Xiantao Chen

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Soft keyboard for Chinese pinyin input methods are rarely studied although it is one of the default methods on devices with touch screens. Via an analysis of the digraph frequency of the pinyin system, we discovered a unique characteristic of the pinyin system: only 10 Roman letters are needed for the subsequent characters in a pinyin syllable after the(More)
Personas are results from user studies and viewed as a design and a communication tool in user-centered design processes. There were many studies addressing how to create good personas but what types of personas and how personas could help in ideation processes were less discussed in past works. In this paper, we conducted a comparative study to explore(More)
Mobile services increasingly play important roles in everyday life Designing novel concepts for mobile service is facing several challenges in ideation methodology. This paper presents a mixed ideation approach that combines the improved brainstorming and in-situ role playing for exploring new mobile service concept. Based on the proposed ideation approach,(More)
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