期刊文献+
共找到123,581篇文章
< 1 2 250 >
每页显示 20 50 100
Composite Fractional Trapezoidal Rule with Romberg Integration
1
作者 Iqbal M.Batiha Rania Saadeh +3 位作者 Iqbal H.Jebril Ahmad Qazza Abeer A.Al-Nana Shaher Momani 《Computer Modeling in Engineering & Sciences》 SCIE EI 2024年第9期2729-2745,共17页
The aim of this research is to demonstrate a novel scheme for approximating the Riemann-Liouville fractional integral operator.This would be achieved by first establishing a fractional-order version of the 2-point Tra... The aim of this research is to demonstrate a novel scheme for approximating the Riemann-Liouville fractional integral operator.This would be achieved by first establishing a fractional-order version of the 2-point Trapezoidal rule and then by proposing another fractional-order version of the(n+1)-composite Trapezoidal rule.In particular,the so-called divided-difference formula is typically employed to derive the 2-point Trapezoidal rule,which has accordingly been used to derive a more accurate fractional-order formula called the(n+1)-composite Trapezoidal rule.Additionally,in order to increase the accuracy of the proposed approximations by reducing the true errors,we incorporate the so-called Romberg integration,which is an extrapolation formula of the Trapezoidal rule for integration,into our proposed approaches.Several numerical examples are provided and compared with a modern definition of the Riemann-Liouville fractional integral operator to illustrate the efficacy of our scheme. 展开更多
关键词 Composite fractional Trapezoidal rule Romberg integration
下载PDF
Densification Mechanism of Warm Compaction and Powder Mixture Designing Rules 被引量:10
2
作者 CAO Shun hua,HUANG Bai yun,QU Xuan hui,YI Jian hong(State Key Laboratory for Powder Metallurgy, Central South University of Technology, Changsha 410083, China) 《Journal of Central South University》 SCIE EI CAS 2000年第1期4-6,共3页
By phenomenological analysis of warm compaction, it is found that, compared with the contribution of particle plastical deformation to densification of powder compact,the particle rearrangement is a dominant densifica... By phenomenological analysis of warm compaction, it is found that, compared with the contribution of particle plastical deformation to densification of powder compact,the particle rearrangement is a dominant densification mechanism for powder warm compaction, and the plastical deformation of particles plays an important role in offering accommodating deformation for particle rearrangement and densifying powder compact at the final stage of pressing.In order to attain density gain as high as possible during warm compaction, six rules for designing warm compacting powder mixtures were proposed in detail. 展开更多
关键词 warm compaction densification mechanism powder mixture designing rule
下载PDF
Extraction Fuzzy Linguistic Rules from Neural Networks for Maximizing Tool Life in High-speed Milling Process 被引量:2
3
作者 SHEN Zhigang HE Ning LI Liang 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2009年第3期341-346,共6页
In metal cutting industry it is a common practice to search for optimal combination of cutting parameters in order to maximize the tool life for a fixed minimum value of material removal rate(MRR). After the advent ... In metal cutting industry it is a common practice to search for optimal combination of cutting parameters in order to maximize the tool life for a fixed minimum value of material removal rate(MRR). After the advent of high-speed milling(HSM) pro cess, lots of experimental and theoretical researches have been done for this purpose which mainly emphasized on the optimization of the cutting parameters. It is highly beneficial to convert raw data into a comprehensive knowledge-based expert system using fuzzy logic as the reasoning mechanism. In this paper an attempt has been presented for the extraction of the rules from fuzzy neural network(FNN) so as to have the most effective knowledge-base for given set of data. Experiments were conducted to determine the best values of cutting speeds that can maximize tool life for different combinations of input parameters. A fuzzy neural network was constructed based on the fuzzification of input parameters and the cutting speed. After training process, raw rule sets were extracted and a rule pruning approach was proposed to obtain concise linguistic rules. The estimation process with fuzzy inference showed that the optimized combination of fuzzy rules provided the estimation error of only 6.34 m/min as compared to 314 m/min of that of randomized combination of rule s. 展开更多
