Chih-Chau Ma 馬智釗

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NTU CSIE Machine Learning and Data Mining Group

Room 528, CSIE Building,

National Taiwan University,

Taipei, Taiwan, R.O.C.

b91902082@ntu.edu.tw

 

Advisor: Prof. Chih-Jen Lin


Research

Collaborative Filtering (2007/4~)

The Netflix Prize is a contest for improving the accuracy of prediction about the movie preferences of customers. More precisely, it wishes to predict the voting scores of movies given by customers. I joined the quest since April 2007. The main approach I use for this contest is Singular Value Decomposition (SVD), which aims to find the hidden features of movies and the preferences of customers for these features. In future work, I hope to combine SVD with other approaches, like the classification and distribution estimation techniques.

Image Thumbnailing (2007/5~) with Yi-Hsuan Yang

For browsing large amount of images or photos, image thumbnailing is an important technique about cropping the significant portions of images, in order to make thumbnails that give a good impression on image viewers. Automatic thumbnail cropping can be done via face detection and saliency analysis, and we propose an approach which uses the information from both of the two techniques. To support our approach, we also propose a hierarchical multi-view face detection algorithm to detecting various views of faces in images.


Publication


Education

Graduate student, Department of Computer Science and Information Engineering, National Taiwan University (2006/9~)

Bachelor of Science, Department of Computer Science and Information Engineering, National Taiwan University (2002/9~2006/6)