The Penalized Matrix Decomposition Method of Extracting Core Characteristic Words——Taking Co-word Analysis as an Example
Yu Xianzi, Gao Yinglian, Ma Chunxia, Liu Jinxing
New Technology of Library and Information Service . 2014, (3): 88 -95 .  DOI: 10.11925/infotech.1003-3513.2014.03.13

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