作者机构：
[Liao Shengbin; Zhu Xiaoliang] Huazhong Normal Univ, Natl Engn Ctr E Learning, Wuhan, Peoples R China.
会议名称：
3rd International Conference on Computational Intelligence and Industrial Application (PACIIA2010)
会议时间：
DEC 04-05, 2010
会议地点：
Wuhan, PEOPLES R CHINA
会议主办单位：
[Liao Shengbin;Zhu Xiaoliang] Huazhong Normal Univ, Natl Engn Ctr E Learning, Wuhan, Peoples R China.
会议论文集名称：
Communications in Computer and Information Science
关键词：
ad hoc wireless network;MAC;backoff algorithm;cross-layer;markov model
摘要：
The network architecture can be classified into two categories: a centralized network architecture and a decentralized network architecture. Ad hoc wireless networks have witnessed startling advances, which is a decentralized network architecture, due to the flexibility and freedom they offer. The survey is mainly concerned with mac layer in ad hoc wireless networks, the aim of which is to provide a comprehensive view of the role and details of the protocols that define and control access to the wireless channel, i.e., wireless media access control (MAC) protocols, and there are the inherent problems of the MAC protocols in shared wireless channel environments in ad hoc wireless networks and relevant solutions.
期刊：
International Conference on Management and Service Science, MASS 2011,2011年:1-3
通讯作者：
Li, X.(li.xiaojing880421@gmail.com)
作者机构：
[Li Xiaojing] Department of Electronics and Information Engineering, Huazhong University of Science and Technology, Wuhan, China;[Wu Di] National Engineering Research Center for E-Learning, Huazhong Normal University, Wuhan, China
会议名称：
International Conference on Management and Service Science(2011年第五届管理与服务科学国际会议 MASS 2011)
会议时间：
2011-08-12
会议地点：
武汉
会议论文集名称：
International Conference on Management and Service Science(2011年第五届管理与服务科学国际会议 MASS 2011)论文集
摘要：
Constructing virtual scenes is one of the important parts in the virtual experiment system. In this process, it's essential to define the standard of related data description, this paper mainly introduces what needs to be included in the standard, based on the whole system of virtual experiment. In the end, it introduces the application for testing the standard through the whole platform.
作者机构：
[周东波] National Engineering Research Center for E-Learning, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China;[杜志强; 朱庆; 张叶廷] State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, 129 Luoyu Road, Wuhan 430079, China
通讯机构：
National Engineering Research Center for E-Learning, Central China Normal University, 152 Luoyu Road, China
摘要：
Chinese word segmentation is a difficult and challenging job because Chinese has no white space to mark word boundaries. Its result largely depends on the quality of the segmentation dictionary. Many domain phrases are cut into single words for they are not contained in the general dictionary. This paper demonstrates a Chinese domain phrase identification algorithm based on atomic word formation. First, atomic word formation algorithm is used to extract candidate strings from corpus after pretreatment. These extracted strings are stored as the candidate domain phrase set. Second, a lot of strategies such as repeated substring screening, part of speech (POS) combination filtering, and prefix and suffix filtering and so on are used to filter the candidate domain phrases. Third, a domain phrase refining method is used to determine whether a string is a domain phrase or not by calculating the domain relevance of this string. Finally, sort all the identified strings and then export them to users. With the help of morphological rules, this method uses the combination of statistical information and rules instead of corpus machine learning. Experiments proved that this method can obtain better results than traditional n-gram methods.
