首页|Random Subspace Sampling for Classification with Missing Data
Random Subspace Sampling for Classification with Missing Data
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万方数据
维普
Many real-world datasets suffer from the unavoidable issue of missing values,and therefore classification with missing data has to be carefully handled since inadequate treatment of missing values will cause large errors.In this paper,we propose a random subspace sampling method,RSS,by sampling missing items from the corresponding feature histogram distributions in random subspaces,which is effective and efficient at different levels of missing data.Unlike most established approaches,RSS does not train on fixed imputed datasets.Instead,we design a dynamic training strate-gy where the filled values change dynamically by resampling during training.Moreover,thanks to the sampling strategy,we design an ensemble testing strategy where we combine the results of multiple runs of a single model,which is more effi-cient and resource-saving than previous ensemble methods.Finally,we combine these two strategies with the random sub-space method,which makes our estimations more robust and accurate.The effectiveness of the proposed RSS method is well validated by experimental studies.
万方数据
维普
