Word Clustering Using Graphical Lasso-Guided PCA for Trend Analysis of COVID-19.
Tsutomu ItoRyosuke HarakawaMasahiro IwahashiPublished in: GCCE (2021)
Keyphrases
- trend analysis
- topic detection
- k means
- principal components analysis
- principal component analysis
- clustering algorithm
- clustering method
- data analysis
- data mining
- dimensionality reduction
- co occurrence
- text classification
- unsupervised learning
- n gram
- cluster analysis
- document clustering
- feature extraction
- face recognition
- machine learning
- anomaly detection
- expert systems