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Mining Complex Data Types
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Web Data
Challenges encompass the dynamic nature of the web, heterogeneity of data, and scalability. Methods involve web scraping, structured data extraction, and web usage mining.
Image Data
Challenges pertain to high data volume, dimensionality, and the need for feature extraction. Methods include convolutional neural networks (CNNs), transfer learning, and image preprocessing techniques.
Time Series Data
Challenges include autocorrelation, seasonality, and non-stationarity of data. Methods involve autoregressive models, Fourier transforms, and deep learning techniques.
Text Data
Challenges include natural language ambiguity, context-dependency, and the high dimensionality of data. Methods encompass natural language processing (NLP) techniques, topic modeling, and sentiment analysis.
Audio Data
Challenges involve noise, variable data lengths, and the need for feature extraction. Methods include spectrograms, feature extraction (e.g., MFCC), and deep learning models like RNNs.
Graph Data
Challenges involve dealing with connections and the structure of data. Methods include graph analytics, community detection, and network analysis.
Video Data
Challenges are related to dealing with both spatial and temporal dimensions, large file sizes, and extracting meaningful features. Methods include frame extraction, 3D CNNs, and action recognition algorithms.
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