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Issue No. 10 - October (2010 vol. 22)
ISSN: 1041-4347
pp: 1345-1359
Sinno Jialin Pan , Hong Kong University of Science and Technology, Hong Kong
Qiang Yang , Hong Kong University of Science and Technology, Hong Kong
A major assumption in many machine learning and data mining algorithms is that the training and future data must be in the same feature space and have the same distribution. However, in many real-world applications, this assumption may not hold. For example, we sometimes have a classification task in one domain of interest, but we only have sufficient training data in another domain of interest, where the latter data may be in a different feature space or follow a different data distribution. In such cases, knowledge transfer, if done successfully, would greatly improve the performance of learning by avoiding much expensive data-labeling efforts. In recent years, transfer learning has emerged as a new learning framework to address this problem. This survey focuses on categorizing and reviewing the current progress on transfer learning for classification, regression, and clustering problems. In this survey, we discuss the relationship between transfer learning and other related machine learning techniques such as domain adaptation, multitask learning and sample selection bias, as well as covariate shift. We also explore some potential future issues in transfer learning research.
Transfer learning, survey, machine learning, data mining.

Q. Yang and S. J. Pan, "A Survey on Transfer Learning," in IEEE Transactions on Knowledge & Data Engineering, vol. 22, no. , pp. 1345-1359, 2009.
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