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An Adaptive User Preferences Elicitation Scheme for Location Recommendation

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Chinese Journal of Electronics 2016年第5期25卷 943-949页

作者： WANG Fan meng xiangwu ZHANG Yujie Beijing Key Laboratory of Intelligent Telecommunications Software and Multimedia School of Computer Science Beijing University of Posts and Telecommunications

User preferences elicitation is a key issue of location recommendation. This paper proposes an adaptive user preferences elicitation scheme based on Collaborative filtering(CF) algorithm for location recommendation. In this scheme, user preferences are divided into user static preferences and user dynamic preferences. The former is estimated based on location category information and historical ratings. Meanwhile, the latter is evaluated based on geographical information and two-dimensional cloud model. The advantage of this method is that it not only considers the diversity of user preferences, but also can alleviate the data sparsity problem. In order to predict user preferences of new locations more precisely, the scheme integrates the similarity of user static preferences, user dynamic preferences and social ties into CF algorithm. Furthermore, the scheme is parallelized on the Hadoop platform for significant improvement in efficiency. Experimental results on Yelp dataset demonstrate the performance gains of the scheme.

关键词： Location recommendation Adaptive User static preferences User dynamic preferences

Optimizing Bloom Filter Settings for Multi-keyword Search in Kademlia-like DHT Peer-to-Peer Networks

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Chinese Journal of Electronics 2014年第2期23卷 388-393页

作者： MA Wenming ZHANG Yujie meng xiangwu School of Computer Science Beijing University of Posts and Telecommunications Beijing Key Laboratory of Intelligent Telecommunications Software and Multimedia

This paper has proposed a novel method to reduce the multi-keyword query traffic in Kademlia-like Peer-to-peer(P2P) networks by optimizing the Bloom filter settings. We build some models to estimate the communication cost, the union set size, and the loss rate of performing union and intersection operations. We implement a Kademlia-like system and generate a group of *** use one part of the datasets to obtain the functions how to compute the optimal parameters and use another part of datasets to verify our method. Each query can determine the optimal settings of Bloom filter with no extra configuration. Our simulation experimental results show that with optimal Bloom filters settings, we can greatly reduce the communication cost under an acceptable loss rate.

关键词： Peer-to-peer Bloom filter Multikeyword Kademlia Optimize

The Ascendant Green Literary Study： Ecocriticism

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Sino-US English Teaching 2006年第3期3卷 68-71页

作者： Xue Sun xiangwu meng Langfang Teachers＇ College

Ecocriticism is a literary critical theory rising in 1990s in Europe and America in a state of ecological degradation. As it is newly born, there are various opinions on it. This paper sets out to make a systematic ex... 详细信息

关键词： ecocriticism ecological holism ecological crisis ecological ethics ecosystem

Original State of Grotto Eaves of the Daxiang Mountain Grottoes of Gangu County

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Journal of Landscape Research 2015年第6期7卷 8-10页

作者： YE Minghui meng xiangwu Design and Art Academy Lanzhou University of Technology

Located in the east of Gansu Province, Gangu County in Tianshui City is the only way that people went to the Central Plains from the western regions in ancient times, and it's also an important node of the Grotto Culture Corridor of the Silk Road. Daxiang Mountain Giant Buddha Grottoes is the landmark of Gangu County. The giant Buddha statue stands among cliffs 200 meters high above the ground, and it is the second largest stone-base clay-sculpture Buddha in China. After going through thousands of years, the Giant Buddha Grottoes needs effective and scientific protection. This article was originated from the actual project—The Research on the Construction Technology of Wooden-structure Grotto Eaves in the Daxiang Mountain. This article f inished the rebuilding plan for the Buddha Grotto Eaves on the basis of analyzing historical documents, hole traces, morphological evolution and image demonstration.

关键词： Daxiang Mountain Grotto Grotto eaves Original state of the building

Study on Architectural Concept of Environmental Adaptability of Vernacular Dwellings in Guanzhong-Tianshui Area

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Journal of Landscape Research 2013年第4期5卷 15-17页

作者： meng xiangwu YE Minghui SHI Hongru School of Design Art Lanzhou University of Technology

Vernacular dwellings are organic products adaptive to local climate and other natural conditions. From the perspective of climatic and geographical features, this study analyzed spatial layouts, outer appearance, courtyard layout and material structure of vernacular dwellings in Guanzhong-Tianshui area, and refined the ecological concepts and technologies adaptive to local environment. Vernacular dwellings are expected to develop sustainably in the evolution of natural environment, and adapt to the development needs of local human settlements.

