Stability of topic modeling via matrix factorization

•The problem of the instability of standard topic modeling algorithms is investigated.•Three new stability measures for topic models are proposed.•Two new ensemble approaches for topic modeling with matrix factorization are proposed.•A detailed evaluation of these approaches is performed on 10 text...

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Veröffentlicht in:	Expert systems with applications 2018-01, Vol.91, p.159-169
Hauptverfasser:	Belford, Mark, Mac Namee, Brian, Greene, Derek
Format:	Artikel
Sprache:	eng
Schlagworte:	Clustering Factorization LDA Modelling NMF Optimization algorithms Probability Stability analysis Stochastic models Studies Topic modeling Topic stability Vector quantization
Online-Zugang:	Volltext
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