Evaluating the choice of tags in CQA sites

Rohan Banerjee, Sailaja Rajanala, Manish Singh

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearch


Tags play a crucial role in CQA sites by facilitating organization, indexing and categorization of the entire post in a few words. The choice of tags determines the audience that is elicited upon to seek a response for any particular post. This could either lead to receiving an accurate response for the question or result in receiving no answers. The choice of tags, thus, directly determines the quality of the post as well as to a large extent the success of the CQA site itself. In this paper, we a present a novel approach to evaluate the choice of tags in any post. We perform tag network analysis to find relationship between tags. We then find the anomalous combination of tags by performing anomaly detection. We demonstrate the robustness of our approach by showing high AUC, in the range of 0.95 to 0.98, on four datasets from Stack Exchange, namely Ask Ubuntu, Server Fault, Super User and Software Engineering.

Original languageEnglish
Title of host publicationDatabase Systems for Advanced Applications - 24th International Conference, DASFAA 2019 Chiang Mai, Thailand, April 22–25, 2019 Proceedings, Part I
EditorsGuoliang Li, Jun Yang, Joao Gama, Juggapong Natwichai, Yongxin Tong
Place of PublicationCham Switzerland
PublisherSpringer-Verlag London Ltd.
Number of pages16
ISBN (Electronic)9783030185763
ISBN (Print)9783030185756
Publication statusPublished - 2019
Externally publishedYes
EventDatabase Systems for Advanced Applications 2019 - Chiang Mai, Thailand
Duration: 22 Apr 201925 Apr 2019
Conference number: 24th
https://link.springer.com/book/10.1007/978-3-030-18576-3 (Proceedings)

Publication series

NameLecture Notes in Computer Science
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


ConferenceDatabase Systems for Advanced Applications 2019
Abbreviated titleDASFAA 2019
CityChiang Mai
Internet address


  • Anomaly detection
  • CQA sites
  • Tag network

Cite this