Spatial Semantic Scan: Detecting Subtle, Spatially Localized Events in Text Streams.

Published in: CoRR (2015)

Keyphrases

text streams
spatially localized
event detection
topic models
text mining
news articles
spatial information
multiresolution
text data
natural language
semantic information
information retrieval
temporal information
data representation
temporal patterns
nonnegative matrix factorization
tomographic reconstruction