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Virtual learning community give students more free and open environment for studying on the Internet. This research is based on constructive learning theory and virtual learning community, from design and speciality of virtual learning community, and the ways of browsing.
This paper proposes a novel algorithm to extract the informative blocks from web pages and filter the advertisement which has noting to do with the subject when people browse the Web page. In this pager, we use HTML parser to construct DOM tree and apply corresponding rules to construct a new tree (CST) which can easily help us to separate the ldquoprimary content blocksrdquo from the other blocks...
Duplicated web pages responded by search engines not only waste valuable storage, but also aggravate burdens of userspsila browse. Web page de-duplication can effectively improve the information retrieval. This paper proposes pretreatment of web pages to improve the effectiveness and efficiency of web page de-duplication based on feature code according to the principle of data clearing. This paper...
With the development and widely used of Internet and information technology, the Web has become one of the most important means to obtain information for people. According to the Web document classification and the theory of artificial neural network, a Web classification mining method based on wavelet neural network is presented in this paper. Moreover, we adopt a algorithm of reduce the number of...
Along with the development of internet, a lot of new data appears in the web every day. To construct a retrieval model to adapt the new data quickly and to retrieval the new documents accurately is becoming an important research topic. In this paper, we put forward a new retrieval model by incorporating the theory of transfer learning with Markov Network. Firstly, compare term spaces network of old...
Video annotation is very important for video management, such as video retrieval. Despite continuous efforts in inventing new annotation algorithms, the annotation performance is usually unsatisfactory, and the annotation vocabulary is still limited due to the use of a small scale training set. In this paper, a novel video annotation framework based on the video object is presented, named object-based...
This paper proposes a cooperation mechanism among seller agents and builds a model based on multi-agent system. In the model, a manger agent has been set to watch activities of other agents. It will encourage the cooperative sellers and punish the non-cooperative seller agents by adjust the sellerpsilas reputation in the repository. With this mechanism, a seller would complete the trade with the buyer...
According to the requirement of providing personalized service to users in e-learning systems and the problem of presenting the semantic relationships of users' interests in traditional user models, this paper discusses the representation and the construction of a personalized user model which represents individual userpsilas interests by semantic mining from userpsilas resource searching process...
Put forward a new information retrieval method based on the query specificity after analyzing the existing problems of information retrieval system. The experiments show that the system has better query performance. Avoid the similarity documents in the first few pages effectively, when the system return a larger set of query documents.
With the progress of water supply company reform, the enterprise's leaders eager to optimize the productivity by strengthening the information management in order to improve the competition ability, there is a problem of the difference between supply and sale in lots of water supply company. For this reason, this paper proposes a method: first building a data warehouse based on GIS, and next, making...
Web services composition refers to the process of composing several Web services to provide a new value-added service. It is an emerging paradigm for application integration within and across organizational boundaries. BPEL is presently the most prominent language to specify and execute business processes, using Web services as its technological basis. However, BPEL is an XML-based language and may...
In this paper, we propose a new method of affective cognitive of images. We use 9 pictures that constitute the famous psychologist Furnham's shape & color test as standard templates. In the HSV color space, we get a vector which has 72 dimensions by using part-division method on color character., and color characters are normalized, We measure the template image and other images the similarity...
Since digital implementation of repetitive controllers is simpler than analog in many industrial applications, some design criteria for a discrete-time repetitive controller to suppress periodic disturbances within a specified frequency range are presented. The small gain theorem is applied to perform the controller design for system stability. Upper and lower bounds of the discrete-time repetitive...
Considering servers being the core position in network, this paper introduces how to monitor servers through simple network management protocol (SNMP). We expand MIB resources by defining MIB objects to monitor the resources of sever, and use multi-threading technology to collect data and process them, which can improve the collection efficiency. The experimental results prove that it is a successful...
Considering that freeway mainline has not only high speed but also the ability to store large amount of vehicles, this research proposed a new approach for controlling both freeway on-ramp and mainline. Based on local ramp metering strategy ALINEA, this approach controls both on-ramp vehicles and mainline shoulder lane vehicles according to real-time traffic condition of the ramp and mainline so that...
The key technique for the design of a frequency divider is to find a function between the input and output. In general, the design process and circuit of a frequency divider is complicated, modification and transplantation for it is difficult. A creative design method of CAIFD (Controllable Arbitrary Integer Frequency Divider) is presented in this paper, which uses the VHDL (VHSIC Hardware Description...
Partial discharge (PD) gray intensity image is regarded as the research object in this paper, a new principle and method based on genetic programming is proposed to extract PD features aiming at PRPD mode, This article firstly introduces the PRPD mode and the method to get the three-dimensional spectrum and two-dimensional gray intensity image, then gray intensity images identification technology...
A model of the relationship between the structure of alcohols and their chromatographic retention index has been set by Randic branch index, but the error forecasted was big in many situations because of the complexity and nonlinearity of structure-activity relationship, and it has a high request to the sample selection. A model based on radial basis function (RBF) neural network for determining the...
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