关键词 high-speed milling rule extraction neural network fuzzy logic
下载PDF
Non-invasive prediction of non-alcoholic steatohepatitis in Japanese patients with morbid obesity by artificial intelligence using rule extraction technology 被引量:2
4
作者 Daisuke Uehara Yoichi Hayashi +9 位作者 Yosuke Seki Satoru Kakizaki Norio Horiguchi Hiroki Tojima Yuichi Yamazaki Ken Sato Kazuki Yasuda Masanobu Yamada Toshio Uraoka Kazunori Kasama 《World Journal of Hepatology》 CAS 2018年第12期934-943,共10页
AIM To construct a non-invasive prediction algorithm for predicting non-alcoholic steatohepatitis(NASH), we investigated Japanese morbidly obese patients using artificial intelligence with rule extraction technology.M... AIM To construct a non-invasive prediction algorithm for predicting non-alcoholic steatohepatitis(NASH), we investigated Japanese morbidly obese patients using artificial intelligence with rule extraction technology.METHODS Consecutive patients who required bariatric surgery underwent a liver biopsy during the operation. Standard clinical, anthropometric, biochemical measurements were used as parameters to predict NASH and were analyzed using rule extraction technology. One hundred and two patients, including 79 NASH and 23 non-NASH patients were analyzed in order to create the predictionmodel, another cohort with 77 patients including 65 NASH and 12 non-NASH patients were analyzed to validate the algorithm.RESULTS Alanine aminotransferase, C-reactive protein, homeostasis model assessment insulin resistance, albumin were extracted as predictors of NASH using a recursive-rule extraction algorithm. When we adopted the extracted rules for the validation cohort using a highly accurate rule extraction algorithm, the predictive accuracy was 79.2%. The positive predictive value, negative predictive value,sensitivity and specificity were 88.9%, 35.7%, 86.2% and 41.7%, respectively.CONCLUSION We successfully generated a useful model for predicting NASH in Japanese morbidly obese patients based on their biochemical profile using a rule extraction algorithm. 展开更多
关键词 Non-alcoholic STEATOHEPATITIS Artificial intelligence rule extraction MORBID obesity Liver BIOPSY NON-INVASIVE PREDICTION
下载PDF
Analysis on the medication rules and mechanisms of action of traditional Chinese medicine in treating cervical cancer 被引量:1
5
作者 Ying Chen Yao Yang +1 位作者 Xin-Zhe Zhao Guo-Wei Zhang 《Drug Combination Therapy》 2019年第3期173-185,共13页
Objective: To summarize the rule of application of traditional Chinese medicine (TCM) in the prevention and treatment of cervical cancer, and to explore the molecular mechanism of the compatibility of core herbs. Meth... Objective: To summarize the rule of application of traditional Chinese medicine (TCM) in the prevention and treatment of cervical cancer, and to explore the molecular mechanism of the compatibility of core herbs. Methods: Collect relevant literatures on cervical cancer in Chinese National Knowledgey Ifrastructure (CNKI), use TCM inheritance platform system (TCMISSV2.5) for association rules and complex system entropy clustering analysis;use BATMAN-TCM online analysis tools to construct target-pathway-disease network to reveal the underlying mechanisms of action. Results: Among the 78 prescriptions selected, a total of 172 Chinese medicines were used, and the five most frequently used herbs were Huang-bo (Phellodendri Chinrnsis Cortex), Fu-ling (Poria Cocos), Huang-qi (Hedysarum Multijugum Maxim.), Bai-hua-she-she-cao (Hedyotis Diffusae Herba) and Gan-cao (Licorice). Bai-hua-she-she-cao (Hedyotis Diffusae