成技术有不同的适配性。研究发现,Up-Down集成采样与Tomek-Smote集成采样分别适配于Bagging-Vote集成模型和Stacking融合模型。... 集成重采样技术可以在一定程度上解决财务预警研究中样本的不平衡性难题,而不同的集成模型与不同的重采样集成技术有不同的适配性。研究发现,Up-Down集成采样与Tomek-Smote集成采样分别适配于Bagging-Vote集成模型和Stacking融合模型。基于此,构建了Stacking-Bagging-Vote(SBV)多源信息融合模型。首先,将基于Up-Down集成采样的Bagging-Vote模型与基于Tomek-Smote采样的Stacking模型进行融合;然后,加入股票的交易数据,并对该数据用卡尔曼滤波进行处理,从而形成数据层次和模型层次的交互式融合优化;最终,得到SBV多源信息融合模型。该融合模型不仅在预测性能上有了较大的提升,能较好地兼顾模型的预测准确度和预测精确率,并且可以根据利益相关者的实际需要,通过调整模型参数,来选择对应的SBV多源信息融合模型进行财务预警预测。 展开更多
关键词 财务预警 多源信息融合 集成重采样技术 Stacking-Bagging-vote模型 卡尔曼滤波
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Council Votes on Duke Elder,Francois and Gonin Medals and Pathology Award
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《国际眼科杂志》 CAS 2005年第5期1027-1027,共1页
关键词 ICO Council votes on Duke Elder Francois and Gonin Medals and Pathology Award MD
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Risk, Race and Incumbents: The Effect of Authoritarianism on the Vote for Incumbents in 2012
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作者 Maryann Kwakwa 《International Relations and Diplomacy》 2015年第9期579-590,共12页
Using data from the 2012 American National Election Studies (ANES), I assess the impact of authoritarianism on the likelihood to vote for Senate, House and presidential incumbents amongst White and Black Americans. ... Using data from the 2012 American National Election Studies (ANES), I assess the impact of authoritarianism on the likelihood to vote for Senate, House and presidential incumbents amongst White and Black Americans. I find that the influence of authoritarianism on the vote for incumbents depends o11 the race of the voter and the party identification of the incumbent. This suggests that risk-averse voting behavior amongst authoritarians is a function of party affiliation in addition to perceived threat, and heavily qualified by race. 展开更多
关键词 AUTHORITARIANISM RACE risk-attitudes vote choice
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Vote of Confidence
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作者 Ni Yanshuo 《ChinAfrica》 2011年第12期16-17,共2页
Ordinary Chinese citizens are putting themselves forward as China’s democratic process is being accelerated in its legislative bodies elections XU YAN is a busy man.Starting May 26 this year,he has been campaigning f... Ordinary Chinese citizens are putting themselves forward as China’s democratic process is being accelerated in its legislative bodies elections XU YAN is a busy man.Starting May 26 this year,he has been campaigning for the election of the Xiacheng District People’s Congress, Hangzhou City,capital of Zhejiang Province, which will be held at the end of 2011. Xu has embraced technology to get 展开更多
关键词 In TH vote of Confidence
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Majority Vote for Split Future
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作者 Alphonce Shiundu 《ChinAfrica》 2011年第3期22-24,共3页
After the celebrations marking the birth of Africa’s newest nation,much work lies ahead for South Sudan by Alphonce Shiundu IN Nairobi,shirtless men,with white body powder sprinkled on their black chests and shoulder... After the celebrations marking the birth of Africa’s newest nation,much work lies ahead for South Sudan by Alphonce Shiundu IN Nairobi,shirtless men,with white body powder sprinkled on their black chests and shoulders,jumped up and down singing and shouting.Not to be left behind,tall dark women in extravagant bright-colored clothes also ululated as they vigorously shook their shoulders in a beautiful,rhythmical dance. 展开更多
关键词 Majority vote for Split Future
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Australia Votes to Keep Queen
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作者 钱多秀 《大学英语》 2000年第4期6-7,共2页
关键词 Australia votes to Keep Queen
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Vote for your favorite Chinese cities!
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《国际人才交流》 2011年第9期60-60,共1页
The '2011 Amazing China-The Most Attractive Chinese Cities for Foreigners,' an online poll for foreigners to choose their favorite cities,invites all interested foreigners to cast their votes.
