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Mining Complex Data Types

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Web Data

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Challenges encompass the dynamic nature of the web, heterogeneity of data, and scalability. Methods involve web scraping, structured data extraction, and web usage mining.

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Image Data

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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.

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Time Series Data

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Challenges include autocorrelation, seasonality, and non-stationarity of data. Methods involve autoregressive models, Fourier transforms, and deep learning techniques.

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Text Data

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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.

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Audio Data

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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.

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Graph Data

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Challenges involve dealing with connections and the structure of data. Methods include graph analytics, community detection, and network analysis.

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Video Data

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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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