Low-Frequency Aware Unsupervised Detection of Dark Jargon Phrases on Social Platforms.
Limei HuangShanshan WangChanglin LiuXueyang CaoYadi HanShaolei LiuZhenxiang ChenPublished in: PRICAI (2) (2023)
Keyphrases
- low frequency
- high frequency
- frequency domain
- wavelet transform
- social networks
- wavelet analysis
- subband
- frequency band
- electromagnetic fields
- wavelet coefficients
- discrete wavelet transform
- high resolution
- low pass
- fusion rules
- spatial domain
- contourlet transform
- image quality
- fusion method
- original images
- high quality
- high frequency components
- feature selection