非负PARAFAC2:一种灵活的耦合方法
Nonnegative PARAFAC2: a flexible coupling approach
摘要:
在张量分解方法中建模可变性是源分离的挑战之一。一个可能的解决办法,以说明从一个数据集到另一个,共同分析的变化,是诉诸PARAFAC2模式。然而,到目前为止,对具有可变性的模式施加约束是不可能的。在下面的手稿中,引入了PARAFAC2模型的松弛,允许对变化模式施加非负约束。一个算法来计算所提出的灵活PARAFAC2模型的推导,其性能进行了研究合成和化学计量学数据。
英文摘要:
Modeling variability in tensor decomposition methods is one of the challenges of source separation. One possible solution to account for variations from one data set to another, jointly analysed, is to resort to the PARAFAC2 model. However, so far imposing constraints on the mode with variability has not been possible. In the following manuscript, a relaxation of the PARAFAC2 model is introduced, that allows for imposing nonnegativity constraints on the varying mode. An algorithm to compute the proposed flexible PARAFAC2 model is derived, and its performance is studied on both synthetic and chemometrics data.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。