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Research Interests
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Human Computer Interaction
Information Systems Adoption
Information Privacy |
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Selected Publications
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Wang, D., Xu, L., and Chan, H. C. (2008).
Understanding Users' Continuance of Facebook - The Role of General
and Specific Computer Self-Efficacy. Proceedings of the Twenty Ninth International Conference on Information Systems,
Paris, France.
Download.
Keywords: General computer self-efficacy, Specific computer self-efficacy,
Continuance intention, Social cognitive theory, Facebook, Cognition,
Affect
Abstract:
Prior research has distinguished general computer self-efficacy
(CSE) and application-specific computer self-efficacy, but few
studies have investigated the relationship between the two levels of
CSE as well as their antecedents and consequences. With the
increasing popularity of social networking sites such as Facebook,
we are interested in assessing the role of general and specific CSE
in predicting users' continuance intention of these sites. An
extended technology acceptance model with both cognitive and
affective predictors is utilized to capture the decision process of
Facebook users' continuance intention. The proposed research
model examined antecedents as well as consequences of both
general CSE and specific CSE in Facebook. A survey was conducted
for data collection. The results show that general CSE and specific
CSE are closely related but play different roles in predicting
continuance intention in Facebook through cognition and affect, and
are affected differently by general computer and Facebook-specific
experience.
Wang, D., and Poo, D. C. C. (2008).
Latent Semantic Analysis. Proceedings of the 13th National
Undergraduate Research Opportunities Programme Congress,
Singapore.
Keywords: Latent Semantic Analysis,
information retrieval, dimensionality reduction, singular
value decomposition
Abstract:
Latent semantic analysis (LSA) is a model of human
knowledge representation that approximates semantic relatedness
judgments. It is a fully automatic mathematical/statistical
technique for extracting and inferring relations of expected
contextual usage of words in passages of discourse. This
research reviews various literatures on latent semantic
analysis and establishes a framework that organizes the
existing literatures. It first goes through a brief history
of latent semantic analysis. Then the mathematical details
of LSA are presented, with an example followed. The paper
then reviews several applications of LSA and finally suggests
some improvements to LSA. These areas for improvement can
be taken for further research for LSA. |
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WANG Deliang |
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Teaching Assistant
BComp (Hons) (National University of Singapore)
Office: COM1-02-46
Tel: (65) 6516-4590
Fax: (65) 6779-4580
E-mail: [wangdl@nus.edu.sg]
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