关键词 vote for your favorite Chinese cities
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OSAHS患者清醒和睡眠状态下阻塞平面的VOTE评分比较 被引量:6
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作者 黄晓星 陈怀宏 +3 位作者 唐靖 鲁娟 邓月琴 李湘平 《临床耳鼻咽喉头颈外科杂志》 CAS 北大核心 2017年第12期918-924,共7页
目的:比较OSAHS患者清醒和睡眠状态时上气道阻塞情况的VOTE评分。方法:经多导睡眠监测诊断为OSAHS的患者40例,分别进行清醒时Müller's检查及药物诱导睡眠内镜检查(DISE),并录像记录检查结果。统一使用VOTE评分系统描述检查过... 目的:比较OSAHS患者清醒和睡眠状态时上气道阻塞情况的VOTE评分。方法:经多导睡眠监测诊断为OSAHS的患者40例,分别进行清醒时Müller's检查及药物诱导睡眠内镜检查(DISE),并录像记录检查结果。统一使用VOTE评分系统描述检查过程中所观察到上气道的阻塞平面、阻塞程度及阻塞形态,比较两种检查结果的差异,并比较不同阻塞程度的患者间BMI、AHI、最低血氧饱和度及平均血氧饱和度是否存在差异。结果:清醒状态的Müller's检查主要观察到腭咽平面及口咽侧壁平面的阻塞,完全阻塞率分别为52.5%和30.0%。DISE结果提示40例OSAHS患者主要的上气道阻塞部位仍在腭咽平面,以完全阻塞为主(90.0%),其中以环形阻塞(95.0%)最为常见。口咽侧壁完全阻塞率为60.0%,舌根完全阻塞率为17.5%。根据VOTE评分,40例患者DISE检查在腭咽、口咽侧壁、舌根及会厌平面上的得分均高于清醒状态的Müller's检查,均差异有统计学意义(P<0.05)。Müller's检查中,各平面不同阻塞程度患者间的BMI、AHI、最低血氧饱和度及平均血氧饱和度均无统计学差异(P>0.05)。DISE检查结果中,腭咽平面,部分阻塞患者与完全阻塞患者的AHI值及最低血氧饱和度差异有统计学意义(P<0.05);口咽侧壁、舌根及会厌平面,不同阻塞程度的患者间上述指标均无统计学差异(P>0.05)。结论:OSAHS患者DISE检查VOTE评分明显高于Müller's检查,睡眠状态的上气道阻塞平面更多,阻塞程度更重。BMI、AHI、最低血氧饱和度及平均血氧饱和度与VOTE评分中的阻塞严重程度关联不明显。 展开更多
关键词 睡眠呼吸暂停低通气综合征 阻塞性 药物诱导睡眠内镜检查 Müller's检查 vote评分
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OSA患者诱导睡眠内镜下VOTE评分相关因素分析 被引量:5
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作者 陈怀宏 黄晓星 +3 位作者 董一女 黄远授 鲁娟 李湘平 《临床耳鼻咽喉头颈外科杂志》 CAS 北大核心 2019年第10期941-944,共4页
目的:明确OSA患者诱导睡眠内镜(DISE)下VOTE评分的相关因素。方法:收治经整夜标准多导睡眠仪确诊的54例OSA手术患者。于麻醉诱导睡眠状态下对患者行DISE检查,评估患者的咽腔塌陷情况,并对DISE结果进行VOTE评分和相关因素分析。结果:54例... 目的:明确OSA患者诱导睡眠内镜(DISE)下VOTE评分的相关因素。方法:收治经整夜标准多导睡眠仪确诊的54例OSA手术患者。于麻醉诱导睡眠状态下对患者行DISE检查,评估患者的咽腔塌陷情况,并对DISE结果进行VOTE评分和相关因素分析。结果:54例OSA患者DISE各平面阻塞率差异有统计学意义(P=0.000),其中软腭平面阻塞率为98.15%,口咽侧壁阻塞率为81.48%,舌根阻塞率为40.74%,会厌平面阻塞率为11.11%。不同Mallampatis分级患者的舌根塌陷率有差异(P<0.05),不同Friedman分型舌根塌陷率有差异(P<0.05)。DISE下VOTE评分与Friedman分型呈弱相关(r=0.297,P<0.05),和BMI分级(r=0.376,P<0.05),AHI分级(r=0.312,P<0.05),最低血氧分级(r=0.376,P<0.01)呈中等强度相关。结论:DISE的VOTE评分体系中,舌根塌陷率和Mallampatis舌背分级、Freidman临床分型相关。DISE下VOTE评分和BMI、AHI、最低血氧呈中等强度相关,与Friedman分型呈弱相关。 展开更多
关键词 睡眠呼吸暂停 阻塞性 诱导睡眠内镜 vote评分
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药物诱导睡眠内镜VOTE评分一致性分析及影响因素探讨 被引量:2
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作者 陈怀宏 黄远授 +4 位作者 董一女 黄晓星 鲁娟 叶燕清 李湘平 《中华耳鼻咽喉头颈外科杂志》 CAS CSCD 北大核心 2020年第11期1043-1049,共7页
目的探讨临床经验相当的2名医师之间对不同病情程度阻塞性睡眠呼吸暂停低通气综合征(OSAHS)患者的腭咽、口咽、舌根和会厌(VOTE)评分一致性情况,并分析导致评分差异的影响因素。方法该研究为横断面研究。分析南方医科大学南方医院耳鼻... 目的探讨临床经验相当的2名医师之间对不同病情程度阻塞性睡眠呼吸暂停低通气综合征(OSAHS)患者的腭咽、口咽、舌根和会厌(VOTE)评分一致性情况,并分析导致评分差异的影响因素。方法该研究为横断面研究。分析南方医科大学南方医院耳鼻咽喉科2014年12月至2018年7月64例OSAHS患者(男55例,女9例,年龄20~54岁)的术前药物诱导睡眠内镜(drug-induced sleep endoscopy,DISE)检查视频。由2名经验相当的医师单盲行VOTE评分,第3名研究者计算2名评分者间的Kappa值,并根据病例特征使用Fisher精确检验或卡方检验法进一步探讨影响评分一致性因素。结果将64例OSAHS患者依据病情严重程度分为轻度(7例)、中度(30例)、重度(18例)、极重度(9例)4组,并对2名评分者的评估结果行一致性检验。对于轻度OSAHS患者,腭咽及会厌平面的阻塞形态及程度的评估完全一致(Kappa值=1),但对该两个平面是否存在阻塞及口咽及舌根平面的阻塞情况(包括是否阻塞、阻塞形态及程度)的评估则无一致性(P>0.05)。对于中度OSAHS患者,2名评分者对腭咽平面的阻塞形态及程度一致性良好(0.61≤Kappa值≤0.80),在舌根及会厌平面阻塞程度的评估中无一致性(P>0.05),而对4个平面其余阻塞情况评估的一致性一般或中等(0.21≤Kappa值≤0.60)。在对重度OSAHS患者腭咽及会厌平面的评估中,2名评分者对是否存在阻塞的评估完全一致,但阻塞程度则无一致性。虽然口咽平面阻塞程度能达到良好的评估一致性,但对该平面是否阻塞的评估一致性一般。对重度OSAHS患者4个平面其他阻塞情况的评估中,2名评分者间的一致性中等或一般。在对极重度OSAHS患者的评估中,2名评分者在腭咽平面阻塞情况的评估完全一致,但对口咽及舌根平面的阻塞程度、会厌平面的阻塞形态及程度评估则无一致性。而4个平面其他阻塞情况的评估一致性良好或中等。在重度OSAHS患者中,口咽平面是否阻塞的评估差异与扁桃体大小相关(P<0.05)。结论临床经验相当的医师在行VOTE评分时,对腭咽及口咽平面是否阻塞的评估一致性与病情严重程度相关,在病情更重的患者间能够达到更好的评估一致性。其中,评估重度OSAHS患者口咽平面是否阻塞一致性较差的原因在于扁桃体大小的不同,对于扁桃体不大的重度OSAHS患者,口咽平面是否阻塞的评估更需谨慎。 展开更多
