gensim稀疏矩阵操作
gensim API地址: https://radimrehurek.com/gensim/apiref.html
# get VSM dictionary = corpora.Dictionary(data) # 将“编号”向量v转换成正常向量。v的形式:[(维度ID,维度值),(维度ID,维度值),(维度ID,维度值)...] m = matutils.corpus2dense(v, num_terms=len(dictionary.keys())) # 将矩阵还原成编号矩阵 x = matutils.dense2vec(m)