Herba) and Huang-qi (Hedysarum Multijugum Maxim.), Bai-hua-she-she-cao (Hedyotis Diffusae Herba) and Fu-ling (Poria Cocos), Bai-zhu (Atractylodes Macrocephala Koidz.) and Fu-ling (Poria Cocos) are the three most commonly used medicine match. In addition, through cluster analysis, a total of 4 core herbs compatibility and 2 new prescriptions were excavated. Herbs in the new prescriptions which are used to clearing heat-toxin and removing dampness were most frequently used. Through the analysis of the signal pathway of high frequency Chinese medicines, we found that neuroactive ligand-receptor interaction pathway may play important roles. Conclusion: The core Chinese medicines for the prevention and treatment of cervical cancer are mainly clearing heat-toxin and removing dampness. The core Chinese medicines may play their anti-cervical cancer by interfering with the neuroactive ligand-receptor interaction signaling pathway. 展开更多
关键词 CERVICAL cancer Traditional Chinese medicine INHERITANCE platform system MEDICATION rules Mechanism of action Data mining Network PHARMACOLOGY
下载PDF
Interaction Rule between Rare Earths and LowMelting Point Elements in Fe-,Cu-,AI-,Ni-Base Liquid Solutions 被引量:1
6
作者 Du Ting Sun Yunyong +1 位作者 Wu Yeming Wang Longmei 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 1997年第1期15-18,共5页
Interaction rule between representative RE and Sn, Sb, Pb, Cu, S, P low melting point elements respectively in Fe , Cu , Al , Ni base liquid solutions including totally 34 ternary and quarternary systems was inve... Interaction rule between representative RE and Sn, Sb, Pb, Cu, S, P low melting point elements respectively in Fe , Cu , Al , Ni base liquid solutions including totally 34 ternary and quarternary systems was investigated. For each system some thermodynamic properties were obtained, such as the standard free energies of equilibrium reactions, activity interaction coefficients etc .. 展开更多
关键词 rare earth low melting point element FE CU Al and Ni base solution interaction rule
下载PDF
基于ER Rule的多分类器汽车评论情感分类研究
7
作者 周谧 周雅婧 +1 位作者 贺洋 方必和 《运筹与管理》 CSSCI CSCD 北大核心 2024年第5期161-168,共8页
该文针对汽车评论语料的情感二分类问题,提出一种基于证据推理规则的多分类器融合的情感分类方法。在情感特征构建方面,通过实验对比不同特征模型对分类结果的影响,并改进传统的TFIDF权重计算方法。同时,在此基础上使用ER Rule融合不同... 该文针对汽车评论语料的情感二分类问题,提出一种基于证据推理规则的多分类器融合的情感分类方法。在情感特征构建方面,通过实验对比不同特征模型对分类结果的影响,并改进传统的TFIDF权重计算方法。同时,在此基础上使用ER Rule融合不同分类器进行文本情感极性分析,并考虑各分类器的权重和可靠度。最后,爬取汽车网站上的评论数据对上述方法进行测试,并用公开的中文酒店评论语料数据进行了验证,结果表明该方法能够有效集成不同分类器的优点,与传统机器学习分类算法相比,其结果在Recall,F1值和Accuracy三个指标上得到了提高,与目前流行的深度学习算法和集成学习算法相比,其结果总体占优。 展开更多
关键词 证据推理规则 多分类器融合 TFIDF权重 深度学习算法 集成学习算法
下载PDF
Personalized Action Rules for Side Effects Object Grouping
8
作者 Hakim Touati Jieyan Kuang +1 位作者 Ayman Hajja Zbigniew W. Ras 《International Journal of Intelligence Science》 2013年第1期24-33,共10页
There have been multiple techniques to discover action-rules, but the problem of triggering those rules was left exclusively to domain knowledge and domain experts. When meta-actions are applied on objects to trigger ... There have been multiple techniques to discover action-rules, but the problem of triggering those rules was left exclusively to domain knowledge and domain experts. When meta-actions are applied on objects to trigger a specific rule, they might as well trigger transitions outside of the target action rule scope. Those additional transitions are called side effects, which could be positive or negative. Negative side effects could be devastating in some domains such as healthcare. In this paper, we strive to reduce those negative side effects by extracting personalized action rules. We proposed three object-grouping schemes with regards to same negative side effects to extract personalized action rules for each object group. We also studied the tinnitus handicap inventory data to apply and compare the three grouping schemes. 展开更多
关键词 Meta-actions action-rules PERSONALIZATION Optimization GROUPING
下载PDF
BCCLR:A Skeleton-Based Action Recognition with Graph Convolutional Network Combining Behavior Dependence and Context Clues 被引量:3
9
