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Collaborating Authors

 Abdullah, Nik Nailah Binti


Efficient Multiple Incremental Computation for Kernel Ridge Regression with Bayesian Uncertainty Modeling

arXiv.org Machine Learning

This study presents an efficient incremental/decremental approach for big streams based on Kernel Ridge Regression (KRR), a frequently used data analysis in cloud centers. To avoid reanalyzing the whole dataset whenever sensors receive new training data, typical incremental KRR used a single-instance mechanism for updating an existing system. However, this inevitably increased redundant computational time, not to mention applicability to big streams. To this end, the proposed mechanism supports incremental/decremental processing for both single and multiple samples (i.e., batch processing). A large scale of data can be divided into batches, processed by a machine, without sacrificing the accuracy. Moreover, incremental/decremental analyses in empirical and intrinsic space are also proposed in this study to handle different types of data either with a large number of samples or high feature dimensions, whereas typical methods focused only on one type. At the end of this study, we further the proposed mechanism to statistical Kernelized Bayesian Regression, so that uncertainty modeling with incremental/decremental computation becomes applicable. Experimental results showed that computational time was significantly reduced, better than the original nonincremental design and the typical single incremental method. Furthermore, the accuracy of the proposed method remained the same as the baselines. This implied that the system enhanced efficiency without sacrificing the accuracy. These findings proved that the proposed method was appropriate for variable streaming data analysis, thereby demonstrating the effectiveness of the proposed method.


Special Track on Cognition and Artificial Intelligence: Comparing Human Capability and Experience with Today’s Computer Models

AAAI Conferences

Cognitive psychology and artificial intelligence have provided valuable insights into the scope and limitations of understanding human thought and behavior. Advances in computer technology and tools are becoming more of a fixture in everyday life, and increasingly affecting how we think about artificial intelligence and cognition. This special track is motivated by these two fronts of research. First, we extend cognitive studies to include the social psychology of people's everyday life with technology, comparing human cognition and experience with today's computer models, and second, on this basis we seek appropriate applications using computer technology, and seek to improve computer models of cognition and AI programs. This approach might yield many new ideas for creating technology and tools that amplify the ability of people to think and work together (such as new approaches for building robots in real-world domains), as well as new psychological and social theories.


How Artefacts Influence the Construction of Communications and Contexts during Collaboration in an Agile Software Development Team

AAAI Conferences

We used a stimulus and response method in cognition to consider agents as situated in their specific (Binti Abdullah et al, 2010) to uncover correlation patterns context as it was realized that people are strongly affected of the physical artefact-communication during specific by, and possibly dependent on their environment contexts of communications. We found preliminary empirical (Susi & Ziemke, 2001). With this shift of focus, new interactive evidence that the physical artefacts influence the theories of cognition have emerged. These interactive communication process in a mutually constraining relationship theories such as situated cognition (Clancey, 1997), with the contexts. In which the context is made up and distributed cognition (Hutchins, 1999), are noted for of the teams' practice that includes how they collaborate, their emphasis on the relationship between cognition, and the physical setting, situations, and participation role.