质量估计及其应用(Mass Estimation and Its Applications)
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质量估计及其应用(Mass Estimation and Its Applications)
吐槽
今天研究下这篇文章,这个文章和前面的IForest有着非常紧密的关系。先占个坑,中午2点前将这文章更完。然并卵,现在已经是第二天的上午了。。拖延症又犯了
数据质量(data mass)
什么是数据质量呢?数据质量是指一个区域内数据点的数目。假设数据集
相比数据密度,数据质量有以下三方面的优势:
1.数据质量计算量小,只是统计一个区域内数据的数量,而不像数据密度一样计算点和点之间的距离。
2.数据质量能够给出一个数据云中,每个数据点一个排序,这个排序能够反映数据点是靠近数据云中心还是边缘。
数据质量估计
这里只考虑一维数据的质量估计。
Level-1质量估计
假设一个数据序列
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