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Yogesh Sankarasubramaniam Krishnan Ramanathan Subhankar Ghosh 《Information processing & management》2014
Automatic text summarization has been an active field of research for many years. Several approaches have been proposed, ranging from simple position and word-frequency methods, to learning and graph based algorithms. The advent of human-generated knowledge bases like Wikipedia offer a further possibility in text summarization – they can be used to understand the input text in terms of salient concepts from the knowledge base. In this paper, we study a novel approach that leverages Wikipedia in conjunction with graph-based ranking. Our approach is to first construct a bipartite sentence–concept graph, and then rank the input sentences using iterative updates on this graph. We consider several models for the bipartite graph, and derive convergence properties under each model. Then, we take up personalized and query-focused summarization, where the sentence ranks additionally depend on user interests and queries, respectively. Finally, we present a Wikipedia-based multi-document summarization algorithm. An important feature of the proposed algorithms is that they enable real-time incremental summarization – users can first view an initial summary, and then request additional content if interested. We evaluate the performance of our proposed summarizer using the ROUGE metric, and the results show that leveraging Wikipedia can significantly improve summary quality. We also present results from a user study, which suggests that using incremental summarization can help in better understanding news articles. 相似文献
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Mahmud Akhter ShareefAuthor VitaeUma KumarAuthor Vitae Yogesh K. DwivediAuthor Vitae 《Government Information Quarterly》2011,28(1):17-35
This research has as its objective the discovery of the critical factors that enable citizens to adopt e-Government (e-Gov) at different stages of service maturity. To accomplish the objective, this research has explained the related concepts and theories and developed a research framework grounded on a strong theoretical and literature review background. The empirical study was conducted in Canada, which is a leader in providing mature e-Gov services. From our results, we have observed two ontological differences from the present literature in the adoption behavior of e-Gov where organizational and financial perspectives have distinct implications over parsimonious technology adoption behavior. First, technology adoption model (TAM), diffusion of innovation theory (DOI), and theory of planned behavior (TPB) cannot capture and specify the complete essence of e-Gov adoption behavior of citizens. Second, e-Gov adoption behavior also differs based on service maturity levels, i.e., when functional characteristics of organizational, technological, economical, and social perspectives of e-Gov differ. Our findings indicate the critical factors that enable citizens to adopt e-Gov at different stages of service maturity. Public administrators and policy-makers have potential implications from the findings of the adoption behavior of e-Gov at different maturity levels. 相似文献
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Yogesh M. Patel Sanidhya Jain Abhishek Kumar Singh Kedar Khare Sarita Ahlawat Supreet Singh Bahga 《Biomicrofluidics》2020,14(6)
We present design, characterization, and testing of an inexpensive, sheath-flow based microfluidic device for three-dimensional (3D) hydrodynamic focusing of cells in imaging flow cytometry. In contrast to other 3D sheathing devices, our device hydrodynamically focuses the cells in a single-file near the bottom wall of the microchannel that allows imaging cells with high magnification and low working distance objectives, without the need for small device dimensions. The relatively large dimensions of the microchannels enable easy fabrication using less-precise fabrication techniques, and the simplicity of the device design avoids the need for tedious alignment of various layers. We have characterized the performance of the device with 3D numerical simulations and validated these simulations with experiments of hydrodynamic focusing of a fluorescently dyed sample fluid. The simulations show that the width and the height of the 3D focused sample stream can be controlled independently by varying the heights of main and side channels of the device, and the flow rates of sample and sheath fluids. Based on simulations, we also provide useful guidelines for choosing the device dimensions and flow rates for focusing cells of a particular size. Thereafter, we demonstrate the applicability of our device for imaging a large number of RBCs using brightfield microscopy. We also discuss the choice of the region of interest and camera frame rate so as to image each cell individually in our device. The design of our microfluidic device makes it equally applicable for imaging cells of different sizes using various other imaging techniques such as phase-contrast and fluorescence microscopy. 相似文献
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Pillai K. R. Upadhyaya Pallavi Prakash Ashish Viswanath Ramaprasad Badrinarayan Srirangam Mukesh H. V. Pai Yogesh 《Education and Information Technologies》2021,26(4):3677-3698
Education and Information Technologies - The current study examines students’ coping process of a forced technological intervention in academic outcome assessment in a higher education... 相似文献
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Vishanth Weerakkody Ramzi El-Haddadeh Faris Al-Sobhi Mahmud Akhter Shareef Yogesh K. Dwivedi 《International Journal of Information Management》2013
The adoption and diffusion of electronic government is often impeded by many social and individual factors relating to citizens. In this respect, intermediaries have emerged as a new model for delivering e-government services to overcome such obstacles. This study aims to examine the role of intermediaries in facilitating e-government adoption and diffusion using a survey based empirical study of 502 participants in Madinah City in Saudi Arabia. An extended UTAUT model is used as the theoretical basis utilizing trust in the Internet and Intermediaries. The results of this study show that there are significant relationships among the factors that influence intention to use e-government, namely, performance expectancy, effort expectancy, and trust of intermediary. In addition, the findings show that there is a significant relationship between facilitating conditions and usage behavior proving that intermediaries can influence adoption of e-government services. 相似文献
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Yogesh Ambekar 《海外英语》2006,(4):8-9
Titanic,the name itself brings in front of us the picture of disaster of huge ship and sympathy for thousands of passengers on the Titanic who were drowned． The 1912 sinking of Titanic ship “泰坦尼克号”曾是20世纪最伟大的客轮,却在它的首次航行中沉入大海。 Titanic was one of the greatest ship built in twentieth 相似文献
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Sharon L. Mitchell Mahrin Kader Melinda Z. Haggerty Yogesh D. Bakhai Calvert G. Warren 《Journal of College Counseling》2013,16(1):49-63
The authors sought to identify college students at risk for experiencing a mental health crisis that warranted a psychiatric evaluation at a hospital and/or a psychiatric hospitalization. A retrospective chart review of college students evaluated at a comprehensive psychiatric emergency program during a 1‐year period was conducted. Demographic variables, mental health treatment history, diagnosis, and hospital discharge plans were found to predict those students likely to be hospitalized and those likely to have positive discharge outcomes. 相似文献
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Yogesh K. Dwivedi Kawaljeet Kaur Kapoor Michael D. Williams Janet Williams 《International Journal of Information Management》2013
Library operation and management requires the performance of a number of repetitive, painstaking, labour- and time-intensive activities. Hence, in order to increase efficiency and effectiveness, many libraries are moving towards automation of the majority of their activities. Libraries are deploying Radio Frequency Identification (RFID) technology as a substitute for barcode systems for item identification and tracking, and this ultimately enables the automation of the majority of their processes. It is apparent from the available literature that research on RFID-related issues is largely concentrated on technical, organizational and implementation aspects, and less attention has been paid to understanding the use and user-satisfaction aspects. Therefore, this article aims to understand factors affecting the use of RFID systems and user satisfaction in a library context by empirically testing relevant constructs from DeLone and McLean's IS Success Model. A questionnaire-based survey was employed to collect data from a total of 181 respondents, who were all active users of an RFID-based library system. The findings from this study suggest that factors like system quality, use and user satisfaction positively influence consumer attitudes towards RFID-enabled services. The concluding section outlines salient points and briefly describes the associated limitations of this research, along with suggestions for future research directions. 相似文献