关键词 睡眠呼吸暂停 阻塞性 药物诱导睡眠内镜 vote分型 扁桃体分度
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简单规则下Vote Control问题的复杂性分析
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作者 秦勤 王雪瑞 李建 《湖南科技大学学报(自然科学版)》 CAS 北大核心 2013年第1期84-86,共3页
给定候选人集合C,投票集合V=(v1,v2,…,vn)和候选人c∈C,是否存在V的子集V',|V'|≤k,使得c∈r(V\V').该问题在不同的得分规则下复杂性是不同的.在plurality规则的基础上证明了Reto规则下Vote Control问题是多项式时间可解的... 给定候选人集合C,投票集合V=(v1,v2,…,vn)和候选人c∈C,是否存在V的子集V',|V'|≤k,使得c∈r(V\V').该问题在不同的得分规则下复杂性是不同的.在plurality规则的基础上证明了Reto规则下Vote Control问题是多项式时间可解的,并给出了k'-approval规则下该问题是NP-Complete的证明. 展开更多
关键词 vote Control问题 复杂性 得分规则
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How to implement the‘one patient,one vote’principle under the framework of estimand
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作者 Naitee Ting 《Statistical Theory and Related Fields》 CSCD 2023年第3期202-212,共11页
The scientific foundation of a modern clinical trial is randomization–each patient is randomized to a treatment group,and statistical comparisons are made between treatment groups.Because the study units are individu... The scientific foundation of a modern clinical trial is randomization–each patient is randomized to a treatment group,and statistical comparisons are made between treatment groups.Because the study units are individual patients,this‘one patient,one vote’principle needs to be fol-lowed–bothinstudydesignandindataanalysis.Fromthephysicians’pointofview,eachpatient is equally important,and they need to be treated equally in data analysis.It is critical that statisti-cal analysis should respect design and study design is based on randomization.Hence from both statistical and medical points of view,data analysis needs to follow this‘one patient,one vote’principle.Under ICH E9(R1),five strategies are recommended to establish‘estimand’.This paper discusses how to implement these strategies using the‘one patient,one vote’principle. 展开更多
关键词 Estimand LOCF one patient one vote
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Majority-Vote on Undirected Barab´asi-Albert Networks
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作者 F.W.S.Lima 《Communications in Computational Physics》 SCIE 2007年第2期358-366,共9页
On Barab´asi-Albert networks with z neighbours selected by each added site,the Ising model was seen to show a spontaneous magnetisation.This spontaneous magnetisation was found below a critical temperature which ... On Barab´asi-Albert networks with z neighbours selected by each added site,the Ising model was seen to show a spontaneous magnetisation.This spontaneous magnetisation was found below a critical temperature which increases logarithmically with system size.On these networks the majority-vote model with noise is now studied through Monte Carlo simulations.However,in this model,the order-disorder phase transition of the order parameter is well defined in this system and this was not found to increase logarithmically with system size.We calculate the value of the critical noise parameter qc for several values of connectivity z of the undirected Barab´asiAlbert network.The critical exponentesβ/ν,γ/νand 1/νwere also calculated for several values of z. 展开更多
关键词 Monte Carlo simulation vote NETWORKS nonequilibrium.