作者 Yunhe Wang Yuxin Xia Shuai Liu 《Computers, Materials & Continua》 SCIE EI 2024年第3期4489-4507,共19页
In recent years,skeleton-based action recognition has made great achievements in Computer Vision.A graph convolutional network(GCN)is effective for action recognition,modelling the human skeleton as a spatio-temporal ... In recent years,skeleton-based action recognition has made great achievements in Computer Vision.A graph convolutional network(GCN)is effective for action recognition,modelling the human skeleton as a spatio-temporal graph.Most GCNs define the graph topology by physical relations of the human joints.However,this predefined graph ignores the spatial relationship between non-adjacent joint pairs in special actions and the behavior dependence between joint pairs,resulting in a low recognition rate for specific actions with implicit correlation between joint pairs.In addition,existing methods ignore the trend correlation between adjacent frames within an action and context clues,leading to erroneous action recognition with similar poses.Therefore,this study proposes a learnable GCN based on behavior dependence,which considers implicit joint correlation by constructing a dynamic learnable graph with extraction of specific behavior dependence of joint pairs.By using the weight relationship between the joint pairs,an adaptive model is constructed.It also designs a self-attention module to obtain their inter-frame topological relationship for exploring the context of actions.Combining the shared topology and the multi-head self-attention map,the module obtains the context-based clue topology to update the dynamic graph convolution,achieving accurate recognition of different actions with similar poses.Detailed experiments on public datasets demonstrate that the proposed method achieves better results and realizes higher quality representation of actions under various evaluation protocols compared to state-of-the-art methods. 展开更多
关键词 action recognition deep learning GCN behavior dependence context clue self-attention
下载PDF
Workout Action Recognition in Video Streams Using an Attention Driven Residual DC-GRU Network 被引量:1
10
作者 Arnab Dey Samit Biswas Dac-Nhuong Le 《Computers, Materials & Continua》 SCIE EI 2024年第5期3067-3087,共21页
Regular exercise is a crucial aspect of daily life, as it enables individuals to stay physically active, lowers thelikelihood of developing illnesses, and enhances life expectancy. The recognition of workout actions i... Regular exercise is a crucial aspect of daily life, as it enables individuals to stay physically active, lowers thelikelihood of developing illnesses, and enhances life expectancy. The recognition of workout actions in videostreams holds significant importance in computer vision research, as it aims to enhance exercise adherence, enableinstant recognition, advance fitness tracking technologies, and optimize fitness routines. However, existing actiondatasets often lack diversity and specificity for workout actions, hindering the development of accurate recognitionmodels. To address this gap, the Workout Action Video dataset (WAVd) has been introduced as a significantcontribution. WAVd comprises a diverse collection of labeled workout action videos, meticulously curated toencompass various exercises performed by numerous individuals in different settings. This research proposes aninnovative framework based on the Attention driven Residual Deep Convolutional-Gated Recurrent Unit (ResDCGRU)network for workout action recognition in video streams. Unlike image-based action recognition, videoscontain spatio-temporal information, making the task more complex and challenging. While substantial progresshas been made in this area, challenges persist in detecting subtle and complex actions, handling occlusions,and managing the computational demands of deep learning approaches. The proposed ResDC-GRU Attentionmodel demonstrated exceptional classification performance with 95.81% accuracy in classifying workout actionvideos and also outperformed various state-of-the-art models. The method also yielded 81.6%, 97.2%, 95.6%, and93.2% accuracy on established benchmark datasets, namely HMDB51, Youtube Actions, UCF50, and UCF101,respectively, showcasing its superiority and robustness in action recognition. The findings suggest practicalimplications in real-world scenarios where precise video action recognition is paramount, addressing the persistingchallenges in the field. TheWAVd dataset serves as a catalyst for the development ofmore robust and effective fitnesstracking systems and ultimately promotes healthier lifestyles through improved exercise monitoring and analysis. 展开更多
