Advanced Materials Research Vols. 271-273

Abstract: Multidimensional interactive teaching is to establish the dominant role of the students in the teaching and is devoted to build up a new relationship between teachers and students. Interactions between teachers and students, students and students, students and CAI software ( computers) can help to improve the effect of the teaching progress. This paper discusses the three types of interaction and offer four multidimensional interactive teaching mode. The application of the teaching method in the course of database system concepts is introduced.

Abstract: This paper addresses the problem of accurately classifying image categories without any human interaction. A shared parts latent topic model is presented to share mixture components between categories. Different categories share the similar parts which make the model more accurate. As the number of components is unknown and is to be inferred from the train set, the Dirichlet process is introduced into the model to provide a nonparametric prior for the number of mixture components within each category. Gaussian mixture model is adopted to present the object color feature and the Wishart distribution is applied to estimate the parameters of object shape feature. A number of classification experiments are used to verify the success of our model.

Abstract: in order to efficient and rapid training student mastery the all aspects application skills of software test, it was adopted project-driven teaching method to teach based on the characteristic of software test theory knowledge and operation requirements of job. This essay is main introduced that study and application of function testing teaching of software testing by project-driven teaching method. It is proved the method obtained good teaching results in fact teaching.

Abstract: To fully evaluation students’ knowledge ability and comprehensive quality, enhance the learning motivation of the students and improve students’ practical skills according to the different characteristics of computer courses, we apply the method of process assessment. We explore and practice on the basic flow of process assessment and implementation methods.

Abstract: The diverse development of mobile terminal equipment and wireless networks makes more people choose mobile Learning, and how to select the appropriate equipment environment to support learning activities has become confusion in research and practice of mobile learning. In this paper , The terminal equipment and network access of mobile learning system environment are collectively referred to as mobile learning system equipment environment, it will separated describe the classification and characteristics of different mobile terminals and wireless network in detail, build an universal mobile learning system equipment environment model, have specific instructions of common mobile learning equipment environment based on this model, and the choice of mobile learning system equipment environment of existed typical mobile learning application cases home and abroad are classified and summarized. Finally, it will prospect the development of the future of mobile learning equipment environment.

Abstract: The concept of educational software and the development process are inconsistent in the educational software engineering. Based on education domain knowledge, educational software can be divided into three types: educational network resources, learning platforms and teaching management information systems. And the process of educational software development can be described as Educational Software Unified Process Model. This paper proposes the Educational Software Unified Process Model with five stages mentioned above based on Waterfall model, and illustrates that its key processes for the requirement analysis phase is the use-case analysis and for the design phase is platform architecture, and describes a detailed analysis to the central role of document-driving in the Educational Software Unified Process Model. At last, the Educational Software Unified Process Model is strongly supported by some cases in our related projects development.

Abstract: Credit risk problem is an essential problem in financial management area. People usually employ personal credit scoring to avoid financial risk problem. Although many methods have been proposed for evaluating the personal credit scoring and obtained good effects, most of these methods were called single model types, which would be disturbed by model self-parameter, data noise and other external factors. In order to overcome the weakness of single model, we believe one of best ways is to construct an ensemble model. In this paper, we proposed a new style of ensemble model and employed two public credit datasets to certify the validity of our ensemble model. The experimental result shows that the ensemble SOM-SVM model can overcome the single model weakness and improve the accuracy of classification, which is good for constructing a better credit scoring system in future.

Abstract: The classifier, built from a highly-skewed class distribution data set, generally predicts an unknown sample as the majority class much more frequently than the minority class. This is due to the fact that the aim of classifier is designed to get the highest classification accuracy. We compare three classification methods dealing with the data sets in which class distribution is imbalanced and has non-uniform misclassification cost, namely cost-sensitive learning method whose misclassification cost is embedded in the algorithm, over-sampling method and under-sampling method. In this paper, we compare these three methods to determine which one will produce the best overall classification under any circumstance. We have the following conclusion: 1. Cost-sensitive learning is suitable for the classification of imbalanced dataset. It outperforms sampling methods overall, and is more stable than sampling methods except the condition that data set is quite small. 2. If the dataset is highly skewed or quite small, over-sampling methods may be better.

Abstract: Construction and application of courses based on multimedia web teaching environment have greatly promoted sharing of teaching information resources between internal institutions of higher education and interschool, also provided personalized learning environment to students and created necessary conditions to achieve wider interactive and cooperative learning. However, as a teaching method being in the emerging stage, multimedia web teaching also occurs various problems including weakening students’ learning enthusiasm and emotional communications between students and teachers, management of teaching database is weak, teachers’ dominance is weak and teaching philosophy is not conformable with it. Moreover, its application must experience a continuous developing and perfecting process.

Abstract: For application system based on single-chip microcomputer (SCM), software design becomes more and more difficult than hardware design. Most of the college students can scheme out hardware circuits, but seldom of them can write out high-quality code for comprehensive system. Thinking and methodology are the key factors deciding the code quality. This article analyzes current situation of programming teaching for SCM, then discusses the particularity of thinking and methodology for SCM programming. The teaching contents were reformed by introducing new thinking and methodology. The applications of new thoughts and methods were demonstrated by three examples: multi-petal structure, key-jitter elimination without time-consuming and programming method based on messages. The practice showed that the teaching reform expanded the students’ thinking and improved their capabilities to write high-quality programs.