检索结果-内蒙古大学图书馆

2017 IEEE MTT-S International Microwave and RF Conference, IMaRC 2017

作者： Kumar, L. Pandey, V. Shankar Parthasarathy, H. Shrimali, V. Department of Electronics and Communication Engineering National Institute of Technology Delhi India Department of Physics National Institute of Technology Delhi India Division of Electronics and Communication Engineering Netaji Subhas Institute of Technology Delhi India Department of Electronics and Communication Engineering G.B. Pant Govt. Engineering College Delhi India

The effect of hysteresis induced non-linear and memory effects on transmission line behavior using perturbation theory for non-linear differential equation is analyzed. Generation of higher harmonics is observed. The ... 详细信息

ISBN: (纸本)9781538613207

关键词： Hysteresis

来源：评论

学校读者我要写书评

暂无评论

Offline Scheduling Schemes to Transfer Voluminous Deadline Complying Data in Elastic Optical Networks 24

Offline Scheduling Schemes to Transfer Voluminous Deadline C...

引用

2018 24th National Conference on Communications, NCC 2018

作者： Lyer, Sridhar Singh, Shree Prakash Department of ECE Jain College of Engineering T.S. Nagar Belagavi KA590014 India Division of ECE Netaji Subhas Institute of Technology New Delhi110078 India

ISBN: (纸本)9781538612248

For serving traffic in the inter data centers which provide services such as, duplication of data and migration of the virtual machines, it is requisited to transfer voluminous data for which, under guarantee of a finishing time within the stipulated (i.e., pre-set) deadline, specific latency is tolerable. In the current work, we propose offline routing and spectrum assignment (RSA) schemes in view of the transfer of deadline complying voluminous data demands in elastic optical networks. The proposed schemes, which jointly optimize time and frequency domains, are initially formulated as an integer linear program (ILP). Subsequently, in view of practicality, we propose scalable scheduling techniques which combine three methods of ordering demands, and two schemes of RSA. To evaluate the proposed ILP model and the scheduling methods, we conduct simulations considering realistic network parameters and topologies. The obtained results demonstrate that in comparison to ILP model, scalable methods obtain similar spectrum usage performance within reasonable times. Lastly, based on the results, we also provide a 'rule-of-Thumb' on the selection of appropriate scheduling technique. © 2018 IEEE.

关键词： Scalability

来源：评论

学校读者我要写书评

暂无评论

Cross-Layer Closeness Centrality in Multiplex Social Networks

Cross-Layer Closeness Centrality in Multiplex Social Network...

引用

International Conference on Computing, Communication and Networking Technologies

作者： Ruchi Mittal M. P. S. Bhatia Department of Computer Science Netaji Subhas Institute of Technology New Delhi India

The centrality measure of nodes gives the influential power of the entities in a given network. Closeness centrality measure of a node is the amount to which a node is close to all other nodes. More recently, centrality measures in the multiplex social networks have develops a great interest among researchers. The multiplex social network means the system, which includes multiple networks in the form of layers, and each layer belongs to different types of the association between nodes. Here, we present a new formulation to compute the closeness centrality of nodes for the multiplex social networks or multi-layer networks. There are numerals of approaches defined to find the closeness centrality of the node in a single layer network, the problem for computing the closeness centrality measure for the multiplex networks node is still open. With this, we define a new metric called cross-layer closeness centrality (CCC) for the multiplex social networks. The CCC is the measure, which computes closeness degree of a node to every other node of the multiplex network.

关键词： Social Networks Closeness centrality Multiplex Networks Multi-layer Networks Edges Nodes Centrality Centrality measure

来源：评论

学校读者我要写书评

暂无评论

Redaction of Protected Health Information in EHRs using CRFs and Bi-directional LSTMs

Redaction of Protected Health Information in EHRs using CRFs...