关键词 Workout action recognition video stream action recognition residual network GRU ATTENTION
下载PDF
Software Defect Prediction Method Based on Rule Knowledge Extraction Model
11
作者 CHAI Haiyan YAN Ran +1 位作者 HAN Xinyu TANG Longli 《Journal of Donghua University(English Edition)》 EI CAS 2018年第5期422-425,共4页
The software defects are managed through the knowledge base,and defect management is upgraded from the data level to the knowledge level. The rule knowledge is mined from bug data based on a rule-based knowledge extra... The software defects are managed through the knowledge base,and defect management is upgraded from the data level to the knowledge level. The rule knowledge is mined from bug data based on a rule-based knowledge extraction model,and the appropriate strategy is configured in the strategy layer to predict software defects. The model is extracted by direct association rules and extended association rules,which improve the prediction rate of related defects and the efficiency of software testing. 展开更多
关键词 KNOWLEDGE BASE SOFTWARE testing DEFECT prediction ASSOCIATION rule
下载PDF
Rough Set Theory Based Approach for Fault Diagnosis Rule Extraction of Distribution System 被引量:3
12
作者 ZHOU Yong-yong ZHOU Quan +4 位作者 LIU Jia-bin LIU Yu-ming REN Hai-jun SUN Cai-xin LIU Xu 《高电压技术》 EI CAS CSCD 北大核心 2008年第12期2713-2718,共6页
As the first step of service restoration of distribution system,rapid fault diagnosis is a significant task for reducing power outage time,decreasing outage loss,and subsequently improving service reliability and safe... As the first step of service restoration of distribution system,rapid fault diagnosis is a significant task for reducing power outage time,decreasing outage loss,and subsequently improving service reliability and safety.This paper analyzes a fault diagnosis approach by using rough set theory in which how to reduce decision table of data set is a main calculation intensive task.Aiming at this reduction problem,a heuristic reduction algorithm based on attribution length and frequency is proposed.At the same time,the corresponding value reduction method is proposed in order to fulfill the reduction and diagnosis rules extraction.Meanwhile,a Euclid matching method is introduced to solve confliction problems among the extracted rules when some information is lacking.Principal of the whole algorithm is clear and diagnostic rules distilled from the reduction are concise.Moreover,it needs less calculation towards specific discernibility matrix,and thus avoids the corresponding NP hard problem.The whole process is realized by MATLAB programming.A simulation example shows that the method has a fast calculation speed,and the extracted rules can reflect the characteristic of fault with a concise form.The rule database,formed by different reduction of decision table,can diagnose single fault and multi-faults efficiently,and give satisfied results even when the existed information is incomplete.The proposed method has good error-tolerate capability and the potential for on-line fault diagnosis. 展开更多
关键词 粗糙集理论 配电网 故障诊断 提取方法 规则匹配
下载PDF
A New Method for Extraction of Fuzzy Rules from Small Samples
13
作者 张勇 陈晓东 王昕 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 1999年第1期65-68,共4页
