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Microblog Dimensionality Reduction—A Deep Lear ning Approach

Microblog Dimensionality Reduction—A Deep Lear ning Approach

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Microblog Dimensionality Reduction—A Deep Lear ning Approach

Exploring potentially useful information from huge amount of textual data produced by microblogging services has attracted much attention in recent years. An important preprocessing step of microblog text mining is to convert natural language texts into proper numerical e presentations. Due to the short-length characteristics of microblog texts, using term frequency vectors to represent microblog texts will cause “sparse data” problem. Finding proper representations of microblog texts is a challenging issue. In this paper, we apply deep networks to map the high-dimensional representations of microblog texts to low-dimensional representations.To improve the result of dimensionality reduction, we take advantage of the semantic similarity derived from two types of microblog-specific information, namely the retweet relationship and hashtags. Two types of approaches, including modifying training da ta and modifying the training objective of deep networks, are proposed to make use of microblog-specific information. Experiment results show that the deep models perform better than traditional dimensionality reduction methods such as latent semantic analysis and latent Dirichlet allocation topic model, and the use of microblog-specific information can help to learn better representations


 


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  • Model: PROJ7568
  • 999 Units in Stock
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This product was added to our catalog on Monday 31 July, 2017.

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