کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
416832 | 681404 | 2013 | 10 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Analysis of presence-only data via semi-supervised learning approaches Analysis of presence-only data via semi-supervised learning approaches](/preview/png/416832.png)
Presence-only data occur in a classification, which consist of a sample of observations from the presence class and a large number of background observations with unknown presence/absence. Since absence data are generally unavailable, conventional semi-supervised learning approaches are no longer appropriate as they tend to degenerate and assign all observations to the presence class. In this article, we propose a generalized class balance constraint, which can be equipped with semi-supervised learning approaches to prevent them from degeneration. Furthermore, to circumvent the difficulty of model tuning with presence-only data, a selection criterion based on classification stability is developed, which measures the robustness of any given classification algorithm against the sampling randomness. The effectiveness of the proposed approach is demonstrated through a variety of simulated examples, along with an application to gene function prediction.
Journal: Computational Statistics & Data Analysis - Volume 59, March 2013, Pages 134–143