... with robustness from noisy data (Ko and Seo, 2004). How can labeled training data be automatically created from unlabeled data and title words? Maybe unlabeled data don’t have any information ... 4 Using a Feature Projection Technique for Handling Noisy Data of Machine-labeled Data We finally obtained labeled data of a documents unit, machine-labeled data. Now we can learn text classifiers ... with a Clustering Technique In related works, we presented two approaches using unlabeled data in text categorization; one approach combines unlabeled data and labeled data, and the other approach...