Topic Detection with Danmaku: A Time-Sync Joint NMF Approach.

Qingchun Bai Qinmin Hu Faming Fang Liang He

Published in: DEXA (2) (2018)

Keyphrases

topic detection
document clustering
negative matrix factorization
hot topics
trend analysis
text classification
nonnegative matrix factorization
text data
clustering algorithm
document collections
principal component analysis
text documents
information retrieval
text mining
image representation
document level