@Inbook{Wu2014,
author="Wu, Jia
and Zhu, Xingquan
and Zhang, Chengqi
and Cai, Zhihua",
editor="Tseng, Vincent S.
and Ho, Tu Bao
and Zhou, Zhi-Hua
and Chen, Arbee L. P.
and Kao, Hung-Yu",
title="Multi-Instance Learning from Positive and Unlabeled Bags",
bookTitle="Advances in Knowledge Discovery and Data Mining: 18th Pacific-Asia Conference, PAKDD 2014, Tainan, Taiwan, May 13-16, 2014. Proceedings, Part I",
year="2014",
publisher="Springer International Publishing",
address="Cham",
pages="237--248",
abstract="Many methods exist to solve multi-instance learning by using different mechanisms, but all these methods require that both positive and negative bags are provided for learning. In reality, applications may only have positive samples to describe users' learning interests and remaining samples are unlabeled (which may be positive, negative, or irrelevant to the underlying learning task). In this paper, we formulate this problem as positive and unlabeled multi-instance learning (puMIL). The main challenge of puMIL is to accurately identify negative bags for training discriminative classification models. To solve the challenge, we assign a weight value to each bag, and use an Artificial Immune System based self-adaptive process to select most reliable negative bags in each iteration. For each bag, a most positive instance (for a positive bag) or a least negative instance (for an identified negative bag) is selected to form a positive margin pool (PMP). A weighted kernel function is used to calculate pairwise distances between instances in the PMP, with the distance matrix being used to learn a support vector machines classifier. A test bag is classified as positive if one or multiple instances inside the bag are classified as positive, and negative otherwise. Experiments on real-world data demonstrate the algorithm performance.",
isbn="978-3-319-06608-0",
doi="10.1007/978-3-319-06608-0_20",
url="https://doi.org/10.1007/978-3-319-06608-0_20"
}