Fuzzy netal network (FNN) is a new tool for extraction of fuzzy control rules from experimental data, butno such rule can be extracted directly from small samples. This paper presents a new approach to fuzzy rules and... Fuzzy netal network (FNN) is a new tool for extraction of fuzzy control rules from experimental data, butno such rule can be extracted directly from small samples. This paper presents a new approach to fuzzy rules andmembership function for small samples i. e. clustering by the Hebb differential competition rule and extending eachitem of sample information to the control point in its factor space while BP algorithm is applied to the study of factornetwork weights in it. This approach has ben successfully applied to the simulation of rainfall prediction. 展开更多
关键词 MEMBERSHIP function hebb DIFFERENTIAL COMPETITION rule clustering information EXTENSION Fuzzymodeling
下载PDF
An Object Extraction Model Using Association Rules and Dependence Analysis
14
作者 Li Shen zhi 1, Chen Zhen qiang 1, Zhou Yu ming 1,Xu Bao wen 1,2 1. Department of Computer Science and Engineering, Southeast University, Nanjing 210096,China 2. State Key Laboratory of Software Engineering, Wuhan University, Wuhan 430072,Ch 《Wuhan University Journal of Natural Sciences》 CAS 2001年第Z1期405-409,共5页
Extracting objects from legacy systems is a basic step in system's object orientation to improve the maintainability and understandability of the systems. A new object extraction model using association rules and... Extracting objects from legacy systems is a basic step in system's object orientation to improve the maintainability and understandability of the systems. A new object extraction model using association rules and dependence analysis is proposed. In this model data are classified by association rules and the corresponding operations are partitioned by dependence analysis. 展开更多
关键词 reverse engineering data mining association rules dependence analysis program slicing
下载PDF
Driving rule extraction based on cognitive behavior analysis
15
作者 ZHAO Yu-cheng LIANG Jun +4 位作者 CHEN Long CAI Ying-feng YAO Ming HUA Guo-dong ZHU Ning 《Journal of Central South University》 SCIE EI CAS CSCD 2020年第1期164-179,共16页
In order to make full use of the driver’s long-term driving experience in the process of perception, interaction and vehicle control of road traffic information, a driving behavior rule extraction algorithm based on ... In order to make full use of the driver’s long-term driving experience in the process of perception, interaction and vehicle control of road traffic information, a driving behavior rule extraction algorithm based on artificial neural network interface(ANNI) and its integration is proposed. Firstly, based on the cognitive learning theory, the cognitive driving behavior model is established, and then the cognitive driving behavior is described and analyzed. Next, based on ANNI, the model and the rule extraction algorithm(ANNI-REA) are designed to explain not only the driving behavior but also the non-sequence. Rules have high fidelity and safety during driving without discretizing continuous input variables. The experimental results on the UCI standard data set and on the self-built driving behavior data set, show that the method is about 0.4% more accurate and about 10% less complex than the common C4.5-REA, Neuro-Rule and REFNE. Further, simulation experiments verify the correctness of the extracted driving rules and the effectiveness of the extraction based on cognitive driving behavior rules. In general, the several driving rules extracted fully reflect the execution mechanism of sequential activity of driving comprehensive cognition, which is of great significance for the traffic of mixed traffic flow under the network of vehicles and future research on unmanned driving. 展开更多
关键词 cognitive driving behavior driving rule extraction cognitive theory integrated algorithm
下载PDF
A Guide for Action in Upholding Rule-Based Self-Governance over the Communist Party of China and Strengthening the Institutional Building of Intraparty Rules and Regulation
16
作者 《Contemporary World》 2023年第4期44-48,共5页