关键词： Guanzhong–Tianshui area Vernacular dwellings Architectural concepts

Historical Evolution of Vernacular Settlement in Tianshui City

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Journal of Landscape Research 2016年第2期8卷 45-48页

作者： meng xiangwu YE Minghui ZHOU Qi LUO Jing College of Architecture Xi'an University of Architecture and Technology School of Design Art Lanzhou University of Technology

Vernacular settlement is a sum of settlements that keep traditional landscapes in the process of urbanization, and its coverage coincides with that of urban community and rural settlement to some extent. It is a phenomenon of social development against the background of rapid urbanization. As a national famous historic and cultural city, Tianshui City should have had excellent traditional cultural genes as the driving force for its development, however, only fragments of some historic blocks have been left in the recent urbanization. This paper, on the basis of investigating the old urban district of Tianshui City, analyzing the historical phenomenon, summarized the root causes for the status quo of vernacular dwellings in the city, so as to raise the concerns on humanistic thought, and provide proper guidance for the sustainable development of vernacular settlement.

关键词： Vernacular settlement Historical evolution Tianshui City

Electrocardiogram changes during hematoma enlargement in intracerebral hemorrhage patients

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Neural Regeneration Research 2008年第9期3卷 1030-1033页

作者： Zhouping Tang Di Chen Xingyong Chen xiangwu meng Xuewei Xie Xiang Luo Suming Zhang Department of Neurology Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430030Hubei Province China

BACKGROUND： It has been reported that cerebrovascular disease causes changes in electrocardiogram results. OBJECTIVE： To investigate changes in electrocardiogram results in patients with intracerebral bematoma enlargement. DESIGN, TIME AND SETTING： The present case-retrospective analysis study was performed at the Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology from January 2005 to October 2006. PARTICIPANTS： A total of 225 intracerebral hemorrhage patients （142 males and 83 females） that were hospitalized at the Department of Neurology were enrolled the present study. The patient selection was in accordance with diagnostic criteria from the Fourth National Cerebrovascular Disease Congress of China in 1995, and diagnosis was confirmed using computed tomography. All patients underwent computed tomography twice within 24 hours following intracerebral hemorrhage, and were subjected to electrocardiogram examination after admission. METHODS： According to hematoma enlargement following intracerebral hemorrhage, all patients were divided into hematoma enlargement （n = 20） and non-hematoma enlargement （n = 205） groups. Because of the large patient number difference between the two groups, the hematoma enlargement group was matched with the non-hematoma enlargement group. Patients meeting these conditions were included in the non-hematoma enlargement group. Finally, 75 patients were included in the final analysis, 19 in the hematoma enlargement group and 56 in the non-hematoma enlargement group. Clinical data from the two groups were statistically analyzed. MAIN OUTCOME MEASURES： The incidence of electrocardiographic abnormalities between the hematoma enlargement and non-hematoma enlargement groups. RESULTS： In the hematoma enlargement group, 15 patients （79%） developed electrocardiographic abnormafities. In the non-hematoma enlargement group, 24 patients （43%） presented with electrocardiographic abnormalities.

关键词： brain-heart syndrome electrocardiogram hematoma enlargement intracerebral hemorrhage

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数字媒体交易服务中第三方监管系统的设计与实现

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高技术通讯 2010年第7期20卷 709-713页

作者：张玉洁孟祥武北京邮电大学计算机学院北京100876

针对数字内容的使用控制和数字媒体服务价值链中各参与方的合法权益保护问题,提出了一种监管模式,并基于该模式,设计和实现了数字媒体交易服务监管系统。该系统在对内容商、运营商以及终端用户的行为数据收集、整合、统计和分析的基础上... 详细信息

针对数字内容的使用控制和数字媒体服务价值链中各参与方的合法权益保护问题,提出了一种监管模式,并基于该模式,设计和实现了数字媒体交易服务监管系统。该系统在对内容商、运营商以及终端用户的行为数据收集、整合、统计和分析的基础上,实现了对内容发布、内容交易、内容分发以及内容消费过程的监管。实际系统的部署和试运行结果表明,该系统实现了对数字媒体交易服务过程的良好监管。

关键词：数字媒体交易服务版权保护监管模式监管系统

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遗传算法交换操作的遍历性

北京邮电大学学报 1999年第1期22卷 34-37页

作者：孟祥武张玉洁北京邮电大学计算机科学与技术学院

分析了遗传算法交换操作的特性，利用马尔可夫链证明了对于两个互补的二进制串，交换操作能够进行遍历搜索．这对基因操作策略设计有指导作用．

关键词：并行算法遗传算法交换操作过早收敛

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