The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper proposes an integrated nonlinearityexploration approach to discover the nonlinearitycharacteristic in clean energy stock market, integrating a set ofdata characteristics analysis technologies. In the proposedapproach, the stock data are first analysed in terms of Hurstexponent, a basic nonlinear exponent, from an overallperspective. Second, a series of nonlinear testing methods areemployed...
In order to validate a particular approach to trust modeling, researchers have typically designed simulations in which various multliagent conditions are modeled and tested. Graphs have tracked different measures to demonstrate success of the proposed trust model, including satisfaction of buying agents, profit of selling agents (in e-marketplaces) or the extent to which the simulation matched some...
An update algorithm of least squares support vector machine (LSSVM) is proposed to tackle the time-varying characteristics of the real industrial process. The process variations are concluded to two categories, and accordingly the samples adding and samples replacement are proposed to update the initial LSSVM model incrementally. Then the LSSVM model with proposed updating measures is applied in the...
The method of constructing testing impacts for digital devices is proposed. The method is based on the representation device as a set of models data exchange interfaces. This approach allows to build models of input impacts as a collection of standard operations inherent to the corresponding interface.
This paper presents the results of a comparative research of paper-based testing versus online testing using MudRi. The research was conducted on three courses at the Department of Informatics, University of Rijeka, and included 1231 tests. In observed courses, online tests have largely replaced traditional paper-based tests in the last few years. Therefore, the aim of this research was to determine...
The large majority of classical and modern estimation techniques assume the data seen at the testing phase of statistical inference come from the same process that generated the training data. In many real-world applications this can be a restrictive assumption. We outline two solutions to overcome this heterogeneity: instance-weighting and dimension reduction. The instance-weighting methods estimate...
The state of the art software product line testing methods attempted test derivation from product lines modeled as activity diagrams (ADs) with the test coverage goals of control flow and data flow. However, the existing methods applied widely different approaches to closely related problems with the consequence that the user of the methods cannot easily see the essence of product line test derivation...
Online reviews have been one of the important determinants to influence consumers' purchasing intention. This research builds a model to explore how online reviews influence consumers' purchasing intention. The empirical research results show that: Firstly, customers' perceived credibility of online reviews positively affects cognitive and emotional trust in online sellers, which results in purchasing...
Classification of low back disorders (LBDs) risks for common industrial lifting jobs is important to control and prevention of this common disability. Of particular interest to the researchers is the use of data mining methods in risk classification. This paper presents an adaptive neuro-fuzzy inference system (ANFIS) model for classifying LBDs risks. Though neuro-fuzzy inference modeling is extensively...
The effectiveness of mass vaccination and voluntary self-quarantine to mitigate pandemic influenza is tested in a large agent-based simulation. The characteristics of the pandemic — infectiousness, days contagious, and risk of death — are varied systematically along with the mitigation efforts in a five-factor designed experiment. A total of 243 distinct pandemic scenarios are tested. A range of two-way...
Based on the designing requirement of virtual car driving simultaion system, a collision detection algorithm based on the model projection point was proposed referring to Moore and Wilhelms' ideas of the virtual driving simulation system. The algorithm rationally distributes and minimizes the objects which are involved in calculation in different stages, decomposes the struction of scenes and re-organizes...
Dependence analysis on an Extended Finite State Machine (EFSM) representation of the requirements of a system under test has been used in requirements-based regression testing for regression test suite (RTS) reduction (reducing the size of a given test suite by eliminating redundancies), for RTS prioritization (ordering test cases in a given test suite for early fault detection) or for RTS selection...
Be it environmental data, public utility data, geo data, or some other data the open data approach is a way to open up the most important resource of the 21st century information and further develop our knowledge-based society. Innovation happens when data is open, available online, structured, and readable by man and machine.
In this study we explore the effects of cultural dimensions as influence factors of the Technology Acceptance Model (TAM) with the sample of academics in Indonesia. We adopted some Hofstede's cultural dimensions (power distance, individualism, and long term orientation) as influence factors to Perceive Usefulness and Perceive Ease of Use in TAM. Research carried out by using 308 respondents, who are...
This article introduces the main idea of decision-making behavior testing scenario management system. Based on the study of the classic experiments in theory of behavioral decision effect, testing scenarios are designed for testing decision-making behavior of business executives, and then a management system is developed to achieve dynamic management of testing scenarios. Behavioral decision theory...
Automatically creating test cases from statistical models of web application usage is an effective approach to generating test cases that represent actual usage. The models are typically generated from all collected user sessions. In this paper, we consider how grouping the user sessions -- specifically by the user's privilege -- creates different statistical models and the testing implications of...
Many industrial processes are nonlinear distributed parameter systems (DPS) that have significant spatio-temporal dynamics. Due to different production and working conditions, they often need to work at a large operating range with multiple working points. However, direct global modeling and persistently exciting experiment in a large working region are very costly in many cases. Complex spatio-temporal...
A typical approach utilized for automated test case generation is to create a model of the implementation under test. Extended Finite State Machine (EFSM) is among the most popular models for model-based testing. However, automated test case generation on EFSM models is still a challenge task as a result of the fact that an EFSM model may contain infeasible paths. In this article we present a novel...
Trend analysis was introduced on the development of test strategies and test methods, through the analysis of 2D-Forward Modeling System characteristics. Strengths, Weaknesses, Opportunities, Threats are listed here, through internal and external factors investigation of the test; the suitable testing strategies and testing methods of 2D-Forward Modeling System were made out, after the analyzing of...
This paper was to investigate the application of item response theory to specify an appropriate item response model for the equating of the mixed-format of multiple-choice items and open-ended items, since equating is the precondition of the development of an item bank for the Computer-Based College English Placement Test. It was shown that the equating approach based on common-item nonequivalent...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.