Conditional Random Fields: Probabilistic Models for Segmenting and Labeling Sequence Data
ICML '01 Proceedings of the Eighteenth International Conference on Machine Learning
Web usage mining: discovery and applications of usage patterns from Web data
ACM SIGKDD Explorations Newsletter
Error Correcting Output Coding-Based Conditional Random Fields for Web Page Prediction
WI-IAT '08 Proceedings of the 2008 IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology - Volume 01
Solving multiclass learning problems via error-correcting output codes
Journal of Artificial Intelligence Research
Web Access Latency Reduction Using CRF-Based Predictive Caching
WISM '09 Proceedings of the International Conference on Web Information Systems and Mining
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Web page prefetching has shown to provide reduction in Web access latency, but is highly dependent on the accuracy of the Web page prediction method. Conditional Random Fields (CRFs) with Error Correcting Output Coding (ECOC) have shown to provide highly accurate and efficient Web page prediction on large-size websites. However, the limited class information provided to the binary-label sub-CRFs in ECOC-CRFs will also lead to inferior accuracy when compared to the single multi-label CRFs. Although increasing the minimum Hamming distance of the ECOC matrix can help to improve the accuracy of ECOC-CRFs, it is still not an ideal method. In this paper, we introduce the grouped ECOC-CRFs that allow us to obtain a prediction accuracy closer to that of single multi-label CRFs by grouping the binary ECOC vectors. We show in our experiments that by using the grouping method, we can maintain the efficiency of the ECOC-CRFs while providing significant increase in Web page prediction accuracy over ECOC-CRFs.