引用

International Conference on Reliability, Infocom Technologies and Optimization (ICRITO) (Trends and Future Directions)

作者： Apar Madan Ann Mary George Apurva Singh M.P.S. Bhatia Divison of Computer Engineering Netaji Subhas Institute of Technology University of Delhi New Delhi India

ISBN: (纸本)9781538646939

This paper describes the de-identification of personally identifiable information (PIIs) in electronic health records (EHRs) using two models of conditional random fields (CRFs) and bidirectional long short term memory networks (LSTMs). Most medical records store private information such as PATIENT NAME, HOSPITAL NAME, LOCATION, etc. that needs to be de-identified or redacted before being passed on for further medical research. The process of removing such information using machine learning techniques is started with pre-processing of raw data by tokenization and detection of sentences. On comparing the techniques, it is noted that CRFs require manual feature engineering to train the model whereas LSTM is capable of handling long term dependencies without much insight about the dataset. Bi-directional LSTM network was used to generate context information from suitable word representations. Finally, a predictive layer was applied to predict the protected health information (PHI) terms having maximum probability. Evaluated with the i2b2 gold data set of clinical narratives of patients of 2014 De-identification challenge, we propose an efficient solution for redaction using two models, both of which achieve good F-scores for PHIs of all types. The LSTM-based model achieved a micro-F1 measure of 0.9592, which performs better than the CRF-based model.

关键词： Hidden Markov models Labeling Task analysis Logic gates Tagging Feature extraction Microsoft Windows

来源：评论

学校读者我要写书评

暂无评论

Trend Analysis in Machine Learning Research Using Text Mining

Trend Analysis in Machine Learning Research Using Text Minin...

引用

2018 IEEE International Conference on Advances in Computing, Communication Control and Networking, ICACCCN 2018

作者： Sharma, Deepak Kumar, Bijendra Chand, Satish Department of Computer Engineering Netaji Subash Institute of Technology New Delhi India School of Computer and Systems Sciences Jawaharlal Nehru University New Delhi India

ISBN: (纸本)9781538641194

This paper aims to identify the trends in machine learning research using text mining. The researcharticles contain significant knowledge and research results. However, they are long and have many noisy results such that it takes a lot of human efforts to analyze them. Text mining can be used to analyze and extract useful information from a large number of research articles quickly and automatically. Text mining is the method of defining innovative, and unseen knowledge from unstructured, semi-structured and structured textual data. This knowldege contributed to very important information that can derive from textual data. In this paper, text mining methods are applied to detect trends of terms that occur in the research articles and how they varies over time. We collected21,906 scientific papers from six top journals in the field of machine learning published in period 1988-2017 and analyzed them using text mining. Our result analysis shows a changing trend of various terms in Machine learning research in three decades. The analysis of our study helps the upcoming researchers to explore the significant research area of machine learning. © 2018 IEEE.

关键词： Machine learning

来源：评论

学校读者我要写书评

暂无评论

Leveraging polarity switches and domain ontologies for sentiment analysis in text 1

引用

1st International Conference on Computational Intelligence, Communications, and Business Analytics, CICBA 2017

作者： Sharma, Srishti Chakraverty, Shampa Jauhari, Anisha Department of Computer Engineering Netaji Subhas Institute of Technology New Delhi India

ISBN: (数字)9789811064272

ISBN: (纸本)9789811064265

This paper proposes an approach for Sentiment Analysis on online textual reviews that leverages polarity switches and domain ontologies to first perform Aspect Based Sentiment Analysis and uses it to then refine the overall sentiment scores. It segregates the review text into different fragments using sentiment polarity switching information. Then, it maps each of these fragments with the domain ontology to determine the aspect each fragment refers to and carries out corresponding Aspect Based Sentiment Analysis. Finally, the sentiments from all the aspects are clubbed together taking into account the hierarchical level of aspects in the domain ontology to refine the overall review polarity. Hontology was used to map the textual fragments to different aspects in the hotel domain like service, room, etc. Experiments carried out in the hotel domain on 800 hotel reviews extracted from Tripadvisor, Yelp, Expedia, Orbitz, *** and Priceline show that Aspect Based SA and domain ontologies together can indeed be used to refine SA. The macro level F1 score for the proposed approach is 3.96% higher than the baseline approach. © Springer Nature Singapore Pte Ltd 2017.

关键词： Sentiment analysis

来源：评论

学校读者我要写书评

暂无评论

NPSO Based Cost Optimization for Load Scheduling in Cloud Computing 1

引用

5th International Symposium on Security in Computing and Communications, SSCC 2017

作者： Chaudhary, Divya Kumar, Bijendra Khanna, Rahul Department of Computer Engineering Netaji Subhas Institute of Technology New Delhi India

