Wu B.,South China Normal University |
Duan T.,Lanzhou University of Finance and Economics
Physica A: Statistical Mechanics and its Applications | Year: 2017
The price of gold future is affected by many factors, which include the fluctuation of gold price and the change of trading environment. Fractal analysis can help investors gain better understandings of the price fluctuation and make reasonable investment decisions in the gold future market. After analyzing gold future price from January 2th, 2014 to April 12th, 2016 at the Shanghai Futures Exchange (SFE) in China, the conclusion is drawn that the gold future market has sustainability in each trading day, with all Hurst indexes greater than 0.5. The changing features of Hurst index indicate the sustainability of gold future market is strengthened first and weakened then. As a complicatedly nonlinear system, the gold future market can be well reflected by Elman neural network, which is capable of memorizing previous prices and particularly suited for forecasting time series in comparison with other types of neural networks. After analyzing the price trend in the gold future market, the results show that the relative error between the actual value of gold future and the predictive value of Elman neural network is smaller. This model that has a better performance in data fitting and predication, can help investors analyze and foresee the price tendency in the gold future market. © 2017 Elsevier B.V.
Pan L.-X.,Lanzhou University of Finance and Economics |
Liu Y.-F.,Lanzhou University
Dynamical Systems | Year: 2013
The existence of a robust family of exponential attractors is established for the non-autonomous nonclassical diffusion equation with linear memory, while the nonlinearity is critical. © 2013 Copyright Taylor and Francis Group, LLC.
Peng H.,Lanzhou University of Finance and Economics
Proceedings - 2010 International Conference on Multimedia Communications, Mediacom 2010 | Year: 2010
Mining of association rules is an important research topic in web usage mining. The purpose of this paper is to research how to dig interesting association rules effectively from the Web logs after been preprocessed. Firstly, using the FP-growth algorithm for processing the web log records, obtaining a set of frequent access patterns, then using the combination of browse interestingness and site topology interestingness of association rules for web mining, discovering a new pattern to provide valuable data for the site construction. © 2010 IEEE.
Ma Y.,Lanzhou University of Finance and Economics
International Conference on Wavelet Analysis and Pattern Recognition | Year: 2011
An extension of local binary pattern, named Number Local binary pattern (NLBP), is presented for texture analysis. First, the method divides the patterns into uniform and non-uniform according to the uniform measure. Second, the non-uniform pattern is further divided into different groups based on the numbers of '1' bits and '0' bits. The experiment shows that NLBP achieves a good texture discrimination compared with the state of the art methods such as Uniform Local Binary Pattern (ULBP) and Extended Local Binary Pattern (ELBP). © 2011 IEEE.
Yang H.,Lanzhou University of Finance and Economics
Proceedings - 2010 2nd WRI World Congress on Software Engineering, WCSE 2010 | Year: 2010
It is critical to think of creating electronic medical record (EMR) templates for general utilization of EMR due to semi-structured features. Word processor is widely used for recording patient electronic information. However, the most weakness of these editors is that it is hard to extract medical data from text document. Also it is less flexible to present data in some other forms. This paper provides an effective solution to create EMR template and present medical data using word processor XML-Schema and XSL technologies. It has been approved that this is a practical approach to combine EMR import liberalization and structured organization using XML technology and popular word processor. © 2010 IEEE.
Zhang K.,Lanzhou University of Finance and Economics
Communications in Computer and Information Science | Year: 2012
The object-oriented unit testing based on the genetic algorithm is a white-box testing method under the guidance of the demand analysis in software system. Traditional unit testing is mainly analyze the internal logical structure of products, but the object-oriented unit testing is not only considering the internal logical structure, but also mainly analyze the various features of class in the development of object-oriented. The paper combined with the genetic algorithm of artificial intelligence to testing the object-oriented software, so as to explore the new methods and techniques to improve testing efficiency. © 2012 Springer-Verlag.
Liu Y.,Lanzhou University of Finance and Economics
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2013
As an applied discipline, tourism undergraduate education will be improved in practice teaching. With design for the tourism geographic information system, all students will participate in investigation, design, data collection, maintenance and management of the information system, which can undoubtedly improve employability of the students. In particular, in organization of data for the tourism information system, the participants will obtain comprehensive knowledge about tourism resources in the region to establish a complete database. As an applied discipline, tourism undergraduate education will be improved in practice teaching. With design for the tourism geographic information system, all students will participate in investigation, design, data collection, maintenance and management of the information system, which can undoubtedly improve employability of the students. In particular, in organization of data for the tourism information system, the participants will obtain comprehensive knowledge about tourism resources in the region to establish a complete database. © 2013 Springer-Verlag.
Hai-yang S.,Lanzhou University of Finance and Economics
Advance Journal of Food Science and Technology | Year: 2015
Water resource is the basic and necessary input in the process of production and various consumption patterns of products and goods causes cause different impacts on the water resource using. It is very important to analysis and measures those different influences, which is especially good for the sustainability of water resource, construction of sustainable consumption pattern and the implementation of Integrated Water Resource Management. In this text, the virtual water consumption of Gansu in 1992-2005 is taken as a case study to analysis the relationship between the consumption pattern and virtual water. Then, three replaceable patterns presumed to examine and measure the change of virtual water. Based the results of this study, the per capita virtual water have decreased 43% and the total virtual water 40% in 2005 (relative to 1992). The quantity of food consumption decreases and the milk increases evidently. The key issue to decline the virtual water is the per capita virtual water consumption taken as the "quality" aspect of the virtual water and the more vegetable less meat can save virtual water 9% utmost. © Maxwell Scientific Organization, 2015.
Zhang R.,Lanzhou University of Finance and Economics
2011 IEEE 3rd International Conference on Communication Software and Networks, ICCSN 2011 | Year: 2011
CPN as object-oriented modeling tools, it is combined with undeniable agreement and trust of the update strategy, which is given a safe and intuitive model. When the given task managers are not only based on the cost of implementing the tasks in the tender selection of contractors, but a combination of trust, the implementation of utility computing tasks, whereby the decision does the task assigned. In the communication process, the introduction of repudiation protocol is collected by the participating parties and the preservation of evidence. Task is completed, and the use of trust updates the policy. If any party objects, he can submit evidence to the arbitrator and the appeal. Arbiter of evidence is based on two sides to give rewards and punishments on the trust arbitration. Effectiveness through the implementation of trust and assign tasks denied that an agreement ensures the fairness of assessment. Colored Petri nets are through the analysis tool, and the model is obtained with the activity and industry. Repast simulation tools are using the number of different tasks under the model simulation, and the analysis that is obtained the model has certain safety and efficiency. © 2011 IEEE.
Yang H.,Lanzhou University of Finance and Economics
Advances in Intelligent and Soft Computing | Year: 2012
ISO25000 (SQuaRE) provides new series of international standards on software product quality measurement. This paper, based on ISO 25000 (SQuaRE) Software Quality Measurement Model, describes how to establish software quality assessment system, using Fuzzy measures to quantize Fuzzy characteristic (or sub-characteristic), and then apply Choquet integral for synthetically evaluation. An example is also provided to demonstrate how to use this approach. © 2012 Springer-Verlag GmbH.