Revealing Persistent Structure of International Trade by Nonnegative Matrix Factorization.
Chikara MizokamiTakaaki OhnishiPublished in: COMPLEX NETWORKS (2017)
Keyphrases
- nonnegative matrix factorization
- international trade
- probabilistic latent semantic indexing
- negative matrix factorization
- matrix factorization
- data representation
- text mining
- spectral clustering
- signal processing
- text documents
- data sets
- dimensionality reduction
- information extraction
- relational databases
- image processing
- information systems
- information retrieval