Since the Party’s 18th National Congress,the CPC Central Committee with Comrade Xi Jinping at its core has taken institutional construction of Intraparty Rules and Regulations of the Communist Party of China as long-... Since the Party’s 18th National Congress,the CPC Central Committee with Comrade Xi Jinping at its core has taken institutional construction of Intraparty Rules and Regulations of the Communist Party of China as long-term and fundamental measures for rule-based governance over the party.General Secretary Xi Jinping has made a series of important propositions and profound theses on rule-based Party governance. 展开更多
关键词 PARTY COMMUNIST action
下载PDF
Counterexample of Local Fractional Order Chain Rule and Modified Definition of Local Fractional Order
17
作者 FAN Kai ZHOU Cunlong 《Journal of Donghua University(English Edition)》 EI CAS 2020年第6期521-525,共5页
Fractional calculus is a powerful tool for modeling nonlinear systems.It is necessary to discuss the basic properties of fractional order before solving a fractional order model.Using the formula of power function def... Fractional calculus is a powerful tool for modeling nonlinear systems.It is necessary to discuss the basic properties of fractional order before solving a fractional order model.Using the formula of power function defined by local fractional derivative and the chain rule to calculate a compound function,the results are inconsistent.This shows that the chain rule of local fractional derivatives similar to classical calculus is suspicious,and fractional complex transformation based on the chain rule is also suspicious and needs further discussion.In order to overcome this inconsistency,an improved definition of local fractional derivative,which can be regarded as a fractal derivative,is proposed based on the results derived from the relationship between the mass function and the Hausdorff measure. 展开更多
关键词 local fractional order chain rule fractional complex transformation fractal derivative
下载PDF
基于LDA主题模型的GitHub Actions工作流项目推荐算法
18
作者 聂耀明 陈克豪 +1 位作者 程伟 刘杨 《软件导刊》 2024年第3期34-40,共7页
在CI/CD实践中,自动化已成为软件开发实践中的一种规范。GitHub引入GitHub Actions为软件维护者提供自动化的持续集成工作流方案,尽管其为开发者提供了诸多便利,GitHub社区也提供了许多第三方的GitHub Actions服务,但仍然只有极少的项... 在CI/CD实践中,自动化已成为软件开发实践中的一种规范。GitHub引入GitHub Actions为软件维护者提供自动化的持续集成工作流方案,尽管其为开发者提供了诸多便利,GitHub社区也提供了许多第三方的GitHub Actions服务,但仍然只有极少的项目在使用。为了满足开发人员对工作流自动化的需求,减少非开发任务工作量,提出一种基于隐含狄利克雷分布(LDA)主题模型和Jensen-Shannon距离的GitHub Actions工作流项目推荐算法。通过对GitHub Actions存储库的README文件进行主题建模,将GitHub的事件描述文本和用户输入作为模型输入,为正在开发的代码仓库推荐GitHub Actions服务。将该推荐模型与标准的基于余弦相似度的方法进行比较的实验结果表明,该方法能有效改善开源软件仓库的推荐精度。 展开更多
关键词 GitHub actions LDA 工作流 README 代码仓库推荐
下载PDF
Rule Extraction in Transient Stability Study Using Linear Decision Trees 被引量:11
19
作者 SUN Hongbin WANG Kang ZHANG Boming ZHAO Feng 《中国电机工程学报》 EI CSCD 北大核心 2011年第34期I0006-I0006,8,共1页
为了提高精细规则的性能,提出一种基于支持样本的线性决策树的规则提取方法。该方法筛选临近稳定边界的支持样本,作为决策树的输入样本,精简了样本数目;提出基于线性分类器的决策树方法,以得到基于组合属性的安全稳定运行规则。在单机... 为了提高精细规则的性能,提出一种基于支持样本的线性决策树的规则提取方法。该方法筛选临近稳定边界的支持样本,作为决策树的输入样本,精简了样本数目;提出基于线性分类器的决策树方法,以得到基于组合属性的安全稳定运行规则。在单机无穷大系统和IEEE 39节点系统中的对比研究表明:由于考虑了支持样本的特殊性,用线性组合规则代替单属性规则,减少了计算时间,提高了泛化能力,丰富了规则的物理含义,得到的灵敏度信息可用于辅助决策,在安全稳定精细规则提取中具有应用潜力。 展开更多
关键词 英文摘要 内容介绍 编辑工作 期刊
下载PDF
The New Approach of Expansion Baldwin-Aibassov's Rules for Ring-Closing Reaction for d- and f-elements Periodic Table of Elements
20
作者 Aibassov Yerkin Yemelyanova Valentina +2 位作者 Shakieva Tatyana Bulenbaev Maxat Blagikh Evgeniy 《Journal of Chemistry and Chemical Engineering》 2017年第2期75-78,共4页
The authors have studied the effect of a magnetic field on Baldwin's rules. The authors have proposed a new mechanism that takes into account the effect of the angle and energy endo- or exo-cyclization. The authors p... The authors have studied the effect of a magnetic field on Baldwin's rules. The authors have proposed a new mechanism that takes into account the effect of the angle and energy endo- or exo-cyclization. The authors propose to extend the rule Bouldwin not only for sp^3-, sp^2- and sp- orbits, but and for d^1 - d^10 and f^1 - f^14 elements of I-VIII of the Periodic table. 展开更多
关键词 Magnetic field mechanism of the Baldwin's rule endo- or exo-cyclization.
下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部