ISBN: (数字)9789811068980

ISBN: (纸本)9789811068973

The main objective of virtual distributed computing is optimization of load in an efficient manner. This is achieved using load scheduling in cloud computing. The cloud is a virtual distributed environment having a huge set of resources. It offers us an incremental paradigm to obtain effective data transfer among the virtual machines and cloudlets. The paper proposes New Particle Search Optimization (NPSO) based load scheduling approach to obtain cost minimization by processing the cloudlets on VMs. It specifies a meta-heuristic swarm intelligence based approach by storing the best positions. The swarm of particles affects the behavior of the cloudlets. This is achieved using a new cost evaluation function. This paper analyzes the particle swarm optimization and NPSO (New Particle Search Optimization) on a large data set of cloudlets and VMs. The proposed approach provides higher efficiency by cost optimization (minimized cost) based on the statistical analysis of the total cost (execution and transfer) on a data set of number of iterations and particles. © 2017, Springer Nature Singapore Pte Ltd.

关键词： Swarm intelligence

来源：评论

学校读者我要写书评

暂无评论

Effect of varying spatial orientations on build time requirements for FDM process: A case study

引用

Defence technology（防务技术） 2017年第2期13卷 92-100页

作者： Sandeep Rathee Manu Srivastava Sachin Maheshwari Arshad Noor Siddiquee Division of Manufacturing Processes and Automation Engineering Netaji Subhas Institute of Technology Department of Mechanical Engineering Jamia Millia Islamia A Central University

In this research, effect of varying spatial orientations on the build time requirements for fused deposition modelling process is studied. Constructive solid geometry cylindrical primitive is taken as work piece and modeling is accomplished for it. Response surface methodology is used to design the experiments and obtain statistical models for build time requirements corresponding to different orientations of the given primitive in modeller build volume. Contour width, air gap, slice height, raster width, raster angle and angle of orientation are treated as process parameters. Percentage contribution of individual process parameter is found to change for build time corresponding to different spatial orientations. Also, the average of build time requirement changes with spatial orientation. This paper attempts to clearly discuss and describe the observations with an aim to develop a clear understanding of effect of spatial variations on the build time for Fused Deposition Modelling process. This work is an integral part of process layout optimization and these results can effectively aid designers specially while tackling nesting issues.

关键词： Fused deposition modeling Spatial orientation Process parameters Response Surface Methodology Build time

来源：评论

学校读者我要写书评

暂无评论

Opinion of computer Science Instructors and Students on MOOCs in an Indian University

引用

Journal of Educational technology Systems 2018年第2期47卷 205 - 212页

作者： Pushp Sra Pinaki Chakraborty School of Computer and Systems Sciences Jawaharlal Nehru University New Delhi India Division of Computer Engineering Netaji Subhas Institute of Technology New Delhi India

来源：评论

学校读者我要写书评

暂无评论

Optimal nonlinear system identification using fractional delay second-order volterra system

引用

IEEE/CAA Journal of Automatica Sinica 2018年

作者： Kumar, Manjeet Aggarwal, Apoorva Rawat, Tarun Parthasarathy, Harish Department of Electronics and Communication Engineering Division Netaji Subhas Institute of Technology New Delhi 110078 India India

The aim of this work is to design a fractional delay second order Volterra filter that takes a discrete time sequence as input and its output is as close as possible to the output of a given nonlinear unknown system which may have higher degree nonlinearities in the least square sense. The basic reason for such a design is that rather than including higher than second degree nonlinearities in the designed system, we use the fractional delay degrees of freedom to approximate the given system. The advantage is in terms of obtaining a better approximation of the given nonlinear system than is possible by using only integer delays ( since we are giving more degrees of freedom via the fractional delays ) and simultaneously it does not require to incorporate higher degree nonlinearities than two. This work hinges around the fact that if the input signal is a decimated version of another signal by a factor of M, then fractional delays can be regarded as delays by integers less than M. Using the well known formula for calculating the discrete time Fourier transform ( TFT ) of a decimated signal, we then arrive at an expression for the DTFT of the output of a fractional delay system in terms of the unknown first and second order Volterra system coefficients and the fractional delays. The final energy function to be minimized is the norm square of the difference between the DTFT of the given output and the DTFT of the output of the fractional delay system. Minimization over the filter coefficients is a linear problem and thus the final problem is to minimize a highly nonlinear function of the fractional delays which is accomplished using search techniques like the gradient-search and nature inspired optimization algorithms. The effectiveness of the proposed method is demonstrated using two nonlinear benchmark systems tested with five different input signals. The accuracy of the stated models using the globally convergent metaheuristic, cuckoo-search al

关键词： Linear systems

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：