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While the domain of big data is anticipated to affect many aspects of human endeavour, there are numerous challenges in building big data applications among which is how to address big data characteristics in quality requirements. In this paper, we propose a novel, unified, approach for specifying big data characteristics (e.g., velocity of data arrival) in quality requirements (i.e., those requirements...
Conformance checking is a crucial challenge for modern inter-organizational business processes when critical security, privacy and workflow constraints must be satisfied to ensure the reliability of multi-party business procedures. Many of these constraints can be expressed in terms of causal dependencies, and verifying such dependencies can be fundamental to determine the correctness of transactions...
This paper focuses on designing an online feedback management system that collects data in the form of suggestions, ratings and comments, and applies machine learning capabilities to automatically extract relevant summaries of the suggestions posted in this automated suggestion system. We have analyzed two key requirements, anonymous feedback and credible feedback, to gain insight on the submitted...
In many research and business domains, there are efforts to develop systems that aggregate user data gathered by various data sources. This approach involves secondary sharing of user data and potentially benefits the user in terms of improved personalization and better experience. However, concerns regarding privacy arise when sharing user data with unknown third parties. These concerns can be alleviated...
While personal data privacy is threatened by online social networks, researchers are seeking for privacy protection tools and methods to assist online social network providers and users. In this paper, we aim to address this problem by investigating how to quantitatively evaluate the privacy risk, as a function of people's awareness of privacy risks as well as whether their friends can be trusted...
Trust is critical for the growth of e-commerce. For consumers with or without experience, this study examines the influencing factors on online initial trust and ongoing trust by conducting an empirical test involving 800 participants with structure equation modeling (SEM). The results suggest the effects of perceived information quality on initial trust is significant, but its effect on ongoing trust...
Credential systems play an important role in the trust building process between members of online communities like eBay, Slashdot, Epinions, etc. We assumed credentials to be either reputation- or policy-based to be presented to mediate trust between a trustor and trustee. Numerous credential systems have already been proposed and/or adopted for different environments and contexts, incorporating diverse...
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