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Predicted Mean Vote of Subway Car Environment Based on Machine Learning
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作者 Kangkang Huang Shihua Lu +3 位作者 Xinjun Li Ke Feng Weiwei Chen Yi Xia 《Big Data Mining and Analytics》 EI CSCD 2023年第1期92-105,共14页
The thermal comfort of passengers in the carriage cannot be ignored.Thus,this research aims to establish a prediction model for the thermal comfort of the internal environment of a subway car and find the optimal inpu... The thermal comfort of passengers in the carriage cannot be ignored.Thus,this research aims to establish a prediction model for the thermal comfort of the internal environment of a subway car and find the optimal input combination in establishing the prediction model of the predicted mean vote(PMV)index.Data-driven modeling utilizes data from experiments and questionnaires conducted in Nanjing Metro.Support vector machine(SVM),decision tree(DT),random forest(RF),and logistic regression(LR)were used to build four models.This research aims to select the most appropriate input variables for the predictive model.All possible combinations of 11 input variables were used to determine the most accurate model,with variable selection for each model comprising 102350 iterations.In the PMV prediction,the RF model was the best when using the correlation coefficients square(R2)as the evaluation indicator(R^(2):0.7680,mean squared error(MSE):0.2868).The variables include clothing temperature(CT),convective heat transfer coefficient between the surface of the human body and the environment(CHTC),black bulb temperature(BBT),and thermal resistance of clothes(TROC).The RF model with MSE as the evaluation index also had the highest accuracy(R^(2):0.7676,MSE:0.2836).The variables include clothing surface area coefficient(CSAC),CT,BBT,and air velocity(AV).The results show that the RF model can efficiently predict the PMV of the subway car environment. 展开更多
关键词 predicted mean vote random forest variable selection thermal comfort
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Tsinghua University Voted Formal Member of PIM
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《Tsinghua Science and Technology》 SCIE EI CAS 2006年第1期87-87,共1页
关键词 Tsinghua University voted Formal Member of PIM MBA
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Should Car Restrictions on Beijing’s Roads Be Put to a Vote?
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《Beijing Review》 2008年第40期46-47,共2页
For the duration of this year’s Olympics and Paralympics, Beijing reduced vehicles on its roads every day by about 40 percent (1.3 million) through putting in place
关键词 Should Car Restrictions on Beijing’s Roads Be Put to a vote BE
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Vote Points to Kyrgyzstan’s Future
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作者 LIU GUILING 《Beijing Review》 2010年第28期14-15,共2页
Approval of a new Constitution is expected to bring stability to Kyrgyzstan on June 27, a con- stitutional refer- endum was held in Kyrgyzstan. The Central Election Commission
关键词 vote Points to Kyrgyzstan’s Future
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2005 PRPA Survey Majority of PR Professionals Vote for Accreditation
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《国际公关》 2006年第3期95-96,共2页
Results of the 2005 PRPA Survey indicated that the majority of PR professional respondents are interested in going through an accreditation process for better public recognition.
关键词 PRPA Survey Majority of PR Professionals vote for Accreditation
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Japan's Aeon voted to build three shopping centers
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作者 Liu Xinxin 《纺织服装周刊》 2012年第11期56-56,共1页
Recently,the AEON Corporation of Japan announced that it will be stationed in Wuhan, to build three large shopping centers. AEON Co.,Ltd.had signed a letter of intent with Wuhan municipal government,
关键词 Japan’s Aeon voted to build three shopping centers
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