Semantic Hashtag Relation Classification Using Co-occurrence Word Information

  • Sungwon Seo
  • Jong-Kook Kim
  • Sung-Il Kim
  • Jeewoo Kim
  • Joongheon Kim


Users using social networking service (SNS) may express their thoughts and feelings using simple hashtags. Hashtags are related to other hashtags and images that are used together in the user’s other posts. Understanding the meaning of personal hashtags can be a way to learn latent semantic expressions of personal words. Existing methods for learning and analyzing semantics such as Latent Semantic Analysis, Latent Dirichlet Allocation and Word Embedding need large-scale corpus to construct an elaborate model. Large-scale corpus usually consists of words that a lot of people already use. Thus, existing methods are able to catch the latent meaning of words used in general. However, it is difficult for these methods to find personal meanings of words that are used by a particular person. Because the number of words that a person use is usually very small compared to a large-scale corpus. Another reason for the difficulty is that existing methods use occurrence frequency or co-occurrence probability. Therefore, the importance or the frequency or the probability of personalized meaning may disappear because of this large difference in the number of words. In this research we focused on the classification of semantic words using a user’s hashtag data and the co-occurrence of these hashtags. The performance is evaluated and enhances previous work by 18% for Precision and more than 70% for Recall.


Hashtag Social networking service Semantics Information retrieval Personalized meaning Personal word vector 



This work was supported in part by the National Research Foundation of Korea under Grant Number 2014R1A1A2059527.


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Authors and Affiliations

  1. 1.School of Electrical EngineeringKorea UniversitySeoulSouth Korea
  2. 2.School of Computer Science and EngineeringChung-Ang UniversitySeoulSouth Korea

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